Rony Mia, Sania Habib, Mohammed A Assiri, Huihong Liu, Sakil Mahmud
Aramid fabric/fiber (AF), which possesses outstanding comprehensive qualities such as low density, high specific strength, and high specific modulus, is widely used for dresses of defense applications. Different dyes and chemicals are required to give the specific coloration effect of AF. AF are relatively difficult to dye due to their very crystalline structure and remarkable compactness. The different techniques, including supercritical carbon dioxide, microwave irradiation, liquid ammonia, ultraviolet treatment, co-polymerization, high temperature, carrier method, and ozone treatment, have already been utilized for the dyeing of AF. Among the processes, some of them show excellent dyeing performances in color fastness to wash, rubbing, and light. The AF also frequently used in harsh environments and cannot be cleaned in a timely manner; bacteria that develop on their surface might pose a health concern, making AF with antibacterial properties are extremely desirable. There have been a number of antibacterial treatments for AF to develop protection against gram-positive and gram-negative bacteria. The in-situ treatment of AF using silver nanoparticles (AgNPs) showed a high level of antibacterial activity. However, there are no reviews that discuss the coloration and antibacterial activity of AF. Therefore, this review summarized the coloration and antibacterial activity of AF using different dyes and nanoparticles.
{"title":"Coloration and antibacterial treatment of aramid fabric: A comprehensive review","authors":"Rony Mia, Sania Habib, Mohammed A Assiri, Huihong Liu, Sakil Mahmud","doi":"10.1680/jsuin.23.00065","DOIUrl":"https://doi.org/10.1680/jsuin.23.00065","url":null,"abstract":"Aramid fabric/fiber (AF), which possesses outstanding comprehensive qualities such as low density, high specific strength, and high specific modulus, is widely used for dresses of defense applications. Different dyes and chemicals are required to give the specific coloration effect of AF. AF are relatively difficult to dye due to their very crystalline structure and remarkable compactness. The different techniques, including supercritical carbon dioxide, microwave irradiation, liquid ammonia, ultraviolet treatment, co-polymerization, high temperature, carrier method, and ozone treatment, have already been utilized for the dyeing of AF. Among the processes, some of them show excellent dyeing performances in color fastness to wash, rubbing, and light. The AF also frequently used in harsh environments and cannot be cleaned in a timely manner; bacteria that develop on their surface might pose a health concern, making AF with antibacterial properties are extremely desirable. There have been a number of antibacterial treatments for AF to develop protection against gram-positive and gram-negative bacteria. The in-situ treatment of AF using silver nanoparticles (AgNPs) showed a high level of antibacterial activity. However, there are no reviews that discuss the coloration and antibacterial activity of AF. Therefore, this review summarized the coloration and antibacterial activity of AF using different dyes and nanoparticles.","PeriodicalId":22032,"journal":{"name":"Surface Innovations","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136263732","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Arrays of titanium dioxide (TiO 2 ) nanotubes were prepared on commercially pure titanium (Cp-Ti) foils by anodic oxidation in 0.5 M HF-based electrolyte with multi-walled carbon nanotubes (MWCNTs) addition up to 0.035 g/L. The samples were annealed at 450 °C for 1 h after the anodic oxidation to form a crystalline anatase structure. The effect of the MWCNTs addition on morphology and photocatalytic activity of the nanostructures was characterized by scanning electron microscopy (SEM), Raman spectroscopy, UV-Vis diffuse reflectance spectroscopy (DRS), photoluminescence (PL) spectroscopy, and methylene blue (MB) degradation tests. The results showed that MWCNTs were successfully incorporated into the TiO 2 nanotube structure, and significantly affected its photocatalytic activity. The best photocatalytic performance was achieved with the use of 0.025 g/L MWCNTs in the electrolyte composition. However, when the MWCNTs content in the electrolyte increased, the electron-hole recombination rate and photon absorption ability of the structure deteriorate, resulting in a decreased photocatalytic activity.
