Iranian Polymer Journal最新文献_第5页

Statistical analysis of radiation crosslinking process parameters on the mechanical properties of poly(vinyl chloride) using the Taguchi method 用田口法统计分析辐射交联工艺参数对聚氯乙烯力学性能的影响

IF 2.8 3区化学 Q3 POLYMER SCIENCE

Iranian Polymer Journal

Pub Date : 2025-02-14 DOI: 10.1007/s13726-025-01459-1

Onur Çoban, Müsemma Erdoğan, Şahin Güzel, Ömer Bostan, Ahmet Erdem

In this study, the tensile properties of plasticized PVC cables were optimized using radiation crosslinking process parameters, such as the crosslinking agent type, agent content, gamma irradiation dose rate, and PVC K value. Formulations were arranged for optimization using the Taguchi-based design of the experiments. Tensile tests were performed on all these different formulations to calculate the signal-to-noise ratios, which were used to maximize the tensile strength and strain values. Finally, regression and analysis of variance statistical analyses were performed to determine the effect of each design factor on the tensile properties. In addition, the gel content of each sample was measured and discussed to support the crosslinking performance on tensile properties. The analysis showed that the K value of PVC was the most significant process parameter affecting both tensile strength and strain. The results also indicated that the ethylene glycol dimethacrylate (EGDMA) crosslinking agent performed better than trimethylolpropane trimethacrylate (TMPTMA) for the tensile strain. The optimum agent content was found to be 10 phr for maximum tensile properties. As a result of the analyses, it is worth noting that the K value of PVC should be considered to maximize the crosslinking performance on the tensile properties.

Graphical abstract

本研究采用交联剂种类、交联剂含量、γ辐照剂量率、PVC K值等辐射交联工艺参数对塑化PVC电缆的拉伸性能进行优化。采用田口法对配方进行优化。对所有这些不同的配方进行拉伸测试，以计算信噪比，用于最大化拉伸强度和应变值。最后进行回归和方差分析统计分析，确定各设计因素对拉伸性能的影响。此外，还测量了每种样品的凝胶含量，并讨论了交联性能对拉伸性能的影响。分析表明，PVC的K值是影响拉伸强度和应变最显著的工艺参数。结果还表明，乙二醇二甲基丙烯酸酯（EGDMA）交联剂的拉伸性能优于三甲基丙烷三甲基丙烯酸酯（TMPTMA）。拉伸性能最佳的助剂用量为10phr。分析结果表明，为了使交联性能对拉伸性能的影响最大化，应考虑PVC的K值。图形抽象

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引用次数: 0

Effect of amorphous and crystalline zirconia on the structural, optical, antifungal and thermal behavior of polymethylmethacrylate/zirconium dioxide nanocomposites in complete denture prosthesis 非晶氧化锆和结晶氧化锆对聚甲基丙烯酸甲酯/二氧化锆纳米复合材料全口义齿结构、光学、抗真菌和热性能的影响

IF 2.8 3区化学 Q3 POLYMER SCIENCE

Iranian Polymer Journal

Pub Date : 2025-02-13 DOI: 10.1007/s13726-025-01458-2

Nafis Ahmad, Zeba Jafri, Mohd Shoeb Khan, S. Ishraque Ahmad, Saiema Ahmedi, Nikhat Manzoor, Zishan Hussain Khan

