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首页> 外文期刊>Journal of Applied Polymer Science >Properties of modified polyacrylonitrile membranes prepared by copolymerization with hydrophilic monomers for water-ethanol mixture separation
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Properties of modified polyacrylonitrile membranes prepared by copolymerization with hydrophilic monomers for water-ethanol mixture separation

机译：与亲水性单体共聚制备水-乙醇混合物的改性聚丙烯腈膜的性能

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A new kind of terpolymer membrane was employed to separate a permselective water-alcohol mixture. This membrane was prepared via the copolymerization of acrylonitrile, sodium salt styrene sulfonic acid (SStSA), and hydroxyethyl methacrylate in dimethylsulfoxide with azobisisobutyronitrile as an initiator. The reaction mechanism, resultant structure, and polymer composition were confirmed by IR and elemental analysis. The effects of the feed composition on the polymer composition, mechanical properties, thermal properties, and degree of swelling were investigated. It was found that water permeated through the membrane preferentially in a water/alcohol system. The flux increased with the increase of SStSA, but the separation factor decreased drastically with higher SStSA. For a 50 wt % water-ethanol mixture, a flux of 0.65 kg/m(2) h and a separation factor of 212 were obtained at 30degreesC when the membrane containing the highest SStSA content was used. The capacities of the metal ions absorbed by the membranes were investigated in the study. (C) 2003 Wiley Periodicals, Inc. [References: 16]
机译：一种新型的三元共聚物膜被用来分离选择性渗透的水-醇混合物。该膜是通过将丙烯腈，钠盐苯乙烯磺酸（SStSA）和甲基丙烯酸羟乙酯在二甲亚砜中与偶氮二异丁腈作为引发剂共聚而制备的。通过IR和元素分析确认反应机理，所得结构和聚合物组成。研究了进料组成对聚合物组成，机械性能，热性能和溶胀度的影响。已经发现水优先在水/醇系统中渗透通过膜。通量随着SStSA的增加而增加，但分离系数随着SStSA的增加而急剧下降。对于50 wt％的水-乙醇混合物，当使用含有最高SStSA含量的膜时，在30℃下的通量为0.65 kg / m（2）h，分离系数为212。在研究中研究了膜吸收的金属离子的容量。 （C）2003 Wiley Periodicals，Inc. [参考：16]

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