采用添加量为0.035 g/L的多壁碳纳米管(MWCNTs)在0.5 M hf基电解质中阳极氧化的方法，在工业纯钛(Cp-Ti)箔上制备了二氧化钛(tio2)纳米管阵列。样品经阳极氧化后，在450℃下退火1 h，形成结晶锐钛矿结构。通过扫描电镜(SEM)、拉曼光谱(Raman spectroscopy)、紫外-可见漫反射光谱(DRS)、光致发光光谱(PL)和亚甲基蓝(MB)降解测试表征了添加MWCNTs对纳米结构形貌和光催化活性的影响。结果表明，MWCNTs成功地掺入到tio2纳米管结构中，并显著影响了其光催化活性。在电解质组合物中加入0.025 g/L的MWCNTs时，光催化性能最佳。然而，当电解质中MWCNTs含量增加时，结构的电子-空穴复合速率和光子吸收能力变差，导致光催化活性下降。
{"title":"Effect of Multi-walled carbon nanotube incorporation on the photocatalytic activity of TiO<sub>2</sub> nanotubes","authors":"Mert Altay, Murat Baydoğan","doi":"10.1680/jsuin.23.00051","DOIUrl":"https://doi.org/10.1680/jsuin.23.00051","url":null,"abstract":"Arrays of titanium dioxide (TiO 2 ) nanotubes were prepared on commercially pure titanium (Cp-Ti) foils by anodic oxidation in 0.5 M HF-based electrolyte with multi-walled carbon nanotubes (MWCNTs) addition up to 0.035 g/L. The samples were annealed at 450 °C for 1 h after the anodic oxidation to form a crystalline anatase structure. The effect of the MWCNTs addition on morphology and photocatalytic activity of the nanostructures was characterized by scanning electron microscopy (SEM), Raman spectroscopy, UV-Vis diffuse reflectance spectroscopy (DRS), photoluminescence (PL) spectroscopy, and methylene blue (MB) degradation tests. The results showed that MWCNTs were successfully incorporated into the TiO 2 nanotube structure, and significantly affected its photocatalytic activity. The best photocatalytic performance was achieved with the use of 0.025 g/L MWCNTs in the electrolyte composition. However, when the MWCNTs content in the electrolyte increased, the electron-hole recombination rate and photon absorption ability of the structure deteriorate, resulting in a decreased photocatalytic activity.","PeriodicalId":22032,"journal":{"name":"Surface Innovations","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135405039","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Judith Zubia-Aranburu, Lorea Buruaga, Myriam Martin-Inaraja, Clara Rodriguez, Silvia Santos, Unai Silván, Cristina Eguizabal, Alaitz Zabala
Since electrospinning can generate micro- to nanometre-scale fibres, it is widely used for fabricating wound dressings. Electrospun scaffolds with defined three-dimensional patterns at the mat surface can be efficiently fabricated using textured collectors that transfer the topography during the manufacturing process. However, the efficacy of surface pattern transfer from the collector to the mat, the correlation between the topography and the absorption capability and the effect of sterilisation on absorption have not yet been analysed. In this study, textured patterns were imprinted over polycaprolactone electrospun mats using textured collectors. The successful transferability of the patterns was quantified through height, hybrid and functional surface topography parameters. Additionally, ethylene oxide, hydrogen peroxide (H 2 O 2 ) and ultraviolet (UV) sterilisation methods were tested, of which only UV preserved the morphological and functional integrity of the mat. Finally, fibroblasts were used to analyse the cytotoxicity and cellular response of the dressings, verifying their biocompatible nature. This study demonstrates that absorption capacity can be modulated by the surface texture of the wound dressing. The S dq and S dr parameters were identified as key surface characteristics for enhancing absorption capacity and yielded an increase of up to 176.76% compared with the non-textured control, thus revealing the potential of surface functionalisation for increasing exudate absorption.