Polymer-based nanocomposites have gained significant attention nowadays and they have potential to replace the existing materials in different fields including denture stomatitis. Polymethylmethacrylate (PMMA) is one of the promising polymers to meet the demands of current materials research. In the present study, the nanocomposites of PMMA with zirconium dioxide (ZrO₂) nanoparticles were synthesized in amorphous (PAZ) and crystalline (PCZ) forms using a facile chemical approach at 2, 3, 4 and 5 weight percentages. The structural, thermal and optical properties of nanocomposites were studied using AT-FTIR, XRD, SEM/EDX, TGA/DTA, and UV–Vis spectroscopy techniques. PAZ and PCZ both were thermally stable but PAZ was found more stable than PCZ. There was no observation of significant peak on ZrO₂ NPs, among all nanocomposite samples, which indicates complete dispersion of NPs within the solution confirming the formation of PAZ and PCZ nanocomposites. PCZ samples have played a significant role in reduction of colony forming units (CFUs) in 5% concentration. All Candida species gave MIC of 10 µg/mL using fluconazole (control). The MIC of both forms PCZ/PAZ samples was tested at 2, 3, 4 and 5 percentage (w/w) concentrations. The obtained MIC values were ranged between 550 and 995 µg/mL. The PAZ samples have shown high efficacy against all Candida species with MIC of 550, 580, 585 and 590 µg/mL. The PCZ sample of 2% exhibited high MIC values ranging from 990 to 995 µg/mL. However, PCZ sample of 5% gave MIC value of 670–690 µg/mL against all Candida species.

Graphical abstract

聚合物基纳米复合材料近年来受到广泛关注，在包括义齿口腔炎在内的多个领域具有替代现有材料的潜力。聚甲基丙烯酸甲酯（PMMA）是满足当前材料研究需求的有前途的聚合物之一。在本研究中，采用简单的化学方法，以2、3、4和5的重量百分比合成了无定形（PAZ）和晶体（PCZ）形式的PMMA与二氧化锆（ZrO2）纳米颗粒的纳米复合材料。采用AT-FTIR、XRD、SEM/EDX、TGA/DTA、UV-Vis等技术研究了纳米复合材料的结构、热、光学性能。PAZ和PCZ均具有热稳定性，但PAZ比PCZ更稳定。在所有纳米复合材料样品中，没有观察到明显的ZrO2 NPs峰，这表明NPs在溶液中完全分散，证实了PAZ和PCZ纳米复合材料的形成。PCZ样品在5%浓度下对菌落形成单位（cfu）有显著的降低作用。氟康唑（对照）给所有念珠菌的MIC均为10µg/mL。分别在2、3、4和5% （w/w）浓度下检测两种形式PCZ/PAZ样品的MIC。所得MIC值在550 ~ 995µg/mL之间。PAZ样品的MIC分别为550、580、585和590µg/mL，对所有念珠菌均有较好的抑制作用。2% PCZ样品的MIC值较高，范围为990 ~ 995µg/mL。而5% PCZ样品对所有念珠菌的MIC值为670 ~ 690µg/mL。图形抽象

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引用次数: 0

Experimental analysis of gas-assisted co-injection molding for complex polymer multilayer circular tubular components 复杂聚合物多层圆管件气体辅助共注射成型实验分析

IF 2.8 3区化学 Q3 POLYMER SCIENCE

Iranian Polymer Journal

Pub Date : 2025-02-12 DOI: 10.1007/s13726-025-01461-7

Shuhui Huang, Zhuyu Zhao, Tao Zhang, Jun Lin, Haikun Du, Wei Zhang, Bin Xiao

Based on the self-built gas-assisted co-injection experimental platform, the gas-assisted co-injection molding experiments were conducted on the cylindrical pipe fittings with cavity sectional diameters of 20 and 30 mm. A UDF model was constructed using CFD software for numerical simulation. The study investigated the influence of melt injection sequence, melt filling methods, and cavity tube diameters on the rheological behavior of inner layer melt penetrating the outer layer melt and the penetration behavior of gas through the inner layer melts. The evolution mechanism was analyzed in conjunction with the flow field effects. The findings revealed that when a higher viscosity melt penetrates a lower viscosity melt, i.e., the injection sequence of PP-HDPE, HDPE tends to squeeze more PP towards the mold wall; and the N₂ with the same injection pressure was subjected to increased resistance when the melt with higher viscosity penetrates, intensifying the interface instability between the inner and outer layer melt. The variability and fluctuation in the total residual wall thickness and the residual wall thickness of the outer melt in GACIM samples increased. When the melt-filling method and injection sequence were the same, an increase in the cavity tube diameter decreased the instability of the gas–melt and inner-outer layer melt interfaces. These insights provide technical guidance and references for the sectional design and process parameter adjustment of gas-assisted co-injection molding products.

