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PVA基聚离子复合物膜的结构与性能研究

Yan-mei ZHANG,Ping-rui MENG,Xiao-hui WANG,Hao-qiang YU,Liang-bo LI

Cailiao Gongcheng/Journal of Materials Engineering（2011）

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Abstract
聚乙烯醇接枝聚乙烯氯化铵(PV-g-PVAC)与聚乙烯醇接枝聚丙烯酸钠(PVA-g-SPA)自组装PVA基聚离子复合物(PPIC).利用红外光谱(IR)对PPIC的结构进行表征.PPIC膜的SEM照片表面呈现有序孔状结构,有利于水的吸收.采用差示扫描量热法(DSC)测定了PPIC的耐热性.PPIC水溶液pH=5(反离子等摩尔复合)时,膜耐水性最好;PPIC膜的耐水性随乙醇浓度的增加或膜退火温度升高而提高.测定了PPIC复合膜对93%(体积分数)高浓度乙醇废水的渗透汽化性能,分离因子980,渗透通量1485g·(m2h)-1.
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Key words
Ethanol/water,Membrane separation,PVA-based polyion complex,PVA-g-polyvinyl ammonium chloride,PVA-g-sodium polyacrylate
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