{"title":"Towards tailored surface topography on electrospun wound dressings for maximised exudate absorption","authors":"Judith Zubia-Aranburu, Lorea Buruaga, Myriam Martin-Inaraja, Clara Rodriguez, Silvia Santos, Unai Silván, Cristina Eguizabal, Alaitz Zabala","doi":"10.1680/jsuin.23.00044","DOIUrl":"https://doi.org/10.1680/jsuin.23.00044","url":null,"abstract":"Since electrospinning can generate micro- to nanometre-scale fibres, it is widely used for fabricating wound dressings. Electrospun scaffolds with defined three-dimensional patterns at the mat surface can be efficiently fabricated using textured collectors that transfer the topography during the manufacturing process. However, the efficacy of surface pattern transfer from the collector to the mat, the correlation between the topography and the absorption capability and the effect of sterilisation on absorption have not yet been analysed. In this study, textured patterns were imprinted over polycaprolactone electrospun mats using textured collectors. The successful transferability of the patterns was quantified through height, hybrid and functional surface topography parameters. Additionally, ethylene oxide, hydrogen peroxide (H 2 O 2 ) and ultraviolet (UV) sterilisation methods were tested, of which only UV preserved the morphological and functional integrity of the mat. Finally, fibroblasts were used to analyse the cytotoxicity and cellular response of the dressings, verifying their biocompatible nature. This study demonstrates that absorption capacity can be modulated by the surface texture of the wound dressing. The S dq and S dr parameters were identified as key surface characteristics for enhancing absorption capacity and yielded an increase of up to 176.76% compared with the non-textured control, thus revealing the potential of surface functionalisation for increasing exudate absorption.","PeriodicalId":22032,"journal":{"name":"Surface Innovations","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135805987","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A slippery surface has the capability to protect the substrate surface, which can prevent substrate corrosion in a harsh environment. However, existing slippery surfaces have the limitation of insufficient oil-locking capability for rough structures, which limits their practical application. To solve the aforementioned limitation, the authors developed a slippery surface with a good oil-locking capability. First, a wire-cutting machine tool was used to fabricate ternary coupled grooved structures on an aluminum (Al) substrate, which could increase the lubricant-storage capacity of the microstructures, and the substrate was named slippery porous surface with groove-textured aluminum (Slips-G-Al). Then, a surface durability test was performed involving lubricant shear, sandpaper wear and water impact. The chemical stability test involved acid, alkali, salt corrosion and weather resistance tests, which showed that Slips-G-Al had a good lubricant-storage capacity compared with the traditional Slips surface. In addition, the self-cleaning performance and the fog collection capability of Slips-G-Al were also studied. Finally, an electrochemical corrosion test of Slips-G-Al was carried out. The findings showed remarkable application prospects in the aerospace and shipbuilding fields.
光滑的表面具有保护基材表面的能力，可以防止基材在恶劣环境中被腐蚀。然而，现有光滑表面对粗糙结构的锁油能力不足，限制了其实际应用。为了解决上述限制，作者开发了一种具有良好锁油能力的光滑表面。首先，利用线切割机床在铝(Al)基板上制备三元耦合沟槽结构，增加了微观结构的润滑油储存能力，并将基片命名为带有沟槽织构铝的光滑多孔表面(slip - g -Al)。然后，进行了包括润滑油剪切、砂纸磨损和水冲击在内的表面耐久性测试。化学稳定性测试包括酸、碱、盐腐蚀和耐候性测试，表明与传统的slip表面相比，slip - g - al具有良好的润滑油储存能力。此外，还研究了slip - g - al的自清洁性能和集雾能力。最后，对滑模- g - al进行了电化学腐蚀试验。研究结果在航空航天、造船等领域具有良好的应用前景。
{"title":"Slippery surface with ternary coupled structures for improving lubricant storage capacity","authors":"Ying Zhai, Shuwei Lv, Qiao Liu, Xiaodong Yang, Xianli Liu, Zhuojuan Yang, Chunyu Mao","doi":"10.1680/jsuin.23.00049","DOIUrl":"https://doi.org/10.1680/jsuin.23.00049","url":null,"abstract":"A slippery surface has the capability to protect the substrate surface, which can prevent substrate corrosion in a harsh environment. However, existing slippery surfaces have the limitation of insufficient oil-locking capability for rough structures, which limits their practical application. To solve the aforementioned limitation, the authors developed a slippery surface with a good oil-locking capability. First, a wire-cutting machine tool was used to fabricate ternary coupled grooved structures on an aluminum (Al) substrate, which could increase the lubricant-storage capacity of the microstructures, and the substrate was named slippery porous surface with groove-textured aluminum (Slips-G-Al). Then, a surface durability test was performed involving lubricant shear, sandpaper wear and water impact. The chemical stability test involved acid, alkali, salt corrosion and weather resistance tests, which showed that Slips-G-Al had a good lubricant-storage capacity compared with the traditional Slips surface. In addition, the self-cleaning performance and the fog collection capability of Slips-G-Al were also studied. Finally, an electrochemical corrosion test of Slips-G-Al was carried out. The findings showed remarkable application prospects in the aerospace and shipbuilding fields.","PeriodicalId":22032,"journal":{"name":"Surface Innovations","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135805986","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
