天津工业大学学报2011，Vol.30Issue(4)：6-10,5.
模板辅助浸没凝胶法PVDF疏水微孔膜的制备与性能
Preparation and performances of PVDF hydrophobic microporous membrane via immersion precipitation assisted with template
摘要
Abstract
Highly hydrophobic polyvinylidene fluoride (PVDF) microporous membranes are prepared via immersion precipitation assisted with template. Templates are obtained by stainless steel mesh's inserting into PDMS. N-methyl-2-pyrrolidone( NMP), mixtures of NMP and H20 are used as solvent, H20 as non-solvent, respectively. Then, in order to analyse the effects of the template microstructure, PVDF mass fraction and water addition in the casting solution on morphology and performances of the membrane, the structures, hydrophobic degree of the bottom surface and permeability of the membrane are characterized. It is shown that the structure of the bottom surface is determined by the template microstructure and the structure formed from phase inversion altogether. The template enhances the hydrophobic degree of the bottom surface, and increases slightly permeability of the membrane as well. PVDF mass fraction and water addition in the casting solution are key factors for permeability of the membrane, and works slightly on hydrophobic degree of the membrane's bottom surface. It is suggested that immersion precipitation assisted with template is an ideal method to prepare highly hydrophobic PVDF membrane.关键词
聚偏氟乙烯/高度疏水性/微孔膜/浸没凝胶法/模板Key words
poly (vinylidene fluoride)/ highly hydrophobic/ microporous membrane/ immersion precipitation/ template分类
轻工纺织引用本文复制引用
吕龙柱,杨振生,王志英,杨亚从,田淑娜..模板辅助浸没凝胶法PVDF疏水微孔膜的制备与性能[J].天津工业大学学报,2011,30(4):6-10,5.基金项目
河北省科学技术研究与发展计划项目(07125602D-3) （07125602D-3）
河北省自然科学基金资助项目(B2008000016) （B2008000016）
