摘要
本文讨论了聚β－羟基丁酸酯／聚ε－己内酯（ＰＨＢ／ＰＣＬ）、聚β－羟基丁酸酯／聚ε－己内酯－聚乙二醇嵌段共聚物（ＰＨＢ／ＰＥＣＬ）共混体系的相容性、结晶性、形态结构及断裂在面形貌。ＰＨＢ／ＰＣＬ体系是不相容的，ＰＨＢ、ＰＣＬ的结晶度随共混组成而改变。ＳＥＭ结果表明，ＰＨＢ／ＰＣＬ共混膜断裂表面呈韧性断裂特征，ＰＨＢ的脆性得到改善，ＰＨＢ／ＰＥＣＬ，共混体系的相容性有所改善。
Studies were conducted on the miscibility, crystallization and phase structure of poly(β-hydroxybutyrate)/poly (ε-caprolactone)(PHB/PCL) and poly(β-hydroxybutyrate)/poly(ε-caprolactone)-co-poly(ethylene glycol)(PHB/PECL) blends.The PHB/PCL blends were immiscible.The crystallization of PHB, PCL in the blends showed significant change,and the blends proved to be more fracture toughness than the plain PHB.The miscibility of PHB/PECL blends were improved by using PECL as second component,and the PHB/PECL blends exhibited a quite different morphology from the PHB/PCL blends.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
1994年第1期64-68,共5页
Polymer Materials Science & Engineering
关键词
生物降解
共混
聚酯
PHB
PCL
PECL
s:biodegradable, polymer blend, miscibility, crystallization behavior, morphology,poly(β-hydroxybutyrate), poly (ε-caprolactone),poly (ε-caprolactone)-co-poly(ethylene glycol).