X W Chen, S Tang, C Wu, W L Xie, M Zhang, D F Zhang
To improve the corrosion resistance of the Ti–0.3Mo–0.8Ni (TA10) titanium alloy, a micro-arc oxidation coating was prepared on its surface, and the effect of different amounts of graphite addition on the structure and corrosion resistance of the coatings was studied. Through methods such as X-ray diffraction phase analysis, microscopic morphology analysis, roughness analysis, coating thickness analysis and hardness testing, it was found that the added graphite particles can react with silicon (Si) in the electrolyte to promote the formation of the silicon carbide (SiC) phase, thereby improving the surface morphology of the coatings, increasing the thickness of the coatings and improving the microhardness of the coatings. At the same time, dynamic potential polarization curve and scanning electrochemical test results show that the formation of the silicon carbide phase can increase self-corrosion potential and reduce self-corrosion current density. When the amount of graphite added is 1.0 g/l, the self-corrosion potential and self-corrosion current density are −0.129 V and 2.9 × 10 −8 A/cm 2 , respectively. This indicates that adding graphite particles can enhance the corrosion resistance of the TA10 titanium alloy.
{"title":"Study on the structure and corrosion resistance of micro-arc oxidation coatings on TA10 titanium alloy with different graphite additions","authors":"X W Chen, S Tang, C Wu, W L Xie, M Zhang, D F Zhang","doi":"10.1680/jsuin.23.00040","DOIUrl":"https://doi.org/10.1680/jsuin.23.00040","url":null,"abstract":"To improve the corrosion resistance of the Ti–0.3Mo–0.8Ni (TA10) titanium alloy, a micro-arc oxidation coating was prepared on its surface, and the effect of different amounts of graphite addition on the structure and corrosion resistance of the coatings was studied. Through methods such as X-ray diffraction phase analysis, microscopic morphology analysis, roughness analysis, coating thickness analysis and hardness testing, it was found that the added graphite particles can react with silicon (Si) in the electrolyte to promote the formation of the silicon carbide (SiC) phase, thereby improving the surface morphology of the coatings, increasing the thickness of the coatings and improving the microhardness of the coatings. At the same time, dynamic potential polarization curve and scanning electrochemical test results show that the formation of the silicon carbide phase can increase self-corrosion potential and reduce self-corrosion current density. When the amount of graphite added is 1.0 g/l, the self-corrosion potential and self-corrosion current density are −0.129 V and 2.9 × 10 −8 A/cm 2 , respectively. This indicates that adding graphite particles can enhance the corrosion resistance of the TA10 titanium alloy.","PeriodicalId":22032,"journal":{"name":"Surface Innovations","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135547284","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Mohamed Rabia, Asmaa M Elsayed, Maha Abdallah Alnuwaiser
The Mn(IV) oxide/Mn(IV) sulfide/poly-2-amino-1-mercaptobenzene (MnO 2 -MnS 2 /P2AMB) nanocomposite is prepared through a polymerization reaction (oxidation) and is utilized as a highly photo-electrocatalytic material for green hydrogen generation from sewage water. The MnO 2 -MnS 2 /P2AMB nanocomposite demonstrates remarkable optical properties, characterized by a bandgap of 1.81 eV. To promote the water splitting reaction by the synthesized MnO 2 -MnS 2 /P2AMB nanocomposite photoelectrode, sewage water is utilized as a sacrificial agent to effectively facilitate the generation of hydrogen gas through the evaluation of the current (J ph ). At −0.9 V, the J ph and J o values are determined to be −0.33 and −0.2 mA.cm -2 , correspondingly. Notably, the optimum J ph value of −0.26 mA.cm −2 is observed for incidence photons at 340 nm, indicating that light with higher frequency and energy leads to the generation of more electrons from the MnO 2 -MnS 2 /P2AMB nanocomposite and subsequent hydrogen production. Conversely, the lowest J ph value of −0.21 mA.cm −2 is obtained at 730 nm, suggesting the influence of infrared waves on the photoelectrode due to the small bandgap (1.86 eV) of the materials, as calculated in a previous analysis. This study represents an initial step towards the conversion of wastewater into hydrogen gas, which can serve as a sustainable fuel source for various industrial applications.
