改性PCL对热塑性淀粉/PCL共混体系性能的影响  

Effects of Modified Polycaprolactone on Properties of TPS/PCL Blends

作　　者：冀玲芳[1] 李树材[1] 

机构地区：[1]天津科技大学理学院,天津300222

出　　处：《中国塑料》2004年第5期56-59,共4页China Plastics

摘　　要：制备了改性聚己内酯 (MPCL) ,在PCL 5上引入具有反应活性的基团 (均苯四甲酸酐 ) ,使PCL 5的极性增加并可以与淀粉上的羟基反应 ,探讨了MPCL对TPS/PCL共混体系增容作用及其对共混体系的力学性能、耐水性及生物降解性的影响。结果表明 :共混体系中加入一定量MPCL后提高了共混体系的拉伸强度 ,但使断裂伸长率略微下降 ;同时改善了体系的耐水性 ,吸水率下降 ,湿强度R值则增加 ;还能有效改善体系的相容性 ,并且不影响体系的生物降解性。A pyromellitic anhydride modified PCL (MPCL) was introduced into blends of thermoplastic starch (TPS) and polycaprolactone (PCL).The effect of MPCL on the mechanical properties,water-resistance,water adsorption,and bio-degradability of the system was systematically investigated.The results show that the addition of some MPCL into the system improved the tensile strength but slightly lower the elogation at break.Simultaneously,the water resistance became better while the water adsorption went down and the wet strength R increased.SEM revealed that the blend was compatibilized by MPCL.

关 键 词：淀粉 聚己内酯 相容性 生物降解性 

分 类 号：TQ321[化学工程—合成树脂塑料工业]