Studies of the plasticizing effect of different hydrophilic inorganic salts on starch/poly (vinyl alcohol) films
Studies of the plasticizing effect of different hydrophilic inorganic salts on starch/poly (vinyl alcohol) films
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不同亲水性无机盐对淀粉/聚乙烯醇薄膜增塑效果的研究
DOI：
10.1016/j.ijbiomac.2015.11.046
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发表时间：
2016-01-01
影响因子：
8.2
通讯作者：
Hou, Linxi
中科院分区：
文献类型：
--
作者：
Jiang, Xiancai;Li, Hongmei;Hou, Linxi
研究了不同无机盐LiCl2、MgCl2中心点6H(2)O、CaCl2和AlCl3中心点6H(2)O对淀粉/PVA薄膜结晶性能、热性能、水蒸气阻隔性和拉伸性能的影响。实验结果表明，这四种无机盐对淀粉/PVA薄膜均具有较高的增塑效率。这四种无机盐在15wt%的含量范围内均与淀粉/PVA有很好的相容性，加入15wt%的无机盐使淀粉/PVA完全相容。这四种盐对淀粉和PVA的结晶都有较强的破坏作用。在这四种盐中，AlCl3中心点6H(2)O对淀粉/PVA的热稳定性的负面影响最大，LiCl对淀粉/PVA膜的吸水率的改善作用最大。总体而言，在四种无机盐中，MgCl2、DOT、6H(2)O和CaCl2是较适合淀粉/PVA薄膜的增塑剂。当添加15wt%的MgCl2中心点6H2O和CaCl2时，淀粉/PVA薄膜的断裂伸长率分别达到418.83%和434.80%。(C)2015爱思唯尔B.V.保留所有权利。
The effects of different inorganic salts LiCl, MgCl2 center dot 6H(2)O, CaCl2, and AlCl3 center dot 6H(2)O on the crystalline, thermal, water vapor barrier, and tensile properties of starch/PVA films were studied. The high plasticizing efficiency of all these four inorganic salts for starch/PVA film was confirmed by the obtained results. These four salts all had a good compatibility with starch/PVA within the content of 15 wt% and starch/PVA became completely miscible with the addition of 15 wt% inorganic salts. All these four salts had a strong destroying effect on the crystals of starch and PVA. Among these four salts, AlCl3 center dot 6H(2)O had the largest negative effect on the thermal stability of starch/PVA and LiCl had the largest improving effect on the water sorption rate of starch/PVA film. On the whole MgCl2 center dot 6H(2)O and CaCl2 were the more suitable plasticizer for starch/PVA film among these four inorganic salts. With the addition of 15 wt% MgCl2 center dot 6H2O and CaCl2, the elongation at break of starch/PVA film could reach to 418.83% and 434.80%, respectively. (C) 2015 Elsevier B.V. All rights reserved.