Poly(glycidyl Methacrylate) Grafted to Carbon Fiber Surface by RAFT Polymerization for Enhancing Interface Adhesion and Mechanical Properties of Carbon Fiber/Epoxy Composites
Poly(glycidyl Methacrylate) Grafted to Carbon Fiber Surface by RAFT Polymerization for Enhancing Interface Adhesion and Mechanical Properties of Carbon Fiber/Epoxy Composites
复制标题
通过RAFT聚合将聚甲基丙烯酸缩水甘油酯接枝到碳纤维表面以增强碳纤维/环氧复合材料的界面粘合力和机械性能
DOI：
10.1177/096739111702500115
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发表时间：
2017-01-01
影响因子：
2.1
通讯作者：
Cao, Zhiyuan
中科院分区：
文献类型：
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作者：
Lan, Daosong;Xiong, Lei;Cao, Zhiyuan
在这项研究中，我们提出了一种通过可逆加成-破碎链转移（RAFT）聚合将大量聚甲基丙烯酸甘油酯（PGMA）链接枝到碳纤维（CF）表面的新方法。FT-IR、XPS和TGA表征结果表明，PGMA与碳纤维共价结合。在环氧树脂中加入原始CF和聚甲基丙烯酸缩水甘油酯（CF- pgma）功能化的CF，制备了CF/环氧复合材料。实验结果表明，PGMA链接枝可显著提高CF表面的粗糙度和活性基团数量，增强复合材料的界面性能和力学性能。与原始碳纤维/环氧复合材料相比，CF-PGMA/环氧复合材料的抗压强度、抗拉强度、抗弯强度和界面抗剪强度分别提高了63.1%、37.9%、55.6%和122.5%。这表明RAFT技术对碳纤维进行表面改性是制备具有优异力学性能的碳纤维增强聚合物基复合材料的一种有潜力的方法。
In this study, we present a novel approach to graft a large number of poly(glycidyl methacrylate) (PGMA) chains onto the carbon fiber (CF) surface through reversible addition-fragmentation chain transfer (RAFT) polymerization. Characterization results of FT-IR, XPS and TGA demonstrated that PGMA was covalently combined with carbon fibers. The CF/epoxy composites were obtained by addition of pristine CF and CF functionalized with poly(glycidyl methacrylate) (CF-PGMA) into epoxy resin. Experiment results revealed that the grafting of PGMA chains on the CF surface could increase significantly roughness and number of active groups of CF, which enhanced interface and mechanical properties of the composites. The compression strength, tensile strength, flexural strength and interfacial shear strength (IFSS) of CF-PGMA/epoxy composites are enhanced by at least 63.1%, 37.9% 55.6% and 122.5%, respectively, compared to pristine carbon fiber/epoxy composites. This enhancement indicates that surface modification of the carbon fibers by RAFT technique is a potential method to preparing CF-reinforced polymer matrix composites with excellent mechanical properties.