Graphical abstract

基于自建气体辅助共注射实验平台，对型腔截面直径为20和30 mm的圆柱形管件进行了气体辅助共注射成型实验。利用CFD软件建立UDF模型进行数值模拟。研究了熔体注入顺序、熔体填充方式和空腔管径对内层熔体穿透外层熔体流变行为和气体穿透内层熔体行为的影响。结合流场效应分析了其演化机理。结果表明：当高粘度熔体穿透低粘度熔体时，即PP-HDPE的注射顺序，HDPE倾向于向模壁挤压更多的PP；当黏度较高的熔体渗透时，相同注入压力下的N2受到的阻力增大，加剧了内外层熔体界面的不稳定性。GACIM样品总残余壁厚和外熔体残余壁厚的变异性和波动性增大。在填充方式和注射顺序相同的情况下，增大腔管直径降低了气-熔体和内外层熔体界面的不稳定性。这些见解为气辅共注射成型产品的截面设计和工艺参数调整提供了技术指导和参考。图形抽象

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引用次数: 0

Amine-functionalized radiation-grafted nylon-6 fibers: synthesis and adsorption performance for diclofenac sodium 胺功能化辐射接枝尼龙-6纤维的合成及其对双氯芬酸钠的吸附性能

IF 2.8 3区化学 Q3 POLYMER SCIENCE

Iranian Polymer Journal

Pub Date : 2025-02-07 DOI: 10.1007/s13726-025-01453-7

Sharifah Mona Abd Aziz Abdullah, Luqman Chuah Abdullah, Siti Nurul Ain Md Jamil, Teo Ming Ting, Thomas Shean Yaw Choong

The removal of pharmaceutical contaminants from water sources remains a critical challenge due to the limited efficiency and high cost of the current technologies. This study presents the development of innovative fibrous adsorbents synthesized through radiation-induced graft-copolymerization (RIGC) of glycidyl methacrylate (GMA) onto nylon-6 (Ny6) fibers. These GMA-grafted fibers were subsequently functionalized with 1,3-diaminopropane (DAP) and diethylenetriamine (DETA), resulting in the formation of DAP(GMA-g-Ny6) and DETA(GMA-g-Ny6) adsorbents. By optimizing the graft yield (%), amine functionality, and reaction time, the amine densities of 3.39 and 2.66 mmol/g were achieved for DAP(GMA-g-Ny6) and DETA(GMA-g-Ny6), respectively. The analytical techniques, including FTIR, XPS, SEM, BET, TGA, and XRD confirmed successful amine incorporation and characterized the structural changes. The preliminary adsorption experimental results demonstrated that the DAP and DETA functionalized fibers exhibited high adsorption capacities, with DAP(GMA-g-Ny6) achieving a maximum diclofenac sodium removal efficiency of 99%, compared to 90% for DETA(GMA-g-Ny6). The superior performance of DAP(GMA-g-Ny6) can be attributed to its high amine density (3.00 mmol/g), which provides extensive amine group coverage on the surface of the grafted fiber, thereby facilitating strong hydrogen bonding and electrostatic interactions with diclofenac sodium molecules. These findings suggest that the amine-functionalized nylon-6 fibers synthesized through RIGC offer a promising and effective solution for the removal of diclofenac sodium from water, highlighting their potential application in environmental remediation.

