首页 > 最新文献

International Journal of Biomaterials最新文献

英文 中文
Bond Strength of Reinforced Autopolymerized Acrylic Resin to Denture Base Resin 增强自聚合丙烯酸树脂与义齿基托树脂的结合强度
IF 3.1 Q3 MATERIALS SCIENCE, BIOMATERIALS Pub Date : 2023-07-07 DOI: 10.1155/2023/8898843
N. Aimjirakul, Chavinee Apimanchindakul, B. Mahardawi, Pheeradej Na Nan, Suwit Wimonchit, N. Wongsirichat
The aim of this study was to analyze the effect of applying short E-glass fiber (SEG) and ultrahigh molecular weight polyethylene (UWPE) filler on the shear bond strength between the repaired surface of the rapid heat-cured and the reinforced autopolymerized acrylic resin. Fifty-six circular (15 × 3.3 mm2) rapid heat-cured resins were made and assigned equally to seven different groups. These were later bonded to fifty-six circular-reinforced autopolymerized acrylic resin specimens. Every test group included a control group, along with applying 1% and 2% SEG, 0.5% SEG/UWPE, 1% SEG/UWPE, and 1% and 2% UWPE. The universal testing machine was utilized to conduct the shear bond strength test. The repaired surface of these samples was assessed. Besides, the mode of failure was visualized under stereo microscope. The shear bond strength of all experimental groups was significantly higher than that of the control group. Group 3 with the addition of 1% SEG demonstrated the highest significance (12.86 MPa). The mode of failure for most of specimens was a mixed failure. Thus, it is indicated that enhancing the resin with 1% short E-glass fiber significantly improves the shear bond strength between repaired surface of the rapid heat-cured acrylic resin denture base and the reinforced autopolymerized acrylic resin.
本研究的目的是分析短E玻璃纤维(SEG)和超高分子量聚乙烯(UWPE)填料对快速热固化修复表面与增强型自聚合丙烯酸树脂之间剪切结合强度的影响。五十六通知(15 × 3.3 mm2)快速热固化树脂,并平均分配到七个不同的组。这些后来被结合到五十六个圆形增强的自聚合丙烯酸树脂样品上。每个测试组都包括一个对照组,同时应用1%和2%的SEG、0.5%的SEG/UWPE、1%的SEG/UWPE以及1%和2%UWPE。利用万能试验机进行了剪切粘结强度试验。对这些样品的修复表面进行了评估。此外,在立体显微镜下观察了故障模式。所有实验组的剪切结合强度均显著高于对照组。添加1%SEG的第3组表现出最高的显著性(12.86 MPa)。大多数试样的失效模式为混合失效。因此,用1%短E玻璃纤维增强树脂可以显著提高快速热固化丙烯酸树脂义齿基托修复表面与增强的自聚合丙烯酸树脂之间的剪切结合强度。
{"title":"Bond Strength of Reinforced Autopolymerized Acrylic Resin to Denture Base Resin","authors":"N. Aimjirakul, Chavinee Apimanchindakul, B. Mahardawi, Pheeradej Na Nan, Suwit Wimonchit, N. Wongsirichat","doi":"10.1155/2023/8898843","DOIUrl":"https://doi.org/10.1155/2023/8898843","url":null,"abstract":"The aim of this study was to analyze the effect of applying short E-glass fiber (SEG) and ultrahigh molecular weight polyethylene (UWPE) filler on the shear bond strength between the repaired surface of the rapid heat-cured and the reinforced autopolymerized acrylic resin. Fifty-six circular (15 × 3.3 mm2) rapid heat-cured resins were made and assigned equally to seven different groups. These were later bonded to fifty-six circular-reinforced autopolymerized acrylic resin specimens. Every test group included a control group, along with applying 1% and 2% SEG, 0.5% SEG/UWPE, 1% SEG/UWPE, and 1% and 2% UWPE. The universal testing machine was utilized to conduct the shear bond strength test. The repaired surface of these samples was assessed. Besides, the mode of failure was visualized under stereo microscope. The shear bond strength of all experimental groups was significantly higher than that of the control group. Group 3 with the addition of 1% SEG demonstrated the highest significance (12.86 MPa). The mode of failure for most of specimens was a mixed failure. Thus, it is indicated that enhancing the resin with 1% short E-glass fiber significantly improves the shear bond strength between repaired surface of the rapid heat-cured acrylic resin denture base and the reinforced autopolymerized acrylic resin.","PeriodicalId":13704,"journal":{"name":"International Journal of Biomaterials","volume":"1 1","pages":""},"PeriodicalIF":3.1,"publicationDate":"2023-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41693768","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A Novel Coating of Orthodontic Archwires with Chlorhexidine Hexametaphosphate Nanoparticles. 用六偏磷酸钠氯己定纳米粒子涂覆正畸弓丝的新方法
IF 3 Q3 MATERIALS SCIENCE, BIOMATERIALS Pub Date : 2023-03-15 eCollection Date: 2023-01-01 DOI: 10.1155/2023/9981603
Zahraa Mohammed Al-Fadhily, Mehdi Abdul-Hadi

Materials and methods: A solution of CHX-HMP nanoparticles with an overall concentration of 5 mM for both CHX and HMP was prepared, characterized (using atomic force microscope and Fourier transformation infrared spectroscopy), and used to coat orthodontic stainless steel (SSW) and NiTi archwires (NiTiW). The coated segments were characterized (using scanning electron microscopy SEM with energy dispersive X-ray spectrometry and field emission SEM) and subjected to the elusion assessment.

Results: After having their composition validated, the average size of the CHX-HMP NPs was assessed to be 51.21 nm, and the analysis revealed that the particles had both chlorine and phosphorus. After 30 minutes in the coating solution, NPs deposited on the surface of the SSW and NiTiW. A continuous release of soluble CHX in artificial saliva was detected from both SSW and NiTiW as long as the experiment lasted for 28 days without reaching a plateau. However, the release from coated NiTiW was significantly more than coated SSW at 7, 14, and 28 days. While at day 21, the release from coated SSW was slightly greater than that from the coated NiTiW.

Conclusion: Orthodontic stainless steel and NiTi archwires can be successfully coated with CHX-HMP NPs and give sustained release of CHX along the examined period.

