| 高取代醋酸酯淀粉膜的制备及其耐水性能研究 |
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| 引用本文： | 戴小敏,左秀锦,刘袖洞,马小军. 高取代醋酸酯淀粉膜的制备及其耐水性能研究[J]. 大连大学学报, 2012, 33(3): 34-36,47 |
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| 作者姓名： | 戴小敏 左秀锦 刘袖洞 马小军 |
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| 作者单位： | 1. 大连大学环境与化学工程学院,辽宁大连,116622
2. 中国科学院大连化学物理研究所,辽宁大连,116023 |
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| 摘 要： | 采用溶液浇铸法制备了醋酸酯淀粉膜。利用扫描电镜手段考察了醋酸酯淀粉取代度、铸膜液溶剂及铸膜液浓度等因素对醋酸酯淀粉膜制备的影响并研究了该膜的耐水性能。结果表明,醋酸酯淀粉取代度越大,铸膜液溶剂挥发速度越低,铸膜液浓度8~20 wt%,能制备出较好致密性的醋酸酯淀粉膜。在水中24h后膜失重率约为13%,高取代醋酸酯淀粉膜具有较好耐水性能。
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| 关 键 词： | 醋酸酯淀粉膜 制备 耐水性能 |
Study on Preparation and Water-Resistance of Membranes of Starch Acetate with High Degree Substitution |
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| DAI Xiao-min,ZUO Xiu-jin,LIU Xiu-dong,MA Xiao-jun. Study on Preparation and Water-Resistance of Membranes of Starch Acetate with High Degree Substitution[J]. Journal of Dalian University, 2012, 33(3): 34-36,47 |
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| Authors: | DAI Xiao-min ZUO Xiu-jin LIU Xiu-dong MA Xiao-jun |
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| Affiliation: | 1.College of Environment and Chemical Engineering,Dalian University,Dalian 116622,China;2.Dalian Institute of Chemical Physics,Chinese Academy of Sciences,Dalian 116023,China) |
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| Abstract: | The membranes of starch acetate were prepared with the casting method in this paper.The influences of the factors including DS,the solvent and concentration of casting solution on preparation of the membranes of starch acetate were investigated by SEM.Moreover the water-resistance of the membrane was determined.Results showed that more compact membrane was obtained with higher DS starch acetate,the solvent of casting solution with lower volatility and 8-20% concentration.Weight loss was measured to investigate the water-resistance of starch acetate.Results showed that weight loss was 13% in water after 24 hours.This suggested that better water stability can be achieved through higher DS. |
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| Keywords: | membranes of starch acetate preparation water-resistance |
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