膜科学与技术

PVC/PVDF/PMMA共混膜的研制

作者：徐晶晶王军¹ 罗文华²

单位： 1.东华大学环境科学与工程学院,上海 201620；2.泰安市岱岳区环保局,山东泰安 271000

关键词：相容性；稀溶液粘度法；聚氯乙烯/聚偏氟乙烯/聚甲基丙烯酸甲酯；共混膜改性

出版年,卷(期):页码： 2011,31(4):1-5

摘要：

文章采用剪切粘度法对聚氯乙烯(PVC）/聚偏氟乙烯(PVDF)/聚甲基丙烯酸甲酯(PMMA)体系的相容性进行了研究，结果表明，该体系为部分相容体系，在此基础上采用稀溶液粘度法对各共混配比的相容性进行了预测。对相容性较好的PVC/PVDF/PMMA共混体系由相转化法制备了共混膜，并用扫描电镜，对共混膜的形态结构进行了观察。对共混膜的水通量、拉伸强度、伸长倍数和接触角进行了测量，发现共混改性后，共混膜的水通量、韧性及亲水性较PVC膜均有较大程度的提高。通过对不同组成共混膜的透水率和拉伸强度的比较，发现配比为6:1:3的共混膜水通量和拉伸强度都较好，因此该体系的最佳配比为6:1:3。

The miscibility of PVC/PVDF/PMMA blending system was investigated by the means of shearing viscosity. It was demonstrated that blended solution possessed partial miscibility. Then the dilute solution viscometry was used to determine the miscibility of all sorts of polymer blending ratio. PVC/PVDF/PMMA blend membranes were prepared by phase inversion. The micro-structure of blend membranes was analyzed by SEM and the water permeability, mechanical character and contact angle of blend membranes were measured too. The results showed that the water permeability, toughness, flexibility and the hydrophilicity of blend membranes were improved greatly compared to PVC membrane. It was obtained that both the permeability and tensile strength of blending membrane with the ratio of 6:1:3 were better. Therefore the optimizing blending ratio was 6:1:3.

徐晶晶（1986-），女，河南省开封市人，硕士，研究方向：膜分离技术。联系电话：15121029185. Email: xjj_331@dhu.edu.cn 联系人：王军。通讯地址：上海市松江区人民北路2999号东华大学环境学院。

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