Ion-specific swelling behavior of poly(vinyl alcohol) gel in aqueous solutions containing some divalent ions

被引：0
|
作者：
Yoko Masuda
Yukari Okazaki
Tadashi Nakanishi
机构：
[1] Department of Human Environmental Engineering,
[2] Ochanomizu University,undefined
[3] 2-1-1 Otsuka,undefined
[4] Bunkyo-ku,undefined
[5] Tokyo 112-8610,undefined
[6] Japan,undefined
来源：
Colloid and Polymer Science | 2002年 / 280卷
关键词：
Poly(vinyl alcohol) Gel Swelling Ion specificity;
D O I：
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中图分类号：
学科分类号：
摘要：
Swelling behaviors of poly(vinyl alcohol) (PVA) gel were investigated in solutions of salts containing certain divalent ions, namely, alkaline-earth-metal halides and sulfates of alkali-metals, alkaline-earth-metals, and transition metals. The gel deswelled in the solutions of the alkaline-earth-metal chlorides but swelled in those of the bromides. However, the cation specificities of the swelling for both of the halides were roughly the same: the degrees of swelling are Sr2+<Ca2+<Mg2+. The gel deswelled for all sulfate solutions with specificities for alkali-metal and alkaline-earth-metal cations: the swelling degrees are K+≅Na+<Mg2+<Li+. There was no order for transition metals.
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页码：873 / 875
页数：2
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