{"title":"Mn(IV) oxide/Mn(IV) sulfide/poly-2-amino-1-mercaptobenzene for green hydrogen generation from sewage water through the photoelectrocatalytic process","authors":"Mohamed Rabia, Asmaa M Elsayed, Maha Abdallah Alnuwaiser","doi":"10.1680/jsuin.23.00031","DOIUrl":"https://doi.org/10.1680/jsuin.23.00031","url":null,"abstract":"The Mn(IV) oxide/Mn(IV) sulfide/poly-2-amino-1-mercaptobenzene (MnO 2 -MnS 2 /P2AMB) nanocomposite is prepared through a polymerization reaction (oxidation) and is utilized as a highly photo-electrocatalytic material for green hydrogen generation from sewage water. The MnO 2 -MnS 2 /P2AMB nanocomposite demonstrates remarkable optical properties, characterized by a bandgap of 1.81 eV. To promote the water splitting reaction by the synthesized MnO 2 -MnS 2 /P2AMB nanocomposite photoelectrode, sewage water is utilized as a sacrificial agent to effectively facilitate the generation of hydrogen gas through the evaluation of the current (J ph ). At −0.9 V, the J ph and J o values are determined to be −0.33 and −0.2 mA.cm -2 , correspondingly. Notably, the optimum J ph value of −0.26 mA.cm −2 is observed for incidence photons at 340 nm, indicating that light with higher frequency and energy leads to the generation of more electrons from the MnO 2 -MnS 2 /P2AMB nanocomposite and subsequent hydrogen production. Conversely, the lowest J ph value of −0.21 mA.cm −2 is obtained at 730 nm, suggesting the influence of infrared waves on the photoelectrode due to the small bandgap (1.86 eV) of the materials, as calculated in a previous analysis. This study represents an initial step towards the conversion of wastewater into hydrogen gas, which can serve as a sustainable fuel source for various industrial applications.","PeriodicalId":22032,"journal":{"name":"Surface Innovations","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135199671","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This study aims to improve the wear resistance of nitrile butadiene rubber (NBR) by depositing diamond-like carbon (DLC) films using Direct Current Magnetron Sputtering (DC-MS), a simple and cost-effective technique. DC-MS is a coating process that uses a direct current to generate an electric field and sputter conductive materials from a target to a substrate. A magnetic field enhances the plasma density and sputtering rate. The study examines the bonding force, surface morphology, tribological properties, and mechanical strength of DLC. Scanning electron microscopy, Raman spectroscopy, and X-ray photoelectron spectroscopy are used to characterize the cross-sectional morphology, structural features, and chemical bonding species of DLC films and NBR substrates. Nanoindentation results show that varying the power has no significant effect on hardness and Young’s modulus. Tribological tests are conducted under ambient conditions using a ball-and-disk tribometer, with a fixed load of 0.3 N. Results indicate that the power of DLC films influences their tribological properties. Specifically, DLC films prepared at 120 W exhibit superior tribological properties, maintaining a stable coefficient of friction (CoF) below 0.2 for the test duration. These findings have promising implications for their application.