由于现有技术的效率有限和成本高，从水源中去除药物污染物仍然是一个重大挑战。本文介绍了通过辐射诱导甲基丙烯酸缩水甘油酯（GMA）在尼龙-6 （Ny6）纤维上接枝共聚（RIGC）合成新型纤维吸附剂的研究进展。这些gma接枝的纤维随后被1,3-二氨基丙烷（DAP）和二乙烯三胺（DETA）功能化，形成DAP（GMA-g-Ny6）和DETA（GMA-g-Ny6）吸附剂。通过优化接枝收率（%）、胺官能性和反应时间，DAP（GMA-g-Ny6）和DETA（GMA-g-Ny6）的胺密度分别为3.39和2.66 mmol/g。FTIR、XPS、SEM、BET、TGA、XRD等分析技术证实了胺的成功掺入，并对结构变化进行了表征。初步吸附实验结果表明，DAP和DETA功能化纤维具有较高的吸附能力，DAP（GMA-g-Ny6）对双氯芬酸钠的最大去除效率为99%，而DETA（GMA-g-Ny6）对双氯芬酸钠的去除效率为90%。DAP（GMA-g-Ny6）的优异性能可归因于其高胺密度（3.00 mmol/g），可在接枝纤维表面提供广泛的胺基覆盖，从而促进与双氯芬酸钠分子的强氢键和静电相互作用。这些结果表明，通过RIGC合成的胺功能化尼龙-6纤维为去除水中的双氯芬酸钠提供了一种有前景和有效的解决方案，突出了其在环境修复中的潜在应用。

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引用次数: 0

Developing antimicrobial, biodegradable, sustainable, and eco-friendly biofilms: harnessing tea waste for a greener future 开发抗菌、可生物降解、可持续和环保的生物膜：利用茶废物创造更绿色的未来

IF 2.8 3区化学 Q3 POLYMER SCIENCE

Iranian Polymer Journal

Pub Date : 2025-02-07 DOI: 10.1007/s13726-025-01451-9

Jyoteshna Kharb, Ritu Saharan

In the present context, the increasing environmental issues, such as pollution, exhaustion of fossil resources, generation of non-biodegradable wastes and threatening effects on animals and humans, etc., associated with usage of plastics have led to the emergence of eco-friendly plastics in the field of research. Development of bioplastics has attracted immense interest worldwide. In view of the same, the present research work focuses on sustainable synthesis of eco-friendly biofilms from renewable and easily available tea waste. Various biofilms comprising different amount of tea waste (0, 2, 4, 6, 8, and 10 g) along with corn starch, plasticizer, and citric acid were synthesized and compared based on their functional, morphological, and thermal behavior. The synthesized biofilms were examined using Fourier transform infrared spectroscopy, thermogravimetric analysis, scanning electron microscopy, and X-ray diffraction analysis. The results revealed that the biofilm consists of tea waste powder and corn starch in 3:2 proportion (sample BF-4) has lesser cracks and grooves and contains more amorphous character compared to the other biofilms. The produced biofilms show biodegradability and possess antimicrobial properties against microbes such as Escherichia coli, Staphylococcus aureus, and Aspergillus flavus. The development of biofilms from tea waste presents a promising avenue for sustainable packaging materials. Harnessing naturally abundant resources like tea waste not only reduces waste but also offers a range of benefits, such as being low-cost, environmentally friendly, energy-efficient, and biodegradable. Moreover, the antimicrobial properties inherent in tea waste can contribute to the preservation of packaged goods, enhancing their shelf life.

Graphical Abstract

在当前背景下，与塑料使用相关的污染、化石资源枯竭、不可生物降解废物的产生以及对动物和人类的威胁等环境问题日益严重，导致环保塑料在研究领域出现。生物塑料的发展在全世界引起了极大的兴趣。鉴于此，目前的研究工作重点是利用可再生的、易获取的茶叶废弃物可持续合成生态友好型生物膜。合成了由不同量的茶叶废料（0、2、4、6、8和10 g）以及玉米淀粉、增塑剂和柠檬酸组成的各种生物膜，并根据它们的功能、形态和热行为进行了比较。利用傅里叶变换红外光谱、热重分析、扫描电镜和x射线衍射分析对合成的生物膜进行了检测。结果表明，该生物膜（样品BF-4）由茶渣粉和玉米淀粉以3:2的比例组成，与其他生物膜相比，其裂缝和沟槽较少，具有更多的无定形特征。所制备的生物膜具有可生物降解性，并具有抗大肠杆菌、金黄色葡萄球菌和黄曲霉等微生物的抗菌特性。从茶叶废料中开发生物膜为可持续包装材料提供了一条有前途的途径。利用天然丰富的资源，如茶叶废料，不仅可以减少浪费，而且还具有成本低、环保、节能和可生物降解等一系列好处。此外，茶废料中固有的抗菌特性有助于包装商品的保存，延长其保质期。图形抽象

