改性淀粉/PVA生物降解材料性能的研究

Study on the Blends of Modified Starch/PVA

摘要: 以BPO为引发剂、正庚烷为溶剂在66℃下制得马来酸酐接枝淀粉。将其与聚乙烯醇(PVA)、增塑剂及加工助剂等于HAAKE密炼机中共混，制备了可生物降解热塑性淀粉塑料。研究了接枝改性淀：粉／PVA共混物的力学性能、生物降解性能及热性能等，并用SEM研究了共混物的微观形态。结果表明接枝改性淀粉／PVA共混物拉伸强度为27．57Mpa，60d失重率达65．1％。

Abstract: Maleic anhydride-g-starch copolymer was synthesized by graft copolymerization of starch with maleic anhydride using BPO as initiator and heptane as reaction medium. The blends of maleie anhydride-g-starch and PVA were prepared by the HAAKE. Using X-ray di