摘要
以亲水性的聚乙二醇(PEG)和聚乙烯吡咯烷酮(PVP)为添加剂,利用浸没沉淀相转化法制备聚偏氟乙烯(PVDF)多孔膜。利用扫描电子显微镜(SEM)、X射线衍射仪(XRD)、傅立叶-红外光谱仪(FT-IR)对所制得膜进行表征测试,分析了添加剂对膜孔结构、结晶度和膜性能的影响。结果表明:添加剂能有效改善膜的孔径结构,使得膜的微孔增多、孔间连通性增强、膜结晶度降低,达到提高膜的纯水通量和孔隙率的效果。
By mixing hydrophilic PEG and PVP into the casting solution respectively,PVDF porous membranes were prepared by means of immerged phase inversion process.The PVDF porous membrane were characterized by scanning electron microscopy（SEM）,X-ray diffraction（XRD）,fourier transition infrared spectroscopy（FT-IR）,and properties of the membranes were also investigated.The results showed that adding PEG and PVP could increase the number and connectivity of micropores,decrease the crystallinity,and improve the water flux and porosity.
出处
《化学研究与应用》
CAS
CSCD
北大核心
2010年第12期1551-1556,共6页
Chemical Research and Application
基金
上海市科委国际科技合作基金项目(09230713300)
关键词
PVDF
添加剂
结晶
性能
PVDF
additive
crystallinity
properties