材料和方法:制备 CHX-HMP 纳米粒子溶液(CHX 和 HMP 的总浓度均为 5 mM),对其进行表征(使用原子力显微镜和傅立叶变换红外光谱),并用于涂覆正畸不锈钢(SSW)和镍钛弓丝(NiTiW)。对涂覆的片段进行了表征(使用扫描电子显微镜、扫描电子显微镜与能量色散 X 射线光谱仪和场发射扫描电子显微镜),并进行了伸长率评估:经过成分验证,CHX-HMP NPs 的平均粒径为 51.21 nm,分析表明颗粒中含有氯和磷。在涂层溶液中浸泡 30 分钟后,NPs 沉积在 SSW 和 NiTiW 表面。只要实验持续 28 天,就能检测到 SSW 和 NiTiW 在人工唾液中持续释放可溶性 CHX,且没有达到平稳状态。然而,在 7、14 和 28 天时,涂层 NiTiW 的释放量明显高于涂层 SSW。而在第 21 天,涂层 SSW 的释放量略高于涂层 NiTiW:结论:正畸用不锈钢和镍钛弓丝可以成功包覆 CHX-HMP NPs,并在检查期间持续释放 CHX。
{"title":"A Novel Coating of Orthodontic Archwires with Chlorhexidine Hexametaphosphate Nanoparticles.","authors":"Zahraa Mohammed Al-Fadhily, Mehdi Abdul-Hadi","doi":"10.1155/2023/9981603","DOIUrl":"10.1155/2023/9981603","url":null,"abstract":"<p><strong>Materials and methods: </strong>A solution of CHX-HMP nanoparticles with an overall concentration of 5 mM for both CHX and HMP was prepared, characterized (using atomic force microscope and Fourier transformation infrared spectroscopy), and used to coat orthodontic stainless steel (SSW) and NiTi archwires (NiTiW). The coated segments were characterized (using scanning electron microscopy SEM with energy dispersive X-ray spectrometry and field emission SEM) and subjected to the elusion assessment.</p><p><strong>Results: </strong>After having their composition validated, the average size of the CHX-HMP NPs was assessed to be 51.21 nm, and the analysis revealed that the particles had both chlorine and phosphorus. After 30 minutes in the coating solution, NPs deposited on the surface of the SSW and NiTiW. A continuous release of soluble CHX in artificial saliva was detected from both SSW and NiTiW as long as the experiment lasted for 28 days without reaching a plateau. However, the release from coated NiTiW was significantly more than coated SSW at 7, 14, and 28 days. While at day 21, the release from coated SSW was slightly greater than that from the coated NiTiW.</p><p><strong>Conclusion: </strong>Orthodontic stainless steel and NiTi archwires can be successfully coated with CHX-HMP NPs and give sustained release of CHX along the examined period.</p>","PeriodicalId":13704,"journal":{"name":"International Journal of Biomaterials","volume":"2023 ","pages":"9981603"},"PeriodicalIF":3.0,"publicationDate":"2023-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10033215/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9197814","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Mathematical Modelling with the Exact Solution of Three Different Bioheat Conduction Models of a Skin Tissue Shocked by Thermoelectrical Effect. 热电效应冲击下皮肤组织三种不同生物热传导模型精确解的数学建模。
IF 3.1 Q3 MATERIALS SCIENCE, BIOMATERIALS Pub Date : 2023-01-01 DOI: 10.1155/2023/3863773
Eman A N Al-Lehaibi

This research deals with the temperature increment and responsiveness of skin tissue to a continuous flow of surface heat induced by a constant-voltage electrical current. The exact analytical solution for the dual-phase-lag (DPL) of bioheat transfer has been obtained. It is used to confine the variables to a limited domain to solve the governing equations. The transition temperature reactions have been measured and investigated. The figures provide a comparison of the Pennes, Tzou models, and Vernotte-Cattaneo models. The numerical results demonstrate the values of the voltage, resistance, electric shock time, and dual-phase-lag time parameters which have significant influences on the distributions of the dynamic and conductive temperature rise through the skin tissue.

本研究涉及皮肤组织对恒压电流引起的持续表面热流的温升和反应性。得到了生物传热双相滞后的精确解析解。它用于将变量限定在一个有限的域内,以求解控制方程。对转变温度反应进行了测量和研究。这些数字提供了Pennes模型、Tzou模型和vernotte - cataneo模型的比较。数值结果表明,电压、电阻值、触电时间和双相滞后时间等参数的取值对通过皮肤组织的动态温升和导电温升的分布有显著影响。
{"title":"Mathematical Modelling with the Exact Solution of Three Different Bioheat Conduction Models of a Skin Tissue Shocked by Thermoelectrical Effect.","authors":"Eman A N Al-Lehaibi","doi":"10.1155/2023/3863773","DOIUrl":"https://doi.org/10.1155/2023/3863773","url":null,"abstract":"<p><p>This research deals with the temperature increment and responsiveness of skin tissue to a continuous flow of surface heat induced by a constant-voltage electrical current. The exact analytical solution for the dual-phase-lag (DPL) of bioheat transfer has been obtained. It is used to confine the variables to a limited domain to solve the governing equations. The transition temperature reactions have been measured and investigated. The figures provide a comparison of the Pennes, Tzou models, and Vernotte-Cattaneo models. The numerical results demonstrate the values of the voltage, resistance, electric shock time, and dual-phase-lag time parameters which have significant influences on the distributions of the dynamic and conductive temperature rise through the skin tissue.</p>","PeriodicalId":13704,"journal":{"name":"International Journal of Biomaterials","volume":"2023 ","pages":"3863773"},"PeriodicalIF":3.1,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10365921/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9875176","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Whitening Effect of Juglans regia Dry Husk Extract on Primary and Permanent Teeth. 核桃干皮提取物对乳牙和恒牙的美白作用。
IF 3.1 Q3 MATERIALS SCIENCE, BIOMATERIALS Pub Date : 2023-01-01 DOI: 10.1155/2023/1037661
Ola Hameed Turki, Zainab Juma Jafar

