乙酰淀粉／PBS／PVA共混体系流变性能及力学性能研究  

Study on Rheological Property and Mechanical Property of Acetyl Starch/PBS/PVA Blend

作　　者：李志庭[1] 张世奇[1] 郭绍强[1] 秦江雷[1] 高俊刚[1] 

机构地区：[1]河北大学化学与环境科学学院,河北保定071002

出　　处：《塑料科技》2008年第10期52-56,共5页Plastics Science and Technology

摘　　要：采用转矩流变仪模拟了乙酰淀粉/聚丁二酸丁二醇酯(PBS)/聚乙烯醇(PVA)三元共混体系的挤出加工过程,考察了PBS/PVA比例、增塑剂、转速、温度对共混体系转矩流变性能的影响;通过电子扫描显微镜观察了共混物的表面形态,并进行了力学性能表征。结果表明:在160℃、转速15r/min条件下,每50phr乙酰淀粉加入10phr甘油、30phrPVA和10phrPBS,共混体系具有较好的流变性能;PVA和PBS的适量加入可有效改善共混物的力学性能。The extruding process of acetyl starch/polyvinyl alcohol （PVA）/ polybutylene auccinate （PBS） blend was simulated by torque rheometer. The effects of PBSl PVA ratio, plasticizer, rotation speed, temperature on the rheological property of the blend were investigated. The surface morphology of the blend was observed by SEM. The results indicate： when temperature is 160℃, rotation speed is 15r/min, adding 10 phr glycerine, 30 phr PVA, and 10 phr PBS into 50 phr acetyl starch, the rheological property of the blend is excellent; the addition of proper amount of PVA and PBS could improve the mechanical property of the blend.

关 键 词：乙酰淀粉 聚丁二酸丁二醇酯 聚乙烯醇 转矩流变试验 力学性能 

分 类 号：TQ321.2[化学工程—合成树脂塑料工业]