| 醋酸纤维素水分散体游离膜性质的分析 |
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| 引用本文： | 曹春燕,揣成智. 醋酸纤维素水分散体游离膜性质的分析[J]. 天津科技大学学报, 2011, 26(6): 43-47 |
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| 作者姓名： | 曹春燕 揣成智 |
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| 作者单位： | 1. 天津科技大学材料科学与化学工程学院,天津300457;天津职业大学,天津300410
2. 天津科技大学材料科学与化学工程学院,天津,300457 |
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| 基金项目： | 天津市滨海新区塘沽科技发展专项资金资助项目 |
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| 摘 要： | 以醋酸纤维素(CA)为主要原料,采用相转变法制备醋酸纤维素水分散体(CAD).利用铸膜法制备水分散体游离膜,考察了增塑剂添加量、膜厚度对固化速率、游离膜表面特性、玻璃化转变温度Tg、力学性能、透湿性及洗脱率的影响.结果表明:由CA到醋酸纤维素水分散体游离膜的制备为物理过程,膜的厚度增加,透湿性减小.增塑剂添加量增大,固化速率和Tg均减小,透湿性、洗脱率和断裂伸长率均增大,弹性模量和拉伸强度先增大后减小,游离膜的表面越平整.
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| 关 键 词： | 醋酸纤维素 游离膜 水分散体 |
Analysis of Properties of Aqueous Cellulose Acetate Dispersion Free Films |
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| CAO Chun-yan,CHUAI Cheng-zhi. Analysis of Properties of Aqueous Cellulose Acetate Dispersion Free Films[J]. Journal of Tianjin University of Science & Technology, 2011, 26(6): 43-47 |
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| Authors: | CAO Chun-yan CHUAI Cheng-zhi |
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| Affiliation: | CAO Chun-yan1,2,CHUAI Cheng-zhi1(1.College of Material Science and Chemical Engineering,Tianjin University of Science & Technology,Tianjin 300457,China,2.Tianjin Vocational Institute,Tianjin 300410,China) |
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| Abstract: | The aqueous cellulose acetate(CA)dispersion was prepared in phase inversion method in which cellulose acetate was used as main material.Casting film method was applied to prepare free films of aqueous dispersion.The influence of different plasticizer concentration and thickness of free films on Tg,mechanical properties,water vapor permeability and eluting ratio was studied.The results indicated that it was a physical process from CA to CAD free films preparation.The water vapor permeability of the membrane ... |
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| Keywords: | cellulose acetate free films aqueous dispersion |
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