Walnut is a common member of the family Juglandaceae. Recently, the evaluation of the phenolic content and antioxidant activity of the parts of walnut has received increased interest. Many reasons are responsible for teeth discolouration because teeth can absorb ingredients from tea, coffee, and food. Stains from these ingredients could stay in the porous enamel layer. Traditional whitening chemicals have some side effects, the most common of which is tooth sensitivity and mild or moderate gingival irritation. The aims of this comparative experimental study were to evaluate the whitening effect of Juglans regia dry husk extract and compare it with that of traditional prophylactic pumice. Forty human teeth were collected. Amongst these teeth, 20 were permanent, and the other 20 were primary. Each group was randomly divided into a study group (treated with dry husk extract) and a control group (treated with traditional pumice). Tooth colour was measured with Easy VitaShade Advanced 4.0, and the readings of lightness, chroma, and hue (a represents the green to red axis and b represents the blue to yellow axis) were documented for each tooth before and after polishing. A statistical analysis was performed using the Statistical Package for Social Science (version 22; Chicago, Illinois, USA). Data were analysed using Shapiro-Wilk, Wilcoxon sum rank, and Wilcoxon signed rank tests, and the level of significance was set to 0.05. A normality test was conducted using the Shapiro-Wilk test, and it showed that the colour variables were not normally distributed. With regard to tooth lightness, significant differences were observed in the primary and permanent teeth and Juglans regia exerted a much better whitening effect than pumice at p < 0.05. This study supports the use of Juglans regia dry husk extract in dentistry as a natural product with a whitening effect. It has utilisation potential in dentistry due to its beneficial properties and highly active components.

核桃是核桃科的常见成员。近年来,对核桃各部位酚类物质含量和抗氧化活性的研究日益受到人们的关注。牙齿变色的原因有很多,因为牙齿会吸收茶、咖啡和食物中的成分。这些成分造成的污渍可能会留在多孔的牙釉质层中。传统的美白化学物质有一些副作用,最常见的是牙齿敏感和轻度或中度的牙龈刺激。本实验旨在评价核桃干壳提取物的美白效果,并与传统的预防性浮石进行比较。收集了40颗人类牙齿。在这些牙齿中,20颗是恒牙,另外20颗是乳牙。每组随机分为研究组(用干壳提取物处理)和对照组(用传统浮石处理)。用Easy VitaShade Advanced 4.0测量牙齿颜色,并记录每颗牙齿抛光前后的亮度、色度和色调读数(a∗代表绿色到红色轴,b∗代表蓝色到黄色轴)。使用社会科学统计软件包(版本22;芝加哥,伊利诺伊州,美国)。采用Shapiro-Wilk、Wilcoxon和秩、Wilcoxon符号秩检验对数据进行分析,显著性水平设为0.05。使用夏皮罗-威尔克检验进行正态性检验,结果表明颜色变量不是正态分布。乳牙和恒牙的牙齿亮度差异有统计学意义,其中牙釉质的美白效果明显优于浮石,差异有统计学意义(p < 0.05)。本研究支持在牙科中使用核桃干壳提取物作为具有美白效果的天然产品。由于其有益特性和高活性成分,它在牙科方面具有利用潜力。
{"title":"Whitening Effect of <i>Juglans regia</i> Dry Husk Extract on Primary and Permanent Teeth.","authors":"Ola Hameed Turki,&nbsp;Zainab Juma Jafar","doi":"10.1155/2023/1037661","DOIUrl":"https://doi.org/10.1155/2023/1037661","url":null,"abstract":"<p><p>Walnut is a common member of the family <i>Juglandaceae</i>. Recently, the evaluation of the phenolic content and antioxidant activity of the parts of walnut has received increased interest. Many reasons are responsible for teeth discolouration because teeth can absorb ingredients from tea, coffee, and food. Stains from these ingredients could stay in the porous enamel layer. Traditional whitening chemicals have some side effects, the most common of which is tooth sensitivity and mild or moderate gingival irritation. The aims of this comparative experimental study were to evaluate the whitening effect of <i>Juglans regia</i> dry husk extract and compare it with that of traditional prophylactic pumice. Forty human teeth were collected. Amongst these teeth, 20 were permanent, and the other 20 were primary. Each group was randomly divided into a study group (treated with dry husk extract) and a control group (treated with traditional pumice). Tooth colour was measured with Easy VitaShade Advanced 4.0, and the readings of lightness, chroma, and hue (<i>a</i><sup><i>∗</i></sup> represents the green to red axis and <i>b</i><sup><i>∗</i></sup> represents the blue to yellow axis) were documented for each tooth before and after polishing. A statistical analysis was performed using the Statistical Package for Social Science (version 22; Chicago, Illinois, USA). Data were analysed using Shapiro-Wilk, Wilcoxon sum rank, and Wilcoxon signed rank tests, and the level of significance was set to 0.05. A normality test was conducted using the Shapiro-Wilk test, and it showed that the colour variables were not normally distributed. With regard to tooth lightness, significant differences were observed in the primary and permanent teeth and <i>Juglans regia</i> exerted a much better whitening effect than pumice at <i>p</i> < 0.05. This study supports the use of <i>Juglans regia</i> dry husk extract in dentistry as a natural product with a whitening effect. It has utilisation potential in dentistry due to its beneficial properties and highly active components.</p>","PeriodicalId":13704,"journal":{"name":"International Journal of Biomaterials","volume":"2023 ","pages":"1037661"},"PeriodicalIF":3.1,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10382244/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9912582","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Application of Chitosan-Based Hydrogel Obtained from Insects in Pine Planting. 昆虫壳聚糖基水凝胶在松木种植中的应用。
IF 3.1 Q3 MATERIALS SCIENCE, BIOMATERIALS Pub Date : 2023-01-01 DOI: 10.1155/2023/8175405
Yerlan Zhatkanbayev, Zhanna Zhatkanbayeva, Zhanar Iskakova, Ainagul Kolpek, Almas Serikov, Nazira Moldagulova, Gaziza Danlybayeva, Ainur Sarsenova, Sandugash Anuarbekova

Agrogels, a hydrogel applied in the soil that collects water during irrigation or rainfall and distributes moisture to plant roots during drought, are a solution to water shortage concerns. Extending the release of low molecular weight chemicals has the potential to minimise mineral fertiliser losses as well as water and soil pollution. Thus, the aim of the research is to obtain chitosan from insect chitin, to synthesize a hydrogel based on chitosan with included mineral and organic fertilisers, and to report on experiments with agrogels in the field. In this study, chitosan was obtained from the adult beetles Zophobas morio. IR spectroscopy was used to examine chitosan. The existence of absorption lines typical of primary amines was demonstrated. In one step, a technique for the manufacture of chitosan-based hydrogels containing embedded mineral fertilisers was established. Hydrogel has a swelling coefficient of 60 g/g. Agrogels were evaluated while planting spruce seedlings on "Semei Ormany" LLP experimental locations. The survival rate of seedlings was found to be 40% higher in the experimental group than in the control group.

