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首页> 美国卫生研究院文献>Membranes >Electrodialytic Transport Properties of Anion-Exchange Membranes Prepared from Poly(vinyl alcohol) and Poly(vinyl alcohol-co-methacryloyl aminopropyl trimethyl ammonium chloride)
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Electrodialytic Transport Properties of Anion-Exchange Membranes Prepared from Poly(vinyl alcohol) and Poly(vinyl alcohol-co-methacryloyl aminopropyl trimethyl ammonium chloride)

机译：聚乙烯醇和聚乙烯醇-共-甲基丙烯酰基氨丙基三甲基氯化铵制备的阴离子交换膜的电渗析输运性质

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摘要

Random-type anion-exchange membranes (AEMs) have been prepared by blending poly(vinyl alcohol) (PVA) and the random copolymer-type polycation, poly(vinyl alcohol-co-methacryloyl aminopropyl trimethyl ammonium chloride) at various molar percentages of anion-exchange groups to vinyl alcohol groups, Cpc, and by cross-linking the PVA chains with glutaraldehyde (GA) solution at various GA concentrations, CGA. The characteristics of the random-type AEMs were compared with blend-type AEMs prepared in our previous study. At equal molar percentages of the anion exchange groups, the water content of the random-type AEMs was lower than that of the blend-type AEMs. The effective charge density of the random-type AEMs increased with increasing Cpc and reached a maximum value. Further, the maximum value of the effective charge density increased with increasing CGA. The maximum value of the effective charge density, 0.42 mol/dm3, was obtained for the random-type AEM with Cpc = 4.2 mol % and CGA = 0.15 vol %. A comparison of the random-type and blend-type AEMs with almost the same Cpc showed that the random-type AEMs had lower membrane resistance than the blend-type ones. The membrane resistance and dynamic transport number of the random-type AEM with Cpc = 6.0 mol % and CGA = 0.15 vol % were 4.8 Ω cm2 and 0.83, respectively.
机译：通过将聚乙烯醇（PVA）和无规共聚物型聚阳离子聚乙烯醇-共-甲基丙烯酰氨基丙基三甲基氯化铵按阴离子的不同摩尔百分比混合，制备了无规阴离子交换膜（AEM）。 -通过将PVA链与戊二醛（GA）溶液以各种GA浓度CGA交联来将基团交换为乙烯醇基Cpc。将随机型AEM的特征与我们先前研究中制备的混合型AEM进行了比较。在阴离子交换基团的摩尔百分比相等时，无规型AEM的水含量低于共混型AEM的水含量。随机型AEM的有效电荷密度随Cpc的增加而增加，并达到最大值。另外，有效电荷密度的最大值随着CGA的增加而增加。对于Cpc = 4.2 mol％和CGA = 0.15 vol％的随机型AEM，获得的有效电荷密度最大值为0.42 mol / dm 3 。 Cpc几乎相同的随机型和混合型AEM的比较表明，随机型AEM的膜阻力要低于混合型AEM。 Cpc = 6.0 mol％和CGA = 0.15 vol％的随机型AEM的膜电阻和动态迁移数分别为4.8Ωcm 2 和0.83。

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