THE FORMATION OF MICROPOROUS POLYVINYLIDENE DIFLUORIDE MEMBRANES BY PHASE-SEPARATION
THE FORMATION OF MICROPOROUS POLYVINYLIDENE DIFLUORIDE MEMBRANES BY PHASE-SEPARATION
复制标题
DOI：
10.1016/s0376-7388(00)81159-x
复制
发表时间：
1991-04-01
影响因子：
9.5
通讯作者：
MUNARI, S
中科院分区：
文献类型：
--
作者：
BOTTINO, A;CAMERARODA, G;MUNARI, S
将聚偏氟乙烯（PVDF）在8种不同溶剂中的溶液进行铸膜，制备了微孔膜。 通过扫描电子显微镜观察、水含量测量和水渗透性测试对膜进行了表征。 得到的膜特性和聚合物-溶剂溶液和溶剂-非溶剂系统的性质之间的可能的相关性进行了广泛的讨论。 分析表明，大多数文献中建议或采用的相关性不适用于PVDF膜，而溶剂-非溶剂体系的传输性能似乎显着影响最终的膜结构和分离过程中的性能。
Microporous polyvinylidene fluoride (PVDF) membranes were prepared by casting and coagulating solutions of the polymer in eight different solvents. The membranes were characterized by scanning electron microscope observations, water content measurements and water permeability tests. The possible correlations between the resulting membrane characteristics and the properties of both the polymer-solvent solutions and the solvent-nonsolvent systems are extensively discussed. The analysis indicates that most of the correlations suggested or adopted in the literature do not hold for PVDF membranes, whereas the transport properties of the solvent-nonsolvent system seem to affect significantly the final membrane structure and the resulting performances in separation processes.