水凝胶是一种应用于土壤中的水凝胶,在灌溉或降雨时收集水分,在干旱时将水分分配给植物根系,是解决水资源短缺问题的一种方法。延长低分子量化学品的释放有可能最大限度地减少矿物肥料的损失以及水和土壤污染。因此,本研究的目的是从昆虫甲壳素中提取壳聚糖,在壳聚糖的基础上合成含矿质和有机肥的水凝胶,并报道凝胶在田间的实验。本研究从成虫中提取壳聚糖。利用红外光谱对壳聚糖进行了表征。证实了伯胺的典型吸收谱线的存在。在第一步中,建立了一种以壳聚糖为基础的含有嵌入矿物肥料的水凝胶的制造技术。水凝胶的膨胀系数为60g /g。在“Semei Ormany”LLP实验地点种植云杉幼苗时,对凝胶进行了评价。结果表明,试验组幼苗成活率比对照组高40%。
{"title":"Application of Chitosan-Based Hydrogel Obtained from Insects in Pine Planting.","authors":"Yerlan Zhatkanbayev,&nbsp;Zhanna Zhatkanbayeva,&nbsp;Zhanar Iskakova,&nbsp;Ainagul Kolpek,&nbsp;Almas Serikov,&nbsp;Nazira Moldagulova,&nbsp;Gaziza Danlybayeva,&nbsp;Ainur Sarsenova,&nbsp;Sandugash Anuarbekova","doi":"10.1155/2023/8175405","DOIUrl":"https://doi.org/10.1155/2023/8175405","url":null,"abstract":"<p><p>Agrogels, a hydrogel applied in the soil that collects water during irrigation or rainfall and distributes moisture to plant roots during drought, are a solution to water shortage concerns. Extending the release of low molecular weight chemicals has the potential to minimise mineral fertiliser losses as well as water and soil pollution. Thus, the aim of the research is to obtain chitosan from insect chitin, to synthesize a hydrogel based on chitosan with included mineral and organic fertilisers, and to report on experiments with agrogels in the field. In this study, chitosan was obtained from the adult beetles <i>Zophobas morio</i>. IR spectroscopy was used to examine chitosan. The existence of absorption lines typical of primary amines was demonstrated. In one step, a technique for the manufacture of chitosan-based hydrogels containing embedded mineral fertilisers was established. Hydrogel has a swelling coefficient of 60 g/g. Agrogels were evaluated while planting spruce seedlings on \"Semei Ormany\" LLP experimental locations. The survival rate of seedlings was found to be 40% higher in the experimental group than in the control group.</p>","PeriodicalId":13704,"journal":{"name":"International Journal of Biomaterials","volume":"2023 ","pages":"8175405"},"PeriodicalIF":3.1,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10072961/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9640137","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Improving the Biological Properties of UHMWPE Biocomposite for Orthopedic Applications. 提高超高分子量聚乙烯生物复合材料在骨科领域的生物学性能。
IF 3.1 Q3 MATERIALS SCIENCE, BIOMATERIALS Pub Date : 2023-01-01 DOI: 10.1155/2023/4219841
Tamara R Kadhim, Jawad K Oleiwi, Qahtan A Hamad

Bone plates are essential for bone fracture healing because they modify the biomechanical microenvironment at the fracture site to provide the necessary mechanical fixation for fracture fragments. The objective of this study was to determine cell availability, antibacterial activity, and wettability through a contact angle test. However, biocomposites that involve UHMWPE reinforced with n-HA and n-TiO2 particles at different fractions (0, 1.5, 2.5, 3.5, and 4.5%) and 5% from carbon and Kevlar fibers were fabricated by hot pressing technique. In vitro studies revealed good cell viability on the surface of the hybrid biocomposite even after 72 hr. The UHMEPE nanocomposite reinforced with carbon showed better cell attachment for fibroblasts than other UHMWPE nanocomposite materials reinforced with Kevlar fiber. The results of the contact angle measurements indicated that the incorporation of nanoparticles and the fiber reinforcement increased the wettability due to the hydrophilic character of nanobiocomposite, and also (UHMWPE-4.5% wt. TiO2-CF) biocomposite was the best wettability (∼48% as compared to neat UHMWPE). Antibacterial experiments involving Gram-positive bacteria, Staphylococcus aureus, confirm excellent bactericidal property for (UHMWPE-4.5% wt. TiO2-CF) biocomposite. Thermal analysis of the produced nanocomposites revealed that they had higher melting and crystallinity temperatures than pure UHMWPE.

