PBAT/PLA共混体系增容改性研究

Study on Compatibilization of PBAT/PLA Blends

目前,学者们对PLA/PBAT共混体系进行了无机填料改性和有机改性两大具体方面,并研究了改性后共混体系的各种性能。研究发现无机填料的加入可以使PLA/PBAT体系的结晶度得到提高,改善结晶能力和热性能等。扩链剂则明显提高了PLA/PBAT共混物的拉伸强度,增强了机械性能。添加增容剂不仅可以提高体系的兼容性,还有利于形成稳定的化学键,加强两相之间的界面粘接力和界面强度,同时增强了共混体系的协同作用,使材料的综合性能得到进一步提升。

At present,the PLA/PBAT blends have been modified by inorganic fillers and organic fillers,and their properties have been studied.It is found that the addition of inorganic fillers can improve the crystallinity,crystallization ability and thermal properties of PLA/PBAT system.The tensile strength and mechanical properties of PLA/PBAT blends were improved by chain extender.The addition of compatibilizer can not only improve the compatibility of the system,but also help to form stable chemical bond,strengthen the interfacial adhesion force and interface strength between the two phases,and enhance the synergistic effect of the blend system,so as to further improve the comprehensive properties of the material.