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引用次数: 0

Development of polyvinyl chloride composites with enhanced mechanical properties using modified ceramic particles 改性陶瓷颗粒增强聚氯乙烯复合材料的研制

IF 2.8 3区化学 Q3 POLYMER SCIENCE

Iranian Polymer Journal

Pub Date : 2025-02-05 DOI: 10.1007/s13726-025-01454-6

Adewumi Ojo Ademola, Isiaka Oluwole Oladele, Daramola Ojo Oluyemi, Samuel Ranti Oke, Ilesanmi Akinbamiyorin, Annuoluwapo Samuel Taiwo

The integration of ceramic particles into polyvinyl chloride (PVC) composites offers a promising approach and has garnered significant attention due to their potential for enhancing mechanical properties. This work investigated the development and characterization of PVC composites enhanced with modified ceramic particles. Ceramic particulates, clays, and other mineral rock materials (non-plastics) with activators were processed and incorporated into the PVC matrix at varying weight percentages (5–30 wt%) and particle sizes (40–80 µm). The ceramic–PVC mixtures were synthesized using hot compression molding under specific conditions of 75 MPa pressure and 160 °C temperature. Mechanical properties’ testing was conducted using ASTM D3039 standards, covering flexural, tensile, hardness, and impact tests for comprehensive characterization. Microstructural analysis was performed using scanning electron microscopy (SEM). Results indicated that ceramic reinforcement significantly enhanced the mechanical properties of PVC composites, with notable improvements in flexural strength, tensile strength, hardness, and impact resistance. Moreover, the impact of particle size was crucial, as microstructural analysis revealed improved interfacial bonding between ceramic particles and PVC matrix, particularly with finer particle sizes (40 µm), suggesting better stress transfer. The findings demonstrated that including modified ceramic particles can substantially improve the performance of PVC composites, making them suitable as high-strength construction tiles and impact-resistant flooring.

Graphical abstract

将陶瓷颗粒集成到聚氯乙烯（PVC）复合材料中提供了一种很有前途的方法，并且由于其提高机械性能的潜力而引起了极大的关注。本文研究了改性陶瓷颗粒增强聚氯乙烯复合材料的研制和性能。带有活化剂的陶瓷颗粒、粘土和其他矿物岩石材料（非塑料）经过处理，并以不同的重量百分比（5-30 wt%）和粒径（40-80µm）加入PVC基质中。在压力为75 MPa、温度为160℃的特定条件下，采用热压成型技术合成了陶瓷- pvc混合物。机械性能测试采用ASTM D3039标准进行，包括弯曲、拉伸、硬度和冲击测试，以进行综合表征。采用扫描电镜（SEM）进行显微结构分析。结果表明，陶瓷增强剂能显著提高PVC复合材料的力学性能，在抗弯强度、抗拉强度、硬度和抗冲击性能等方面均有显著提高。此外，颗粒尺寸的影响是至关重要的，微观结构分析显示陶瓷颗粒与PVC基体之间的界面结合得到改善，特别是颗粒尺寸更细（40µm），表明应力传递更好。研究结果表明，加入改性陶瓷颗粒可以大大提高PVC复合材料的性能，使其适用于高强度建筑瓷砖和抗冲击地板。图形抽象

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引用次数: 0

Polydopamine-assisted zirconium-based metal–organic frameworks@enzyme composite modification of polyethylene terephthalate fibers to form anti-adhesive surfaces 聚多巴胺辅助锆基金属-有机frameworks@enzyme复合改性聚对苯二甲酸乙二醇酯纤维形成抗粘表面

