| 聚乙烯醇－g－聚丙烯酸膜用于渗透气化法分离乙醇－水的研究 |
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| 引用本文： | 姚英明,张可达,方天如. 聚乙烯醇－g－聚丙烯酸膜用于渗透气化法分离乙醇－水的研究[J]. 功能高分子学报, 1994, 0(1) |
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| 作者姓名： | 姚英明 张可达 方天如 |
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| 作者单位： | 中国科学院长春应用化学研究所 |
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| 摘 要： | 合成了聚乙烯醇－ｇ－聚丙烯酸接枝聚合物（ＰＶＡ－ｇ－ＰＡＡ），分别用ＫＯＨ、ＮａＯＨ、ＬｉＣｌ的乙醇－水溶液处理ＰＶＡ－ｇ－ＰＡＡ膜。发现离子膜用于乙醇－水的渗透气化分离可以大幅度提高分离系数，特别是用ＫＯＨ处理，分离系数可达４００。
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| 关 键 词： | 聚乙烯醇，聚乙烯醇－g－聚丙烯酸接枝聚合物，膜分离，渗透气化，乙醇－水分离 |
Study on Pervaporation Separation of EtOH/ H_2O with PVA-g-PAA Membrane |
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| Yao Yingming, Zhang Keda,Fang Tianru. Study on Pervaporation Separation of EtOH/ H_2O with PVA-g-PAA Membrane[J]. Journal of Functional Polymers, 1994, 0(1) |
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| Authors: | Yao Yingming Zhang Keda Fang Tianru |
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| Abstract: | Poly(vinyl alcohol)-g-poly(acrylic acid) graft polymers (PVA-g-PAA) were synthesized by eerie ion-initiated graft polymerization of acrylic acid onto poly (vinyl alcoh ol). The thermally crosslinked PVA-g-PAA membranes were treated with KOH.NaOH and LiCl solution in ethanol/ water, respectively. It has been found that the ion-modified PVA-g-PAA membranes exhibit much greater separation factor for the pervaporation of water-ethanol azeotropic mixture. The separation factor of a K+-modified membrane is over 400. |
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| Keywords: | poly(vinyl alcohol) poly (vinyl alcohol)-g-poly(acrylic acid)copolymer membrane separations pervaporation separation of water-ethanol. |
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