{"title":"Effects of power on tribological and mechanical properties of diamond-like carbon film modified nitrile butadiene rubber","authors":"Changxin Han, Jiaqi Liu, Huatang Cao, T. Yang, Zhiyu Wu, Qiaoyuan Deng, Feng Wen","doi":"10.1680/jsuin.23.00028","DOIUrl":"https://doi.org/10.1680/jsuin.23.00028","url":null,"abstract":"This study aims to improve the wear resistance of nitrile butadiene rubber (NBR) by depositing diamond-like carbon (DLC) films using Direct Current Magnetron Sputtering (DC-MS), a simple and cost-effective technique. DC-MS is a coating process that uses a direct current to generate an electric field and sputter conductive materials from a target to a substrate. A magnetic field enhances the plasma density and sputtering rate. The study examines the bonding force, surface morphology, tribological properties, and mechanical strength of DLC. Scanning electron microscopy, Raman spectroscopy, and X-ray photoelectron spectroscopy are used to characterize the cross-sectional morphology, structural features, and chemical bonding species of DLC films and NBR substrates. Nanoindentation results show that varying the power has no significant effect on hardness and Young’s modulus. Tribological tests are conducted under ambient conditions using a ball-and-disk tribometer, with a fixed load of 0.3 N. Results indicate that the power of DLC films influences their tribological properties. Specifically, DLC films prepared at 120 W exhibit superior tribological properties, maintaining a stable coefficient of friction (CoF) below 0.2 for the test duration. These findings have promising implications for their application.","PeriodicalId":22032,"journal":{"name":"Surface Innovations","volume":null,"pages":null},"PeriodicalIF":3.5,"publicationDate":"2023-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47155022","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yuheng Li, Yuyang Zhou, Ziheng Wang, Zhenjing Duan, Yukai Gu, Yang Chen, Shuaishuai Wang, Faze Chen, Xin Liu, Jiyu Liu
In this paper, we investigate the wettability change of APCP-treated PTFE surfaces with time under different storage temperatures and pressures, and the results indicate that low temperature can hinder the wettability recovery. After storing for 5 days, WCA of PTFE stored under room temperature (25°C) recovered from 19 ± 2° to 54 ± 2°, while the WCA of PTFE stored under low temperature (−10°C) just increased to 42 ± 3°. Then, the mechanism contributing to the slower wettability recovery was investigated by analyzing surface chemical compositions via X-ray photoelectron spectroscopy (XPS) and observing surface morphologies using atomic force microscope (AFM). After 15 days storage, the contents of O and N decreased obviously, while F content increased. The F content of sample stored under low temperature was 20% less than that stored under room temperature. By contrast, surface micro-morphologies remained unchanged during storage, and the surface roughness Ra of each sample was around 7 nm. Finally, peel strength tests were conducted on APCP-treated PTFE surfaces stored under different temperatures, and the surfaces stored under low temperature maintained better adhesive property; after 15 days of storage, the adhesive strength could still reach 400 N/m, which was 376% higher than that of the untreated surface. The research results are expected to significantly facilitate practical applications of APCP modification and PTFE surfaces.
