GMA接枝反应PLA及其对竹纤维／PLA复合材料的增容效应  

Glycidyl Methacrylate Grafted onto Polylactic Acid Improving the Interfacial Compatibility of Bamboo Fiber/Polylactic Acid Biomass Composites

作　　者：赵升云 龚新怀 王兆礼 付兴平 赵晓杰 戴忠豪 刘杭忠 柯鸿微 ZHAO Sheng-yun;GONG Xin-huai;WANG Zhao-li;FU Xing-ping;ZHAO Xiao-jie;DAI Zhong-hao;LIU Hang-zhong;KE Hong-wei(Ecology and Resources Engineering College,Wuyi University,Fujian Provincial Bamboo Engineering Technology Reserach Center,Fujian Provincial Key Laboratory of Eco-Industrial Green Technology,Wuyishan 354300,China)

机构地区：[1]武夷学院生态与资源工程学院,福建省竹材工程技术研究中心,福建省生态产业绿色技术重点实验室,武夷山354300

出　　处：《高分子通报》2018年第11期60-67,共8页Polymer Bulletin

基　　金：福建省科技厅项目(2016H0031,2018J01445);福建省中青年教师教育科研项目(JATl70594,JTl80555);福建省教育厅JK项目(JATl60503);福建省大学生创新训练项目(201710397032);福建省生态产业绿色技术重点实验室项目(WYKF2018-5);南平市科技计划项目(N2015H02);武夷学院科研项目(XD201501)

摘　　要：为改善竹纤维(bamboo fiber, BF)与聚乳酸(polylactic acid, PLA)的界面相容性,以过氧化二异丙苯(DCP)为引发剂,采用熔融反应制备了甲基丙烯酸缩水甘油酯接枝聚乳酸(GMA-g-PLA, GPLA)高分子增容剂,考察了GPLA添加对BF/PLA复合材料结构与性能的影响,并与常用界面改性剂硅烷偶联剂(KH550)和异氰酸酯偶联剂(MDI)进行了比较。结果显示,GPLA添加对BF/PLA复合材料具有良好的界面增容和性能改善作用,其增容效果明显高于KH550和MDI,并在其占复合材料的质量分数为16%时,复合材料力学性能最佳。与未增容复合材料相比,其拉伸、弯曲及缺口冲击强度分别提高了72.1%、118.1%和81.6%,断裂伸长率提高了200.0%,维卡软化点提高28.4%,而浸水24h后吸水率下降31.6%。To enhance the interfacial compatibility between bamboo fiber （BF） and polylactic acid（PLA）, the copolymer of PLA grafted with glycidyl methacrylate （GMA-g-PLA, GPLA） was synthesized by melt grafting approach using dicumyl peroxide as initiator, the influences of GPLA addition on the interracial morphology and properties of BF/PLA composites were investigated, and the interfacial compatibilization effect of GPLA was compared with silane coupling agent（KH550） and MDI. The result showed that, the GPLA showed great interracial compatibilization and properties improvement for the BF/PLA composites, which was much better than the compatibilization efficiency by using MDI or KH550. The BF/PLA composites with 16% mass fraction of GPLA （towards the composites） provided the optimum properties, with an improvement of72.10% in tensile strength, 118.1% in flexural strength, 81.6% in notched impact strength, 200% in elongation at break and 28.39% in vicar softing point respectively, and a decrease of 31.6% in water adsorption compared with those without GPLA.

关 键 词：竹纤维 聚乳酸 接枝反应 增容效应 

分 类 号：TQ317[化学工程—高聚物工业] TB332[一般工业技术—材料科学与工程]