骨板对骨折愈合至关重要,因为它们可以改变骨折部位的生物力学微环境,为骨折碎片提供必要的机械固定。本研究的目的是通过接触角测试确定细胞可用性、抗菌活性和润湿性。然而,通过热压技术制备了由碳和凯夫拉尔纤维以不同分数(0、1.5、2.5、3.5和4.5%)和5%的n-HA和n-TiO2颗粒增强的超高分子量聚乙烯生物复合材料。体外研究表明,即使在72小时后,混合生物复合材料表面仍具有良好的细胞活力。碳增强UHMEPE纳米复合材料对成纤维细胞的附着性优于其他凯夫拉纤维增强UHMWPE纳米复合材料。接触角测量结果表明,纳米颗粒和纤维增强剂的掺入增加了纳米生物复合材料的亲水性,并且(UHMWPE-4.5% wt. TiO2-CF)生物复合材料的润湿性最好(与纯UHMWPE相比,润湿性为48%)。对革兰氏阳性菌金黄色葡萄球菌的抑菌实验证实(UHMWPE-4.5% wt. TiO2-CF)生物复合材料具有优异的杀菌性能。对制备的纳米复合材料的热分析表明,它们比纯超高分子量聚乙烯具有更高的熔融温度和结晶度。
{"title":"Improving the Biological Properties of UHMWPE Biocomposite for Orthopedic Applications.","authors":"Tamara R Kadhim,&nbsp;Jawad K Oleiwi,&nbsp;Qahtan A Hamad","doi":"10.1155/2023/4219841","DOIUrl":"https://doi.org/10.1155/2023/4219841","url":null,"abstract":"<p><p>Bone plates are essential for bone fracture healing because they modify the biomechanical microenvironment at the fracture site to provide the necessary mechanical fixation for fracture fragments. The objective of this study was to determine cell availability, antibacterial activity, and wettability through a contact angle test. However, biocomposites that involve UHMWPE reinforced with n-HA and n-TiO<sub>2</sub> particles at different fractions (0, 1.5, 2.5, 3.5, and 4.5%) and 5% from carbon and Kevlar fibers were fabricated by hot pressing technique. In vitro studies revealed good cell viability on the surface of the hybrid biocomposite even after 72 hr. The UHMEPE nanocomposite reinforced with carbon showed better cell attachment for fibroblasts than other UHMWPE nanocomposite materials reinforced with Kevlar fiber. The results of the contact angle measurements indicated that the incorporation of nanoparticles and the fiber reinforcement increased the wettability due to the hydrophilic character of nanobiocomposite, and also (UHMWPE-4.5% wt. TiO<sub>2</sub>-CF) biocomposite was the best wettability (∼48% as compared to neat UHMWPE). Antibacterial experiments involving Gram-positive bacteria, <i>Staphylococcus aureus,</i> confirm excellent bactericidal property for (UHMWPE-4.5% wt. TiO<sub>2</sub>-CF) biocomposite. Thermal analysis of the produced nanocomposites revealed that they had higher melting and crystallinity temperatures than pure UHMWPE.</p>","PeriodicalId":13704,"journal":{"name":"International Journal of Biomaterials","volume":"2023 ","pages":"4219841"},"PeriodicalIF":3.1,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9851776/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10581275","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Synthesis and Characterization of Hydrogel-Based Hyaluronic Acid-Chitosan-Allium sativum Extract for Intraperitoneal Antiadhesion Application. 水凝胶透明质酸-壳聚糖-葱提取物的合成与表征。
IF 3.1 Q3 MATERIALS SCIENCE, BIOMATERIALS Pub Date : 2023-01-01 DOI: 10.1155/2023/5172391
Prihartini Widiyanti, Yolanda Citra Ayu Priskawati

Peritoneal Adhesion is a severe case that frequently occurs in patients after laparotomy surgery. Adhesions are pathological attachment that usually appears between the omentum, intestine, and abdominal wall. Several barriers are made to prevent adhesions, including liquid barriers such as sodium hyaluronate and carboxymethyl cellulose (CMC) but are fast absorbed-time hydrogel. The solid barrier has weakness of difficulty in covering all parts of the wound surface. The study aims to synthesize degradable hydrogel from N,O-Carboxymethyl Chitosan (NOCC), Aldehyde-Hyaluronic Acid, and the addition of Allium sativum (garlic oil). The best sample with the concentration of A-HA/NOCC 30 : 10 g/ml was obtained. The composite hydrogel of NOCC/AHA/Allium sativum has susceptible antimicrobial properties. In vitro cytotoxicity assay showed that hydrogel is nontoxic. The degradation time is for two weeks. The in vivo evaluation in a mouse model with an abrasion defect side was done to identify the effectiveness of the NOCC/AHA/A. sativum as antiperitoneal adhesion. Seven days after surgery, the observation of adhesion was performed. Based on all assay results, it can be resumed that the NOCC/AHA/A. sativum hydrogel possibly acts as an innovation to prevent postoperative intraperitoneal adhesion.

腹膜粘连是剖腹手术后常见的严重并发症。粘连是通常出现在大网膜、肠和腹壁之间的病理性附着。有几种屏障可以防止粘连,包括液体屏障,如透明质酸钠和羧甲基纤维素(CMC),但它们是快速吸收的水凝胶。固体屏障的缺点是难以覆盖创面的所有部位。以N, o -羧甲基壳聚糖(NOCC)和醛透明质酸为原料,添加大蒜油合成可降解水凝胶。最佳样品为A-HA/NOCC浓度为30:10 g/ml。NOCC/AHA/Allium sativum复合水凝胶具有敏感的抗菌性能。体外细胞毒性试验表明,水凝胶无毒。降解时间为两周。在具有磨损缺陷侧的小鼠模型中进行了体内评价,以确定NOCC/AHA/ a的有效性。Sativum作为抗腹膜粘连。术后7 d观察粘连情况。根据所有检测结果,可以恢复NOCC/AHA/A。Sativum水凝胶可能是防止术后腹腔粘连的一种创新。
{"title":"Synthesis and Characterization of Hydrogel-Based Hyaluronic Acid-Chitosan-<i>Allium sativum</i> Extract for Intraperitoneal Antiadhesion Application.","authors":"Prihartini Widiyanti,&nbsp;Yolanda Citra Ayu Priskawati","doi":"10.1155/2023/5172391","DOIUrl":"https://doi.org/10.1155/2023/5172391","url":null,"abstract":"<p><p>Peritoneal Adhesion is a severe case that frequently occurs in patients after laparotomy surgery. Adhesions are pathological attachment that usually appears between the omentum, intestine, and abdominal wall. Several barriers are made to prevent adhesions, including liquid barriers such as sodium hyaluronate and carboxymethyl cellulose (CMC) but are fast absorbed-time hydrogel. The solid barrier has weakness of difficulty in covering all parts of the wound surface. The study aims to synthesize degradable hydrogel from N,O-Carboxymethyl Chitosan (NOCC), Aldehyde-Hyaluronic Acid, and the addition of <i>Allium sativum</i> (garlic oil). The best sample with the concentration of A-HA/NOCC 30 : 10 g/ml was obtained. The composite hydrogel of NOCC/AHA/<i>Allium sativum</i> has susceptible antimicrobial properties. <i>In vitro</i> cytotoxicity assay showed that hydrogel is nontoxic. The degradation time is for two weeks. The in vivo evaluation in a mouse model with an abrasion defect side was done to identify the effectiveness of the NOCC/AHA/<i>A. sativum</i> as antiperitoneal adhesion. Seven days after surgery, the observation of adhesion was performed. Based on all assay results, it can be resumed that the NOCC/AHA/<i>A. sativum</i> hydrogel possibly acts as an innovation to prevent postoperative intraperitoneal adhesion.</p>","PeriodicalId":13704,"journal":{"name":"International Journal of Biomaterials","volume":"2023 ","pages":"5172391"},"PeriodicalIF":3.1,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10005870/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9470551","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Characteristics of Bulletproof Vests Made from COPEFB Fiber: Implications on Mechanical, Electrical, and Physical Resistance. 由COPEFB纤维制成的防弹背心的特性:对机械、电气和物理阻力的影响。
IF 3.1 Q3 MATERIALS SCIENCE, BIOMATERIALS Pub Date : 2023-01-01 DOI: 10.1155/2023/9475956
Siti Nikmatin, Irmansyah Irmansyah, Endah Kinarya Palupi, Rofiqul Umam

