摘要
通过双螺杆挤出机制备了聚乳酸/聚己二酸-对苯二甲酸丁二酯/甲基丙烯酸甲酯-有机硅-苯乙烯(PLA/PBAT/S-2001)共混物,采用扫描电子显微镜、旋转流变仪和电子万能试验机等表征手段研究了不同含量S-2001对共混体系微观结构、流变行为和力学性能的影响。结果表明,S-2001能够降低共混体系中分散相颗粒尺寸,改善界面黏结力,提高体系的储能模量、损耗模量和复数黏度,增强马拉哥尼应力松弛;当S-2001添加量为9份(质量份,下同)时,材料的缺口冲击强度从5.8kJ/m^2上升至40.4kJ/m^2,提高了596.6%;S-2001具有增韧增容双重效果。
PLA/PBAT/methyl methacrylate-silicone-styrene copolymer(S-2001)blends were prepared by melt extrusion with a twin-screw extruder,and the effect of S-2001content on the microstructure,rheological behavior and mechanical properties of the blends were investigated by using a scanning electron microscope,rotational rheometer and electronic universal testing machine.The results indicated that the addition of S-2001reduced the size of dispersed particles but improved the interfacial adhesion between the PLA and PBAT phases.Furthermore,the storage modulus,loss modulus and complex viscosity of the blends were also improved,and their Marangoni stress relaxation was enhanced gradually.When the9phr of S-2001was incorporated into the blends,the notched impact strength increased by596.6%from5.8kJ/m^2to40.4kJ/m^2,suggesting that S-2001acts as an impact modifier as well as a compatibilizing agent.
作者
徐晓榕
夏新曙
黄宝铨
林鸿裕
杨裕金
陈庆华
肖荔人
XU Xiaorong;XIA Xinshu;HUANG Baoquan;LIN Hongyu;YANG Yujin;CHEN Qinghua;XIAO Liren(College of Environmental Science and Engineering,Fujian Normal University, Fuzhou 350007,China;Fujian Key Laboratory of Pollution Control and Resource Reuse, Fuzhou, 350007,China;College of Chemistry and Meterials Science,Fujian Normal University,Fuzhou 350007,China)
出处
《中国塑料》
CAS
CSCD
北大核心
2018年第12期26-33,共8页
China Plastics
基金
福建师范大学泉港石化研究院专项资金项目(2016YJY20)
关键词
聚乳酸
聚己二酸对苯二甲酸丁二酯
相容性
相形态
界面张力
马拉哥尼应力
polylactide
poly(adipate butylen-co-eterephthalate)
compatibility
morphology
interfacial tension
Marangoni stresses