IF 2.8 3区化学 Q3 POLYMER SCIENCE

Iranian Polymer Journal

Pub Date : 2025-02-05 DOI: 10.1007/s13726-025-01456-4

Jinlong Gao, Qianru Dong, Hong Li, Xiaofeng Liu, Na Gu, Haixia Wu

The process of bacterial adhesion and subsequent biofilm formation is a global challenge in terms of health and economy. In this study, we employed a simple impregnation method to achieve antibacterial adhesion on polyethylene terephthalate (PET) fabric. The metal–organic frameworks (MOF)@enzyme composites demonstrated firmly attached adhesion to the PET fabric surface due to the exceptional adhesion properties of dopamine (DA). The surface morphology and microstructure of the modified PET fiber were analyzed using scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS), X-ray diffractometry (XRD), X-ray photoelectron spectroscopy (XPS), Fourier transform infrared spectroscopy (FTIR) technologies, and a water contact angle test. The results showed that MOF@enzyme nanoparticles were deposited on the fiber surface, resulting in significant changes in the surface morphology of the modified fibers. The surface hydrophilicity was also increased with the reduction of the water contact angle from 112.5° to 36.2°. The PET fabric coated with the MOF enzyme complex exhibits significant antibacterial adhesion capabilities against Staphylococcus aureus (S. aureus) and Escherichia coli (E. coli). In addition, the modified PET fabric demonstrated excellent storage stability, maintaining an anti-adhesion rate of over 70% even after 30 days of storage. Moreover, the rate of erythrocyte hemolysis is less than 2.5%, indicating that the fabric exhibits excellent blood compatibility and biocompatibility. This study provides a novel approach for the biomedical application of PET fabrics.

Graphical abstract

细菌粘附和随后形成生物膜的过程是一个全球性的挑战，在健康和经济方面。在本研究中，我们采用一种简单的浸渍方法来实现对聚对苯二甲酸乙二醇酯（PET）织物的抗菌粘附。由于多巴胺（DA）的特殊粘附性能，金属有机框架（MOF）@酶复合材料在PET织物表面表现出牢固的粘附性。采用扫描电子显微镜（SEM）、x射线能谱（EDS）、x射线衍射（XRD）、x射线光电子能谱（XPS）、傅里叶变换红外光谱（FTIR）技术和水接触角测试对改性PET纤维的表面形貌和微观结构进行了分析。结果表明：MOF@enzyme纳米颗粒沉积在纤维表面，使改性纤维表面形貌发生了显著变化。水接触角由112.5°减小到36.2°，表面亲水性增强。MOF酶复合物包被的PET织物对金黄色葡萄球菌（S. aureus）和大肠杆菌（E. coli）表现出明显的抗菌粘附能力。此外，改性后的PET织物表现出优异的储存稳定性，即使在储存30天后，其抗粘附率仍保持在70%以上。红细胞溶血率小于2.5%，表明织物具有良好的血液相容性和生物相容性。本研究为PET织物的生物医学应用提供了一条新的途径。图形抽象

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引用次数: 0

Tertiary amine-modified graphene oxide for reinforcing anhydride-cured cardanol-based epoxy resin 叔胺改性氧化石墨烯增强酸酐固化腰果酚基环氧树脂

IF 2.8 3区化学 Q3 POLYMER SCIENCE

Iranian Polymer Journal

Pub Date : 2025-02-04 DOI: 10.1007/s13726-024-01445-z

Xin Zhang, Lingxiao Jia, Wenjing Wang, Haichao Zhao

Graphene oxide (GO) has emerged as ideal reinforced nanofillers in epoxy-based composites, but suffering from poor dispersion because of its high hydrophilicity, and poor compatibility with polymeric matrix which hinders its further application. In this study, a novel tertiary amine-containing compound (C-DEA) was synthesized by the reaction of diethanolamine with C12-C14 alkyl glycidyl ether, then C-DEA was used to modify GO by ionic interaction, thus GO-CDEA was obtained. Moreover, the effect of GO-CDEA content on mechanical and thermal properties of cashew phenol epoxy composite were investigated. Compared to pure epoxy resin (EP), the cashew nut phenol-based nanocomposites (0.2% (by weight) GO-CDEA) perform exceptionally excellent mechanical properties: the rupture strength is 13.76 MPa (73% higher than EP), the Young's modulus is 1049.38 MPa (201% higher than EP), and the elongation-at-break is 138.14% (145% higher than EP). The improved mechanical properties are attributed to the synergistic effect of C-DEA and well-dispersed GO nanosheets, which not only increased the crosslinking density, but also impeded the extension of cracks. Additionally, this novel GO-CDEA-reinforced bio-based renewable cashew phenol epoxy proves to be an ideal candidate for toughening epoxy-based thermosetting materials, showcasing the potential application of bio-based epoxy composite materials.