This research aims to examine the characteristics of bulletproof vests from corncob oil palm empty fruit bunch (COPEFB) biocomposite, where mechanical, electrical, and physical resistance tests have been successfully conducted. The variations in the diameter of the twisted thread used to make the basic material for bulletproof vests include 1 mm, 3 mm, 6 mm, and 10 mm, which were tested for their mechanical, electrical, and physical properties. To identify which biocomposite is good at damping bullets, an impact and a firing test were carried out to determine the kinetic energy and the depth of the bullet, respectively. The results showed that the impact value improved with an increase in the diameter of the twisted yarn used. The largest and the lowest impact values were 1.157 kJ and 0.277 kJ on the epoxy sample with a twisted thread diameter of 10 mm and 1 mm, respectively. It was also discovered that the biocomposite samples made from 6 mm to 10 mm twisted threads were the best samples, impermeable to bullets. This was due to the excess natural fiber content which improved the flexibility and absorption of kinetic energy from the high rate of projectile bullets. According to the results of the firing test, some samples are translucent, while others cannot be penetrated by bullet projectiles. The projectile went inside, and the composite was damaged. All the high filler loading samples were translucent to bullets, while some of the low loading samples were translucent and impermeable to bullets. Based on these results, biocomposite samples made of 6 mm and 10 mm twisted yarn are the best samples that are impermeable to bullets.

本研究旨在研究玉米芯油棕空果串(COPEFB)生物复合材料防弹背心的特性,该材料已成功进行了机械、电气和物理阻力测试。用于制作防弹背心基本材料的螺纹直径的变化包括1毫米、3毫米、6毫米和10毫米,测试了它们的机械、电气和物理性能。为了确定哪种生物复合材料对子弹的阻尼效果更好,研究人员分别进行了撞击和射击试验,以确定子弹的动能和深度。结果表明,冲击值随着捻纱直径的增大而增大。当螺纹直径为10 mm和1 mm时,对环氧树脂试样的最大和最小冲击值分别为1.157 kJ和0.277 kJ。研究还发现,由6毫米至10毫米螺纹制成的生物复合材料样品是最好的样品,不被子弹穿透。这是由于过量的天然纤维含量提高了弹丸的柔韧性和高速率的动能吸收。根据射击试验的结果,一些样品是半透明的,而另一些则不能被子弹射穿。弹丸进入了内部,复合材料被破坏了。高装填量的样品对子弹都是半透明的,而部分低装填量的样品是半透明的,对子弹不透水。结果表明,6mm和10mm捻纱制成的生物复合材料样品具有较好的防子弹性能。
{"title":"Characteristics of Bulletproof Vests Made from COPEFB Fiber: Implications on Mechanical, Electrical, and Physical Resistance.","authors":"Siti Nikmatin,&nbsp;Irmansyah Irmansyah,&nbsp;Endah Kinarya Palupi,&nbsp;Rofiqul Umam","doi":"10.1155/2023/9475956","DOIUrl":"https://doi.org/10.1155/2023/9475956","url":null,"abstract":"<p><p>This research aims to examine the characteristics of bulletproof vests from corncob oil palm empty fruit bunch (COPEFB) biocomposite, where mechanical, electrical, and physical resistance tests have been successfully conducted. The variations in the diameter of the twisted thread used to make the basic material for bulletproof vests include 1 mm, 3 mm, 6 mm, and 10 mm, which were tested for their mechanical, electrical, and physical properties. To identify which biocomposite is good at damping bullets, an impact and a firing test were carried out to determine the kinetic energy and the depth of the bullet, respectively. The results showed that the impact value improved with an increase in the diameter of the twisted yarn used. The largest and the lowest impact values were 1.157 kJ and 0.277 kJ on the epoxy sample with a twisted thread diameter of 10 mm and 1 mm, respectively. It was also discovered that the biocomposite samples made from 6 mm to 10 mm twisted threads were the best samples, impermeable to bullets. This was due to the excess natural fiber content which improved the flexibility and absorption of kinetic energy from the high rate of projectile bullets. According to the results of the firing test, some samples are translucent, while others cannot be penetrated by bullet projectiles. The projectile went inside, and the composite was damaged. All the high filler loading samples were translucent to bullets, while some of the low loading samples were translucent and impermeable to bullets. Based on these results, biocomposite samples made of 6 mm and 10 mm twisted yarn are the best samples that are impermeable to bullets.</p>","PeriodicalId":13704,"journal":{"name":"International Journal of Biomaterials","volume":"2023 ","pages":"9475956"},"PeriodicalIF":3.1,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10247317/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9609829","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Comparison of Antimicrobial Activity against Porphyromonas gingivalis between Advanced Platelet-Rich Fibrin and Injectable Platelet-Rich Fibrin. 晚期富血小板纤维蛋白与可注射富血小板纤维蛋白对牙龈卟啉单胞菌抗菌活性的比较。
IF 3.1 Q3 MATERIALS SCIENCE, BIOMATERIALS Pub Date : 2023-01-01 DOI: 10.1155/2023/9194868
Thuy Anh Vu Pham

Platelet-rich fibrin (PRF) obtained via low-speed centrifugation has antimicrobial properties. This study was conducted to evaluate the effectiveness of advanced platelet-rich fibrin plus (A-PRF+) and injectable platelet-rich fibrin (I-PRF), obtained from patients with different periodontal states, against Porphyromonas gingivalis. A-PRF+ and I-PRF samples were obtained from venous blood of 60 subjects divided equally into three groups: periodontitis, gingivitis, and healthy gingiva groups. The antibacterial experiments evaluated biofilm inhibition, mature biofilm impact, and time-kill kinetics. The percent reduction in biofilm-growing and mature biofilm bacteria ranged from 39% to 49% and 3% to 7%, respectively. In the time-kill kinetics assay, PRF from the periodontitis group was more effective as an antimicrobial than that from the gingivitis and healthy gingiva group (p < 0.001); I-PRF was more effective than A-PRF+ (p < 0.05) and both of them showed peak antibacterial activity after 12 h of exposure. Both A-PRF+ and I-PRF exhibited antibacterial properties against P. gingivalis, but I-PRF appeared to be more effective. The PRF obtained from the different groups appeared to have different degrees of antimicrobial efficacy.

