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投稿时间：2015-08-13
投稿时间：2015-08-13
中文摘要: 以魔芋葡甘聚糖（KGM）和威兰胶（WG）为基材，制备了一系列复合膜。通过单因素试验和正交试验，探讨了魔芋粉和威兰胶复合溶液浓度、WG/KGM比例、烘干温度、烘干时间等因素对复合膜的制备及复合膜透明度、水溶性、水蒸汽透过系数等性能的影响。并采用分子模拟方法，研究了KGM、脱乙酰KGM（da-KGM）与WG之间的相互作用。结果表明，膜制备的最佳工艺条件为：复合溶液浓度0.6%，WG/KGM比例2∶8（g/g）、烘干温度70℃、烘干时间7 h。KGM（da-KGM）和威兰胶分子间存在氢键相互作用，da-KGM和威兰胶分子间比KGM与威兰胶间的氢键更多，相互作用更强。
Abstract:A series of composite films were prepared taking konjac glucomannan（KGM）and welan gum（WG）as raw materials.The effect of the concentration of composite solution of KGM and WG，the ratio of WG/KGM，drying temperature and drying time on the preparation，transmittance，water-solubility，water vapor permeability of the composite film，were firstly investigated by single factor experiments and orthogonal experiments.The interaction between KGM（da-KGM）and WG was also investigated by using molecular modeling studies.The results showed that the optimum film-forming parameters were as follows：concentration of composite solution 0.6%，WG/KGM 2∶8（g/g），drying temperature 70℃，and drying time 7 h.There was hydrogen bond interactions between the molecules of KGM and WG.More intermolecular hydrogen bondings existed in da-KGM and WG complex.And the interaction between da-KGM and WG was stronger than that between KGM and WG.
文章编号：201615004 中图分类号： 文献标志码：
基金项目:福建省自然科学基金项目（2014J01384）；福建省教育厅科技计划项目（JA13440）；闽南师范大学博士启动基金（2006L21335）
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