化工进展2019，Vol.38Issue(3)：1461-1467,7.DOI:10.16085/j.issn.1000-6613.2018-0996
界面增强型PVDF/PET膜的制备及性能
Preparation and properties of interface enhanced PVDF/PET membrane
摘要
Abstract
An interface-enhanced PVDF/PET ultrafiltration membrane was successfully prepared by immersion precipitation using a surface modified PET nonwoven as support material. The preparation conditions of the silane coupling agent KH550 (3-aminopropyltriethoxysilane) hydrolyzate were obtained via on-line conductivity measurement. The effects of the modification conditions on the interfacial and mechanical properties of the PVDF/PET membrane were investigated in this work. The peel strength, surface micro-morphology and chemical composition of the prepared membrane were characterized by the180°-peel test, SEM and FTIR, respectively. When KH550 content in the hydrolysate was less than 3％, the peel strength between the PVDF and PET increased with increasing treatment time. While KH550 content in the hydrolysate was higher than 3％, the peel strength between PVDF and PET increased firstly and then decreased slightly with increasing treatment time. Furthermore, with increasing KH550 concentration or treatment time, the tensile strength of PVDF/PET membrane showed a "volcanic" trend.The separation and permeation test results indicated that the rejection of bovine serum albumin (BSA) in PVDF membrane was almost constant and the water flux increased slightly after modification the PET surface.关键词
聚偏氟乙烯/聚对苯二甲酸乙二醇酯/界面/超滤膜/性能Key words
polyvinylidene fluoride/polyethylene terephthalate/interface/ultrafiltration membranes/properties分类
通用工业技术引用本文复制引用
王志英,韩承志,宁素素,杨振生,李春利..界面增强型PVDF/PET膜的制备及性能[J].化工进展,2019,38(3):1461-1467,7.基金项目
河北省高等学校科学技术研究重点项目(ZD2015107) （ZD2015107）
