| 低分子量中性溶质体系的纳滤膜的透过特性 |
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| 引用本文： | 王晓琳,中尾真一. 低分子量中性溶质体系的纳滤膜的透过特性[J]. 陶瓷科学与艺术, 1998, 0(4) |
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| 作者姓名： | 王晓琳 中尾真一 |
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| 作者单位： | 南京化工大学高分子系(王晓琳)，东京大学工学部化学系统工程系(中尾真一) |
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| 摘 要： | 根据浓差极化模型和非平衡热力学模型，对４种品牌的纳滤膜（ＮＦ４０膜、ＮＴＲ７４５０膜、Ｄｅｓａｌ５膜和Ｇ２０膜）在醇类和糖类中性溶质体系的透过实验数据进行回归计算，求得膜定数（即膜的反射系数和溶质透过系数），再由这些膜定数结果根据细孔模型估算了４种品牌的纳滤膜的细孔结构参数，这４种膜的细孔半径范围在０．４～０．８ｎｍ。结果讨论表明细孔模型适用于纳滤膜的结构评价。
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| 关 键 词： | 膜分离 纳滤膜 传递现象 细孔模型 |
PERMEATION PERFORMANCE OF NANOFILTRATION MEMBRANES FOR SYSTEMS OF AQUEOUS SOLUTIONS OF NEUTRAL SOLUTES WITH LOW MOLECULAR WEIGHT |
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| Wang Xiaolin. PERMEATION PERFORMANCE OF NANOFILTRATION MEMBRANES FOR SYSTEMS OF AQUEOUS SOLUTIONS OF NEUTRAL SOLUTES WITH LOW MOLECULAR WEIGHT[J]. Ceramics Science & Art, 1998, 0(4) |
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| Authors: | Wang Xiaolin |
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| Affiliation: | Wang Xiaolin Department of Polymer Science,Nanjing University of Chemical Technology,Nanjing,210009,China Nakao Shinichi Department of Chemical System Engineering,School of Engineering,The University of Tokyo,Tokyo,113 8656,Japan |
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| Abstract: | Permeation experiments of the four kinds of nanofiltration membranes (Desal 5, NF 40, NTR 7450 and G 20) were performed for the systems of aqueous solutions of neutral solutes with low molecular weight (alcohols and saccharides having different molecular weights). The structural parameters of these nanofiltration membranes (the pore radius and the ratio of the membrane porosity to the membrane thickness) were discussed on the basis of the steric hindrance pore model. The pore radii were estimated to range from 0.4 to 0.8 nm. The steric hindrance model was verified to be applicable for the evaluation of the structure of nanofiltration membranes. |
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| Keywords: | membrane separation\ nanofiltration membrane\ transport phenomena\ pore model |
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