摘要
介绍聚偏氟乙烯的特性及成膜肌理,分别测试以DMF为溶剂,PVDF含量为17%时,加入不同含量Zn-X分子筛得到(PVDF)共混膜的接触角。研究表明,聚偏氟乙烯是一种有着极好机械强度、化学稳定性和成膜性的聚合物,是制备超滤或微滤膜的优良原料。采用Zn-X型分子筛以物理共混的方法对PVDF膜进行改性,可以提高聚合物膜表面的亲水性,从而提高膜通量,降低膜污染,延长膜的使用寿命。
The characteristics of polyvinylidene fluoride and the filming texture were introduced. The contact an-gles of the blend membranes obtained with different contents of Zn-X molecular sieves were measured when DMF was used as the solvent and the PVDF content was 17%. Studies have shown that polyvinylidene fluoride is a polymer with excellent mechanical strength, chemical stability, and film forming properties and is an excellent raw material for the preparation of ultrafiltration or microfiltration membranes. The use of Zn -X molecular sieves to modify PVDF membranes by physical blending can increase the hydrophilicity of the polymer membrane surface,thereby increasing membrane flux, reducing membrane fouling, and prolonging membrane lifetime.
作者
张倩
张毅
Zhang Qian;Zhang Yi(l.College of Textile, Tianjin Polytechnic University, Tianjin 300387, Chin;Tianjin Textile Fibre Inspection Institute, Tianjin 300192, China)
出处
《天津纺织科技》
2018年第2期53-55,共3页
Tianjin Textile Science & Technology
关键词
PVDF膜
亲水改性
分子筛
接触角
物理共混
PVDF Membrane
Hydrophilic Modification
Molecular Sieve
Contact Angle
Physical Blending