通过低速离心获得的富血小板纤维蛋白(PRF)具有抗菌特性。本研究旨在评估晚期富血小板纤维蛋白+ (A-PRF+)和可注射富血小板纤维蛋白(I-PRF)对不同牙周状态患者牙龈卟啉单胞菌的治疗效果。从60名受试者的静脉血中采集A-PRF+和I-PRF样本,将其平均分为牙周炎组、牙龈炎组和健康牙龈组。抗菌实验评估了生物膜的抑制作用、成熟生物膜的影响和时间杀伤动力学。生物膜生长细菌和成熟生物膜细菌减少的百分比分别为39% ~ 49%和3% ~ 7%。在时间杀伤动力学试验中,牙周炎组的PRF抗菌效果优于牙龈炎组和健康牙龈组(p < 0.001);I-PRF的抑菌活性高于A-PRF+ (p < 0.05),且均在12 h后达到抑菌活性峰值。A-PRF+和I-PRF均表现出对牙龈假单胞菌的抑菌作用,但I-PRF似乎更有效。从不同组获得的PRF具有不同程度的抗菌功效。
{"title":"Comparison of Antimicrobial Activity against <i>Porphyromonas gingivalis</i> between Advanced Platelet-Rich Fibrin and Injectable Platelet-Rich Fibrin.","authors":"Thuy Anh Vu Pham","doi":"10.1155/2023/9194868","DOIUrl":"https://doi.org/10.1155/2023/9194868","url":null,"abstract":"<p><p>Platelet-rich fibrin (PRF) obtained via low-speed centrifugation has antimicrobial properties. This study was conducted to evaluate the effectiveness of advanced platelet-rich fibrin plus (A-PRF+) and injectable platelet-rich fibrin (I-PRF), obtained from patients with different periodontal states, against <i>Porphyromonas gingivalis</i>. A-PRF+ and I-PRF samples were obtained from venous blood of 60 subjects divided equally into three groups: periodontitis, gingivitis, and healthy gingiva groups. The antibacterial experiments evaluated biofilm inhibition, mature biofilm impact, and time-kill kinetics. The percent reduction in biofilm-growing and mature biofilm bacteria ranged from 39% to 49% and 3% to 7%, respectively. In the time-kill kinetics assay, PRF from the periodontitis group was more effective as an antimicrobial than that from the gingivitis and healthy gingiva group (<i>p</i> < 0.001); I-PRF was more effective than A-PRF+ (<i>p</i> < 0.05) and both of them showed peak antibacterial activity after 12 h of exposure. Both A-PRF+ and I-PRF exhibited antibacterial properties against <i>P. gingivalis</i>, but I-PRF appeared to be more effective. The PRF obtained from the different groups appeared to have different degrees of antimicrobial efficacy.</p>","PeriodicalId":13704,"journal":{"name":"International Journal of Biomaterials","volume":"2023 ","pages":"9194868"},"PeriodicalIF":3.1,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10070028/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9626501","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
High-Yield Alpha-Cellulose from Oil Palm Empty Fruit Bunches by Optimizing Thermochemical Delignification Processes for Use as Microcrystalline Cellulose. 优化热化学脱木质素工艺制备油棕空果串高产α -纤维素微晶纤维素
IF 3.1 Q3 MATERIALS SCIENCE, BIOMATERIALS Pub Date : 2023-01-01 DOI: 10.1155/2023/9169431
Susi Susi, Makhmudun Ainuri, Wagiman Wagiman, Mohammad Affan Fajar Falah

Oil palm empty fruit bunches (OPEFB) are lignocellulosic materials that are a by-product of the palm oil industry, which have less use and utilization is still limited. OPEFB's high cellulose content could potentially develop into various bioproducts, especially biomaterials. The thermochemical delignification process can obtain high-yieldalpha-cellulose. The cellulose extraction process can be done by combining the bleaching process under acidic conditions and alkaline delignification to obtain high-purity cellulose. The bleaching conditions vary in the concentration of NaClO2, the length of bleaching, the temperature, and the number of stages. The research obtains high α-cellulose by optimizing bleaching conditions under acidic conditions in cellulose's OPEFB extraction with variability on NaClO2 concentration and bleaching time using response surface methodology (RSM). The bleaching process was implemented at an early stage with a concentration of 3% NaClO2 and a bleaching time of 2 hours as a center point with a bleaching cycle of twice at pH 4-4.5 using acetic acid. Bleached fibers were delignified using 10% NaOH for 2 hours at room temperature. The RSM analysis resulted in optimum bleaching conditions at a concentration of 3.22% NaClO2 for 1 hour, yielding OPEFB's cellulose of 82.96% ± 2.53, hemicellulose of 9.27% ± 2.28, and lignin of 1.68% ± 0.58. The validation and verification process in the bleaching conditions obtained cellulose of 84.87% and α-cellulose of 88.51%, with a crystallinity index of 70.55% and crystallite size of 2.35 nm. Scanning electron microscopy on surface cellulose morphology at optimum bleaching helped remove hemicellulose impurities, lignin, and inorganic materials and a more intensive opening of cellulose fibrils. The bleaching process optimization point was verified to improve the delignification performance and potentially produce high yield α-cellulose content for microcrystalline cellulose use.

