淀粉高填充改性PBAT体系的力学及流变学性能  

Mechanical and Rheological Properties of Highly Filled Starch /PBAT System

作　　者：许颖[1] 杨冰[1] 刘军[1] 张长安[1] 王小威[1] 张维[1] 李丹[1] 季君晖[1] 

机构地区：[1]工程塑料国家工程研究中心,中国科学院理化技术研究所,北京100190

出　　处：《塑料》2014年第1期22-26,共5页Plastics

摘　　要：采用淀粉对PBAT进行高填充改性,研究了淀粉添加量及偶联剂使用量对体系力学性能、流变性能及相容性的影响。偶联剂的使用能提高填充体系的拉伸强度,但大幅降低其断裂伸长率;以振幅扫描和频率扫描2种模式研究了体系储能模量、损耗模量、线性黏弹区、内耗值、黏度等流变学参数,并进一步使用cole-cole图研究了体系的相容性,结果表明:流变学研究可为配方和加工条件的选择提供依据。PBAT was highly filled with starch, the effect of starch amount and coupling agent dosage on mechanical and rheological properties of this system was studied. Coupling agent could increase the tensile strength, while greatly decreased the elongation at break storage modules, loss modulus, linear viscoelastic region, damping value, viscosity were studied in amplitude mode and frequency mode separately. Further more, the compatibility of system was studied with cole-cole plot. Results indicated that the study of rheology could provide basis for the determine of formulation and machining parameter.

关 键 词：高填充改性 力学性能 流变性能 cole—cole图 相容性 

分 类 号：TQ323.41[化学工程—合成树脂塑料工业]