采用熔融共混和模压成型工艺制备了马来酸酐接枝聚烯烃弹性体(EOC-g-MAH)共混增韧聚乳酸/中空玻璃微珠(PLA/HGB)复合材料,考察了EOC-g-MAH的质量分数对复合材料的微观结构、力学性能和热稳定性的影响.结果表明,EOC-g-MAH的引入促进了基体对HGB的表面润湿,显著增强了两者的界面结合.随EOC-g-MAH的含量增加,PLA/HGB复合材料的拉伸强度先上升后降低,并在含量为3％时达到最大值,较未改性体系提高了14.23％,而弹性模量持续下降.在0～9％内,PLA/HGB复合材料的冲击韧性先急剧上升而后趋缓,当EOC-g-MAH的添加量为7％时,即可使增韧体系的冲击韧性提高近40％,表明EOC-g-MAH更有利于提高PLA/HGB复合材料的抗冲击性能.EOC-g-MAH的引入使复合体系的热分解过程由一阶失重转变为两阶失重,但对热分解温度几乎没有影响.
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