| 聚环氧乙烷（PEO）／壳聚糖（CS）共混膜的醇－水渗透蒸发性能研究 |
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| 引用本文： | 王新平,沈之荃,张富尧,张一烽,林荣轩.聚环氧乙烷（PEO）／壳聚糖（CS）共混膜的醇－水渗透蒸发性能研究[J].功能高分子学报,1995(4). |
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| 作者姓名： | 王新平 沈之荃 张富尧 张一烽 林荣轩 |
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| 作者单位： | 浙江大学高分子系，浙江大学化学系分析测试中心 |
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| 摘 要： | 研究了ＥｔＯＨ－Ｈ２Ｏ，ｎ－ＰｒＯＨ－Ｈ２Ｏ，ｉ－ＰｒＯＨ－Ｈ２Ｏ体系在ＣＳ膜和ＰＥＯ／ＣＳ共混膜中的渗透蒸发性能。讨论了料液温度、料液浓度、共混膜组成对分离性能的影响，结果发现ＰＥＯ的掺入能大大提高ｃｓ膜的渗透通量；而分离因子下降。同时从膜材料的聚集态结构出发对相关的渗透蒸发行为进行了讨论。对于ＰＥＯ／ＣＳ共混膜，膜内自由体积的大小是影响分离性能的主要因素，小分子在膜中的渗透蒸发行为主要是由扩散过程控制的。本文还研究了ＰＥＯ的掺入对壳聚塘膜强度的影响以及利用ＤＳＣ谱研究ＰＥＯ掺入后壳聚糖膜聚集态结构的变化。
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| 关 键 词： | 渗透蒸发，膜分离，PEO／CS共混膜，醇水混合液 |
Studies on the Pervaporation Behaviours of Alcohol-Water Mixtures Through Polyethylene Oxide(PEO)/Chitosan(CS) Blend Membranes |
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| Wang Xinping,Shen Zhiquan, Zhang Fuyao,Zhang Yifeng, Lin Rongxuan.Studies on the Pervaporation Behaviours of Alcohol-Water Mixtures Through Polyethylene Oxide(PEO)/Chitosan(CS) Blend Membranes[J].Journal of Functional Polymers,1995(4). |
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| Authors: | Wang Xinping Shen Zhiquan Zhang Fuyao Zhang Yifeng Lin Rongxuan |
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| Abstract: | In this paper,we investigated pervaporation behaviours of EtOH-H2O,n-PrOH -H2O and i-PrOH-H2O mixtures through the PEO/CS blend membrane,in which included the effects of temperature,feed concentration and composition of blend membrane on the separation properties.The pervaporation properties observed could be explained by the aggregation state structure of the membrane.It was found that the main factor of effecting separation shoule be attuibuted to the free volume of the membrane.The permeation of alcohol and water through the PEO/CS blend, membrane is mainly controlled by the diffusion step |
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| Keywords: | Pervaporation Membrane separation PEO/CS blend membrane Alcohol-water mixture |
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