Graphical abstract

氧化石墨烯（GO）是环氧基复合材料中理想的纳米增强填料，但由于其亲水性高，分散性差，与聚合物基体的相容性差，阻碍了其进一步应用。本研究以二乙醇胺和C12-C14烷基缩水甘油醚为原料，合成了一种新型的叔胺类化合物（C-DEA），然后用C-DEA对氧化石墨烯进行离子作用修饰，得到了GO- cdea。研究了GO-CDEA含量对腰果酚环氧复合材料力学性能和热性能的影响。与纯环氧树脂（EP）相比，腰果酚基纳米复合材料（0.2%（重量比）GO-CDEA）具有优异的力学性能：断裂强度为13.76 MPa（比EP高73%），杨氏模量为1049.38 MPa（比EP高201%），断裂伸长率为138.14%（比EP高145%）。C-DEA和分散良好的氧化石墨烯纳米片的协同作用不仅增加了交联密度，而且阻碍了裂纹的扩展，从而改善了材料的力学性能。此外，这种新型的go - cdea增强生物基可再生腰果酚环氧树脂被证明是增韧环氧基热固性材料的理想候选者，展示了生物基环氧复合材料的潜在应用前景。图形抽象

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引用次数: 0

Graphene nanoplatelets inclusion effects on mechanical properties of hybrid carbon/glass composites 石墨烯纳米片夹杂物对碳/玻璃复合材料力学性能的影响

IF 2.8 3区化学 Q3 POLYMER SCIENCE

Iranian Polymer Journal

Pub Date : 2025-02-02 DOI: 10.1007/s13726-025-01457-3

Ahmet Erkliğ, Mehmet Bulut, Bashar Rida Younus Al-Ogaidi

The incorporation of nanoparticles into hybrid carbon/glass composites significantly enhances their mechanical properties, making them suitable for various engineering applications. The primary aim of this study was to examine the effects of graphene nanoparticles (GNPs) on the mechanical and Charpy impact characteristics of carbon fiber/epoxy, glass fiber/epoxy, and their hybrid composite laminates across various laminate configurations. GNPs were uniformly dispersed in the epoxy matrix at different weight fractions of 0.1%, 0.25% and 0.5% (by weight). Experimental assessments encompassing flexural, tensile, and Charpy impact evaluations were carried out both with/without the incorporation of GNPs as reinforcing agents in the fabricated specimens. This research indicated that even a small addition of GNPs could lead to substantial improvements in tensile strength, flexural strength, and impact resistance due to better interfacial bonding between the fibers and the epoxy matrix. Upon introducing GNPs at a loading level of 0.1% (by weight), the experimental findings demonstrated a notable enhancement in the mechanical and impact properties of the hybrid composite laminates as a result of integrating GNPs into the epoxy matrix. This increase in strength can be attributed to the development of a strong interfacial bond among the fibers, epoxy, and GNPs leading to better load transferring from the matrix to the fibers.

Graphical abstract

将纳米颗粒掺入碳/玻璃复合材料中可以显著提高其机械性能，使其适用于各种工程应用。本研究的主要目的是研究石墨烯纳米颗粒（GNPs）对碳纤维/环氧树脂、玻璃纤维/环氧树脂及其混合复合材料层压板在不同层压结构下的力学和夏比冲击特性的影响。GNPs以0.1%、0.25%和0.5%（重量比）的质量分数均匀分散在环氧基体中。实验评估包括弯曲、拉伸和夏比冲击评估，在制造的样品中加入/不加入GNPs作为增强剂都进行了评估。这项研究表明，即使是少量的GNPs添加也可以显著提高纤维的抗拉强度、弯曲强度和抗冲击性，因为纤维和环氧基之间的界面结合更好。在0.1%（重量）的加载水平下，实验结果表明，由于将GNPs整合到环氧基体中，混杂复合材料层合板的机械性能和冲击性能显著增强。这种强度的增加可归因于纤维、环氧树脂和GNPs之间形成了强大的界面键，从而更好地将载荷从基体传递到纤维。图形抽象

