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Shape memory effect of chitosan/glycerol composite film in mixed water/ethanol solution

机译:壳聚糖/甘油复合膜在混合水/乙醇溶液中的形状记忆效应

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摘要

In this paper, a chitosan (CS)/glycerol (GL) composite film was prepared, and the solution-responsive feature of the composite film in a mixed water/ethanol solution was investigated. The composite film began to show obvious shape recovery behavior when the water content of the mixed solution was more than 50% v/v. In mixed solutions, when the molar ratio of water molecules and ethanol molecules was more than 2:1, apart from the combination with the ethanol molecules, the residual water molecules could interact with the CS molecules, promoting the formation of hydrogen bonds. The stress stored in CS molecules was released, and the shape memory effect of the composite film was triggered. In addition, the effect of water content in the mixed solutions on the structural, crystal, thermal stability and mechanical properties of the composite film was characterized. (c) 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47037.
机译:本文制备了壳聚糖(Cs)/甘油(GL)复合膜,研究了混合水/乙醇溶液中复合膜的溶液响应特征。 当混合溶液的水含量大于50%v / v时,复合膜开始显示明显的形状恢复行为。 在混合溶液中,当水分子和乙醇分子的摩尔比大于2:1时,除了与乙醇分子的组合外,残留的水分子可以与Cs分子相互作用,促进氢键的形成。 释放储存在CS分子中的应力,触发复合膜的形状记忆效果。 此外,表征了对复合膜的结构,晶体,热稳定性和机械性能的混合溶液中的水含量的影响。 (c)2018 Wiley期刊,Inc.J.Phill。 聚合物。 SCI。 2019,136,47037。

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