【作者】 江献财； 叶德展； 代华； 张熙；

【Author】 Jiang Xiancai Ye Dezhan Dai Hua Zhang Xi (The State Key Laboratory of Polymer Materials Engineering,Polymer Research Institute, Sichuan University,Cheng du 610065,China)

【机构】 四川大学高分子研究所高分子材料工程国家重点实验室；

【摘要】 <正>聚乙烯醇(PVA)作为一种可生物降解的水溶性高分子材料,由于其具有的诸多优良性能而被广泛应用于纤维、薄膜、粘接剂、造纸助剂、石油开采等领域。但PVA熔融温度在220～240℃之间,与分解温度接近,给PVA的热塑加工成型带来了困难。因此,常用的PVA材料的成型方更多还原

【Abstract】 In this paper,effects of urea/ethanolamine and glyceroL on crystallinity,thermal and mechanical properties of Poly(vinyl alcohol)(PVA) films were studied.X-ray diffraction(XRD) results showed that urea/ethanolamine was more effective in reducing the crystallinity of PVA.Melting point of urea/ethanolamine plasticized PVA film was lower than that of glycerol plasticized-PVA film.It was found that urea/ethanolamine plasticized PVA film was of better thennal stability than that of glycerol plasticized PVA film.In additional,urea/ethanolamine plasticized PVA film was of lower tensile strength and longer elongation at break than those of glycerol plasticized PVA film.更多还原