聚β-羟基丁酸酯顺丁烯二酸酐接枝共聚物的研究  

STUDY ON THE PROPERTIES OF POLY( β-HYDROXYBUTYRATE) GRAFTED WITH MALEIC ANHYDRIDE

作　　者：陈成[1] 彭树文[1] 费宾[1] 安玉贤[1] 庄宇刚[1] 董丽松[1] 冯之榴[1] 陈珊[2] 夏红梅[2] 

机构地区：[1]中国科学院长春应用化学研究所高分子物理和化学国家重点实验室,长春130022 [2]东北师范大学生命科学学院,长春130021

出　　处：《高分子学报》2001年第4期450-454,共5页Acta Polymerica Sinica

基　　金：国家自然科学基金资助项目 (基金号 2 97740 3 1)

摘　　要：采用DSC、TGA、POM和WAXD等方法对聚 β 羟基丁酸酯 (PHB)及其接枝顺丁烯二酸酐共聚物 (PHB g MA)的结晶行为、热稳定性和生物降解特性进行了研究 .结果表明接枝产物的热稳定性明显优于PHB ,热分解温度提高了 2 0余度 ;结晶行为发生很大的变化 .结晶速率减小 ,结晶温度降低 ,冷结晶温度升高 ,球晶的织态结构也随着MA接枝量的变化发生明显变化 。The thermal stability,crystallization behavior and biodegradability of poly( β hydroxybutyrate) (PHB) grafted with maleic anhydride (MA) were studied by DSC,TGA,optical microscopy and WAXD.The results showed that thermal stability of maleated PHB was obviously improved,comparing with that of pure PHB.The temperature of decomposition was enhanced about 20℃.After grafting MA,the crystallization behavior of PHB changed evidently.The rate of spherulite growth decreased,the crystallization temperature from the melt state reduced,and the cold crystallization temperature from the glass state increased.With the increase in graft degree,the banding texture of spherulite became more distinct and orderly.Moreover,the introduction of MA groups promoted the biodegradation of PHB.

关 键 词：聚β-羟基丁酸酯酯 顺丁烯二酸酐 接枝共聚物 表面接枝改性 热稳定性 生物降解 

分 类 号：O631[理学—高分子化学]