摘要
通过混合焓的计算,对不同共混比和聚合物浓度的聚氯乙烯(PVC)/聚乙烯醇缩丁醛(PVB)共混比体系的相容性进行预测,并通过稀溶液黏度(DSV)法、运动黏度法和目视法进行相应验证;以N,N-二甲基乙酰胺(DMAc)为溶剂,通过湿相转换法(NIPS)制备PVC/PVB共混平板超滤膜,并对超滤膜的性能和结构进行测试,系统地研究了PVC/PVB共混铸膜液的组成对平板超滤膜的结构及其分离性能的影响,为通过PVB共混改性PVC膜材料制备超滤膜提供了理论依据。
In the experiment, poly-vinyl-ehloride （PVC） and poly-vinyl-butyral （PVB） were blended to prepare the PVC ultra- filtration （UF） membrane. To show the compatibility of the system as a partly miscibility system, the compatibility of the PVC/PVB blending system was characterized by dilute-solution viscosity （DSV）, dynamic viscosity method and visual method. To further systematically study the blending miscibility of the polymer PVC and PVB in the dilution di-methyl-acetamaide （DMAc）, the characteristics of PVC/PVB casting solution and the uhra-fihration membrane prepared by non-solvent induced phase separation （NIPS） in different concentration of polymers, as well as in different ratio of PVC and PVB, was tested. Concentration and ratio of the polymer was also discussed to explore the influence to the structure and its miscibility of separation of the blending ultra-filtration membrane, which provides theory basis for the preparation of ultra-filtration membrane that using PVB to blend modified PVC as material.
出处
《净水技术》
CAS
2012年第5期46-54,共9页
Water Purification Technology