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引用次数: 0

A novel DOPO-AS/M(OH)(OCH3) organic/inorganic nanohybrid for enhancing the flame retardancy and mechanical properties of epoxy 一种新型DOPO-AS/M(OH)（OCH3）有机/无机纳米杂化材料，用于增强环氧树脂的阻燃性和力学性能

IF 2.8 3区化学 Q3 POLYMER SCIENCE

Iranian Polymer Journal

Pub Date : 2025-01-28 DOI: 10.1007/s13726-025-01455-5

Qiancheng Duan, Xiang Dong, Zhiyu Sun, Guowei Dai, De-long Li, Le Xie, Song Liu

A novel multifunctional flame-retardant DOPO-AS/M(OH)(OCH₃) (M = Co, Ni) was synthesized and incorporated into epoxy resin (EP) to prepare EP composites with enhanced flame retardancy and mechanical properties. Specifically, the DOPO-AS was synthesized using 3-aminopropyltriethoxysilane (APTES), salicylaldehyde (Salal), and 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO). The 2D nanosheet M(OH)(OCH₃) was surface modified with DOPO-AS, thereby synthesizing the organic/inorganic nanohybrid DOPO-AS/M. The results showed that the addition of only 5% (by wt) DOPO-AS/M enabled EP to achieve the UL-94 of V-1 rating, with the limiting oxygen index (LOI) increasing from 28.7% to 31.0%. The thermogravimetric analysis (TGA) results demonstrated that the EP/DOPO-AS/M composite exhibited a significant enhancement in thermal stability compared to pure EP. Meanwhile, EP/DOPO-AS/M 5% composite showed significant reduction of 48.1%, 14.7%, 30.9%, and 22.7% in the peak heat release rate (pHRR), total heat release (THR), smoke production rate (SPR), and total smoke production (TSP), respectively. In addition, the tensile strength and elongation-at-break of the EP composite with 1% (by wt) DOPO-AS/M were increased by 13.5% and 3.2%, compared with pure EP. This work provides a novel and facile strategy for the simultaneous enhancement of flame retardancy and mechanical properties in EP composites, showing promising potential for practical applications.

Graphical Abstract

合成了一种新型多功能阻燃剂DOPO-AS/M(OH)(OCH3) (M = Co, Ni)，并将其掺入环氧树脂（EP）中，制备了具有增强阻燃性能和力学性能的EP复合材料。具体来说，DOPO- as是由3-氨基丙基三乙氧基硅烷（APTES）、水杨醛（Salal）和9,10-二氢-9-氧-10-磷菲-10-氧化物（DOPO）合成的。用DOPO-AS对二维纳米片M(OH)（OCH3）进行表面修饰，合成了有机/无机纳米杂化材料DOPO-AS/M。结果表明，添加5% (wt) DOPO-AS/M后，EP达到V-1级UL-94，极限氧指数（LOI）由28.7%提高到31.0%。热重分析（TGA）结果表明，与纯EP相比，EP/DOPO-AS/M复合材料的热稳定性有显著提高。EP/DOPO-AS/M 5%复合材料的峰值放热率（pHRR）、总放热率（THR）、产烟率（SPR）和总产烟率（TSP）分别降低了48.1%、14.7%、30.9%和22.7%。此外，与纯EP相比，添加1% DOPO-AS/M的EP复合材料的拉伸强度和断裂伸长率分别提高了13.5%和3.2%。这项工作为同时增强EP复合材料的阻燃性和力学性能提供了一种新颖而简便的策略，具有良好的实际应用潜力。图形抽象

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