反应性增容制备高性能PLA/PA11共混物  

Reactive Compatibilization to Prepare High Performance PLA/PA11 Blends

作　　者：余晓磊 徐长福 王鑫 周为夷 彭少贤 赵西坡 YU Xiaolei;XU Changfu;WANG Xin;ZHOU Weiyi;PENG Shaoxian;ZHAO Xipo(Collaborative Innovation Center of Green Light-weight Materials and Processing,Hubei Provincial Key Laboratory of Green Materials for Light Industry,School of Materials and chemical Engineering,Hubei University of Technology,Wuhan,Hubei 430068,China)

机构地区：[1]湖北工业大学,材料与化学工程学院,绿色轻工材料湖北省重点实验室,绿色轻质材料与加工协同创新中心,湖北武汉430068

出　　处：《塑料》2020年第3期28-31,35,共5页Plastics

基　　金：国家自然科学基金(51273060);湖北省教育厅重点项目(2012BAA12005)。

摘　　要：由于聚乳酸(PLA)与尼龙11(PA11)的相容性较差,因此,利用熔融接枝法制备了PLA与甲基丙烯酸缩水甘油酯(GMA)的接枝物PLA-g-GMA,并充当共混物的增容剂。在共混的过程中,利用增容剂原位反应性,增容PLA与PA11的共混体系。对共混物进行力学性能测试,结果表明,在没有添加增容剂的条件下,共混物的力学性能较差;随着接枝物的加入,共混物的力学性能显著提高。在PLA/PA11(80/20)组分中,当增容剂的含量达到20%时,共混物的断裂伸长率和拉伸强度均达到了最大值分别为281. 14%、53. 16 MPa,且材料抗冲击性能也有一定的改善,与纯PLA相比,增加了132%。Due to the poor compatibility between polylactic acid(PLA)and nylon 11(PA11),the compatibilizer of PLA grafting GMA(PLA-g-GMA)was prepared by melt grafting.In the process of blending,the compatibilizer in-situ reactively compatibilized the blend of PLA and PA11.Through the mechanical property test,the blends without compatibilizer performance was reduced because of the compatibility problems.But with the addition of the compatibilizer,the mechanical properties of the blends shown a significant improvement.When the content of the compatibilizer reached 20%in the PLA/PA11(80/20)component,the elongation at break and the tensile strength of the blends reached a maximum of 281.14%and 53.16 MPa,respectively.Moreover,the impact resistance of the blends had also been improved,which was 132%higher than that of neat PLA.

关 键 词：聚乳酸 尼龙11 甲基丙烯酸缩水甘油酯 反应性增容 共混增韧 

分 类 号：TQ323.4[化学工程—合成树脂塑料工业]