【作者】 江献财； 蒋婷； 颜曦； 代华； 张熙；

【Author】 JIANG Xiancai,JIANG Ting,YAN Xi.DAI Hua,ZHANG Xi (State Key Laboratory of Polymer Materials Engineering,Polymer Research Institute of Sichuan University,Chengdu 610065)

【机构】 高分子材料工程国家重点实验室四川大学高分子研究所；

【摘要】 <正>聚乙烯醇(PVA)是一种性能优异的可生物降解水溶性高分子材料。PVA的熔融温度(T_m)在220～240℃之间,与分解温度接近,这给PVA的热塑加工成型带来了困难。因此,常用的PVA材料的成型方法为溶液成型法。与溶液加工成型法相比,热塑加工方法具有工艺简单、更多还原

【Abstract】 The melt extrusion of Poly(vinyl alcohol)(PVA)was difficult to realize for the high melting point(T_m)of PVA,making the thermal degradation of PVA during the melting process.The widely used plasticizers for PVA are high boiling water-soluble organic compounds containing hydroxyl groups,such as glycerol.However,the plasticizing efficiency of these plasticizers is limited.In this paper,magnesium chloride hexahydrate and glycerol were innovatively used to achieve the melt extrusion of PVA.The results of our work proved that the complex of magnesium chloride hexahydrate and glycerol had a high plasticizing efficiency for PVA and through this complex plasticizer the melt extrusion of PVA could be easy realized.更多还原