天津工业大学学报2013，Vol.32Issue(3)：8-13,6.
双凝固浴法制备高度疏水PVDF杂化微孔膜
Fabrication of a high hydrophobic PVDF hybridized microporous membrane by dual-bath coagulation
摘要
Abstract
Using N,N dimethylacetamide (DMAc) as solvent and modified TiO2 nanoparticles as nonsolvent additive,polyvinylidene fluoride (PVDF)membranes with highly hydrophobic surface and high overall porosity were fabricated by a modified NIPS method with dual-bath coagulation process.The effects of type of the first coagulant on precipitation rate,membrane morphology and wettability were investigated.It was shown that,when using isopropanol as the first coagulant and water as the second coagulant,the precipitation rate of casting solution was lower and the resulting membranes with high porosity and rough top surface with crystallization showed a high water contact angle of 130°.However,if modified TiO2 nanoparticles were added into the casting solution,a high increase of gas flux of PVDF membrane could be led to while keeping a high hydrophobicity.Moreover,an analysis to the reason that the high hydrophobicity could be kept using X-Ray energy spectrum and infrared spectroscopic analysis was provided.关键词
双凝固浴法/聚偏氟乙烯/微孔膜/疏水性/接触角/Ti02Key words
dual-bath coagulation/ PVDF/ microporous membrane/ hydrophobic/ contact angle/ TiO2分类
轻工纺织引用本文复制引用
王志英,李建林,吴晓君,杨振生..双凝固浴法制备高度疏水PVDF杂化微孔膜[J].天津工业大学学报,2013,32(3):8-13,6.基金项目
河北省自然基金项目(B2008000016) （B2008000016）
河北省教育厅科研计划项目(Z2008309) （Z2008309）