{"title":"Stability of cold plasma improved wettability and adhesive property of polytetrafluoroethylene surface","authors":"Yuheng Li, Yuyang Zhou, Ziheng Wang, Zhenjing Duan, Yukai Gu, Yang Chen, Shuaishuai Wang, Faze Chen, Xin Liu, Jiyu Liu","doi":"10.1680/jsuin.23.00045","DOIUrl":"https://doi.org/10.1680/jsuin.23.00045","url":null,"abstract":"In this paper, we investigate the wettability change of APCP-treated PTFE surfaces with time under different storage temperatures and pressures, and the results indicate that low temperature can hinder the wettability recovery. After storing for 5 days, WCA of PTFE stored under room temperature (25°C) recovered from 19 ± 2° to 54 ± 2°, while the WCA of PTFE stored under low temperature (−10°C) just increased to 42 ± 3°. Then, the mechanism contributing to the slower wettability recovery was investigated by analyzing surface chemical compositions via X-ray photoelectron spectroscopy (XPS) and observing surface morphologies using atomic force microscope (AFM). After 15 days storage, the contents of O and N decreased obviously, while F content increased. The F content of sample stored under low temperature was 20% less than that stored under room temperature. By contrast, surface micro-morphologies remained unchanged during storage, and the surface roughness Ra of each sample was around 7 nm. Finally, peel strength tests were conducted on APCP-treated PTFE surfaces stored under different temperatures, and the surfaces stored under low temperature maintained better adhesive property; after 15 days of storage, the adhesive strength could still reach 400 N/m, which was 376% higher than that of the untreated surface. The research results are expected to significantly facilitate practical applications of APCP modification and PTFE surfaces.","PeriodicalId":22032,"journal":{"name":"Surface Innovations","volume":null,"pages":null},"PeriodicalIF":3.5,"publicationDate":"2023-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44174559","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Flexible PVA/PANI/Ag nanocomposite consisting of polyaniline (PANI) and silver nanoparticles (AgNPs) with Polyvinyl alcohol (PVA) were successful fabricated using casting method to applied in storage energy devices. The surface characteristics of the composite films were analyzed using XRD, DSC, and FTIR techniques. The estimated crystallite size of AgNPs is 11.7 nm increased to 15.3 nm by enhancing Ag from 2% to 4%. In addition, the morphology of the films is investigated utilizing SEM. The conductivity σdc is improved from 4.8x10−11 S.cm−1 for PVA to 1.3x10−10 S.cm−1 for PVA/PANI and to 1.2x10−9 S.cm−1 for PVA/PANI/Ag. Furthermore, by increasing the temperature value, the electrical resistance is reduced, besides, the activation energy is modified with addition of PANI and Ag in PVA matrix. The PVA/PANI/Ag are irradiated with hydrogen fluence 0.4x1018, 0.8x1018, and 1.2x1018 ions/cm2. The σac is enhanced from 2.67x10−9 S/cm for PVA/PANI/Ag to 2.02x10−8 S/cm for 0.4x1018 ions/cm2 and to 3.95x10−6 S/cm 1.2x1018 ions/cm2. Moreover, the dielectric constant increased of 0.43 for PVA/PANI/Ag to 0.56, 1.23, and 4.18 when are exposed to 0.4x1018, 0.8x1018, and 1.2x1018 ions.cm−2, respectively. The results showed modifications in electrical characteristics of the the irradiated composite, which open the way for applying these samples in wide range of dielectric applications.
{"title":"Fabrication, surface characterization and electrical properties of hydrogen irradiated nanocomposite materials","authors":"N. Alsaif, A. Atta, E. Abdeltwab, M. Abdel-Hamid","doi":"10.1680/jsuin.23.00030","DOIUrl":"https://doi.org/10.1680/jsuin.23.00030","url":null,"abstract":"Flexible PVA/PANI/Ag nanocomposite consisting of polyaniline (PANI) and silver nanoparticles (AgNPs) with Polyvinyl alcohol (PVA) were successful fabricated using casting method to applied in storage energy devices. The surface characteristics of the composite films were analyzed using XRD, DSC, and FTIR techniques. The estimated crystallite size of AgNPs is 11.7 nm increased to 15.3 nm by enhancing Ag from 2% to 4%. In addition, the morphology of the films is investigated utilizing SEM. The conductivity σdc is improved from 4.8x10−11 S.cm−1 for PVA to 1.3x10−10 S.cm−1 for PVA/PANI and to 1.2x10−9 S.cm−1 for PVA/PANI/Ag. Furthermore, by increasing the temperature value, the electrical resistance is reduced, besides, the activation energy is modified with addition of PANI