油棕空果束(OPEFB)是一种木质纤维素材料,是棕榈油工业的副产品,使用较少,利用率仍然有限。OPEFB纤维素含量高,具有开发各种生物制品,特别是生物材料的潜力。热化学脱木质素过程可以获得高产的纤维素。纤维素提取工艺可将酸性条件下的漂白工艺与碱性脱木质素工艺相结合,得到高纯度的纤维素。漂白条件随NaClO2浓度、漂白时间、温度和阶段数的变化而变化。采用响应面法(response surface methodology, RSM),在nacl浓度和漂白时间变化的条件下,对酸性条件下OPEFB提取纤维素的漂白条件进行优化,得到高α-纤维素。在pH为4-4.5的条件下,以醋酸为原料,以氯化钠浓度为3%,漂白时间为2小时为中心,漂白周期2次。漂白后的纤维在室温下用10% NaOH脱色2小时。RSM分析结果表明,在nacl浓度为3.22%的条件下漂白1小时,OPEFB的纤维素含量为82.96%±2.53,半纤维素含量为9.27%±2.28,木质素含量为1.68%±0.58。在漂白条件下的验证工艺得到纤维素含量为84.87%,α-纤维素含量为88.51%,结晶度指数为70.55%,晶粒尺寸为2.35 nm。在最佳漂白条件下,纤维素表面形貌的扫描电子显微镜有助于去除半纤维素杂质、木质素和无机物质,并使纤维素纤维更密集地开放。验证了漂白工艺优化点,提高了脱木质素性能,有可能生产出高收率α-纤维素含量的微晶纤维素。
{"title":"High-Yield Alpha-Cellulose from Oil Palm Empty Fruit Bunches by Optimizing Thermochemical Delignification Processes for Use as Microcrystalline Cellulose.","authors":"Susi Susi,&nbsp;Makhmudun Ainuri,&nbsp;Wagiman Wagiman,&nbsp;Mohammad Affan Fajar Falah","doi":"10.1155/2023/9169431","DOIUrl":"https://doi.org/10.1155/2023/9169431","url":null,"abstract":"<p><p>Oil palm empty fruit bunches (OPEFB) are lignocellulosic materials that are a by-product of the palm oil industry, which have less use and utilization is still limited. OPEFB's high cellulose content could potentially develop into various bioproducts, especially biomaterials. The thermochemical delignification process can obtain high-yieldalpha-cellulose. The cellulose extraction process can be done by combining the bleaching process under acidic conditions and alkaline delignification to obtain high-purity cellulose. The bleaching conditions vary in the concentration of NaClO<sub>2</sub>, the length of bleaching, the temperature, and the number of stages. The research obtains high <i>α</i>-cellulose by optimizing bleaching conditions under acidic conditions in cellulose's OPEFB extraction with variability on NaClO<sub>2</sub> concentration and bleaching time using response surface methodology (RSM). The bleaching process was implemented at an early stage with a concentration of 3% NaClO<sub>2</sub> and a bleaching time of 2 hours as a center point with a bleaching cycle of twice at pH 4-4.5 using acetic acid. Bleached fibers were delignified using 10% NaOH for 2 hours at room temperature. The RSM analysis resulted in optimum bleaching conditions at a concentration of 3.22% NaClO<sub>2</sub> for 1 hour, yielding OPEFB's cellulose of 82.96% ± 2.53, hemicellulose of 9.27% ± 2.28, and lignin of 1.68% ± 0.58. The validation and verification process in the bleaching conditions obtained cellulose of 84.87% and <i>α</i>-cellulose of 88.51%, with a crystallinity index of 70.55% and crystallite size of 2.35 nm. Scanning electron microscopy on surface cellulose morphology at optimum bleaching helped remove hemicellulose impurities, lignin, and inorganic materials and a more intensive opening of cellulose fibrils. The bleaching process optimization point was verified to improve the delignification performance and potentially produce high yield <i>α</i>-cellulose content for microcrystalline cellulose use.</p>","PeriodicalId":13704,"journal":{"name":"International Journal of Biomaterials","volume":"2023 ","pages":"9169431"},"PeriodicalIF":3.1,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9950327/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10849738","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
期刊
International Journal of Biomaterials
全部 Acc. Chem. Res. ACS Applied Bio Materials ACS Appl. Electron. Mater. ACS Appl. Energy Mater. ACS Appl. Mater. Interfaces ACS Appl. Nano Mater. ACS Appl. Polym. Mater. ACS BIOMATER-SCI ENG ACS Catal. ACS Cent. Sci. ACS Chem. Biol. ACS Chemical Health & Safety ACS Chem. Neurosci. ACS Comb. Sci. ACS Earth Space Chem. ACS Energy Lett. ACS Infect. Dis. ACS Macro Lett. ACS Mater. Lett. ACS Med. Chem. Lett. ACS Nano ACS Omega ACS Photonics ACS Sens. ACS Sustainable Chem. Eng. ACS Synth. Biol. Anal. Chem. BIOCHEMISTRY-US Bioconjugate Chem. BIOMACROMOLECULES Chem. Res. Toxicol. Chem. Rev. Chem. Mater. CRYST GROWTH DES ENERG FUEL Environ. Sci. Technol. Environ. Sci. Technol. Lett. Eur. J. Inorg. Chem. IND ENG CHEM RES Inorg. Chem. J. Agric. Food. Chem. J. Chem. Eng. Data J. Chem. Educ. J. Chem. Inf. Model. J. Chem. Theory Comput. J. Med. Chem. J. Nat. Prod. J PROTEOME RES J. Am. Chem. Soc. LANGMUIR MACROMOLECULES Mol. Pharmaceutics Nano Lett. Org. Lett. ORG PROCESS RES DEV ORGANOMETALLICS J. Org. Chem. J. Phys. Chem. J. Phys. Chem. A J. Phys. Chem. B J. Phys. Chem. C J. Phys. Chem. Lett. Analyst Anal. Methods Biomater. Sci. Catal. Sci. Technol. Chem. Commun. Chem. Soc. Rev. CHEM EDUC RES PRACT CRYSTENGCOMM Dalton Trans. Energy Environ. Sci. ENVIRON SCI-NANO ENVIRON SCI-PROC IMP ENVIRON SCI-WAT RES Faraday Discuss. Food Funct. Green Chem. Inorg. Chem. Front. Integr. Biol. J. Anal. At. Spectrom. J. Mater. Chem. A J. Mater. Chem. B J. Mater. Chem. C Lab Chip Mater. Chem. Front. Mater. Horiz. MEDCHEMCOMM Metallomics Mol. Biosyst. Mol. Syst. Des. Eng. Nanoscale Nanoscale Horiz. Nat. Prod. Rep. New J. Chem. Org. Biomol. Chem. Org. Chem. Front. PHOTOCH PHOTOBIO SCI PCCP Polym. Chem.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1