and Ag in PVA matrix. The PVA/PANI/Ag are irradiated with hydrogen fluence 0.4x1018, 0.8x1018, and 1.2x1018 ions/cm2. The σac is enhanced from 2.67x10−9 S/cm for PVA/PANI/Ag to 2.02x10−8 S/cm for 0.4x1018 ions/cm2 and to 3.95x10−6 S/cm 1.2x1018 ions/cm2. Moreover, the dielectric constant increased of 0.43 for PVA/PANI/Ag to 0.56, 1.23, and 4.18 when are exposed to 0.4x1018, 0.8x1018, and 1.2x1018 ions.cm−2, respectively. The results showed modifications in electrical characteristics of the the irradiated composite, which open the way for applying these samples in wide range of dielectric applications.","PeriodicalId":22032,"journal":{"name":"Surface Innovations","volume":null,"pages":null},"PeriodicalIF":3.5,"publicationDate":"2023-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44704081","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Asad Masood, Naeem Ahmed, MF Mohd Razip Wee, Muhammad ASM Haniff, Ebrahim Mahmoudi, Anuttam Patra, Kim S Siow
The production of suitable coatings with excellent antibacterial performance has now become a viable technique for enhancing the functional qualities of various biomedical materials. Here, pulsed plasma polymerisation was used to produce an antibacterial coating from the carvone oil of the spearmint plant. The coating films have adjustable chemical and physical properties based on the deposition parameter – that is, duty cycle (DC). The static water contact angle (WCA) values of pulsed wave (PW) plasma-polymerised carvone (ppCar) increase with the increase in DC. Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy showed that the molecular structure of carvone is less fragmented, retaining moieties associated with C–O and C=O when the DC is reduced. These C–O and C=O moieties likely reduced the measured static WCA. This surface chemical composition with predominantly C–O and C=O also showed a stronger bactericidal effect, based on the biofilm assay with bacteria (Escherichia coli and Staphylococcus aureus), compared with those coatings with C–C and C–H produced at a higher DC. As shown by the atomic force microscopy images, a lower DC resulted in smoother and more homogeneous coatings than those produced with a higher DC, while field emission scanning electron microscopy images show that when E. coli and S. aureus membranes were attached to PW ppCar, they ruptured and distorted with a pore created and that these distortions and ruptures increased as the DC was reduced.
{"title":"Pulsed plasma polymerisation of carvone: characterisations and antibacterial properties","authors":"Asad Masood, Naeem Ahmed, MF Mohd Razip Wee, Muhammad ASM Haniff, Ebrahim Mahmoudi, Anuttam Patra, Kim S Siow","doi":"10.1680/jsuin.22.00042","DOIUrl":"https://doi.org/10.1680/jsuin.22.00042","url":null,"abstract":"The production of suitable coatings with excellent antibacterial performance has now become a viable technique for enhancing the functional qualities of various biomedical materials. Here, pulsed plasma polymerisation was used to produce an antibacterial coating from the carvone oil of the spearmint plant. The coating films have adjustable chemical and physical properties based on the deposition parameter – that is, duty cycle (DC). The static water contact angle (WCA) values of pulsed wave (PW) plasma-polymerised carvone (ppCar) increase with the increase in DC. Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy showed that the molecular structure of carvone is less fragmented, retaining moieties associated with C–O and C=O when the DC is reduced. These C–O and C=O moieties likely reduced the measured static WCA. This surface chemical composition with predominantly C–O and C=O also showed a stronger bactericidal effect, based on the biofilm assay with bacteria (Escherichia coli and Staphylococcus aureus), compared with those coatings with C–C and C–H produced at a higher DC. As shown by the atomic force microscopy images, a lower DC resulted in smoother and more homogeneous coatings than those produced with a higher DC, while field emission scanning electron microscopy images show that when E. coli and S. aureus membranes were attached to PW ppCar, they ruptured and distorted with a pore created and that these distortions and ruptures increased as the DC was reduced.","PeriodicalId":22032,"journal":{"name":"Surface Innovations","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135114544","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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