现代食品科技2012，Vol.28Issue(7)：801-805,5.
Al2O3/PVDF杂化膜的制备及凝胶相变过程的研究
Preparation and Gelling-phase Inversion of Al2O3/PVDF Hybrid Membrane
董浩 1唐成1
作者信息
- 1. 华南理工大学轻工与食品学院,广东广州510640
- 折叠
摘要
Abstract
The casting solution for forming Al2O3/ PVDF hybrid membrane was prepared using PVDF modified by KOH in the solution of methanol as a membrane-fanning polymer, using vinyl-trimethoxy-silicane as a coupling agent and using aluminium isopropoxide (AIP) as an inorganic precursor.,Al2O3/PVDF hybrid membrane linking with chemical bond was obtained with the dry-wet inversion method. The effects of AIP on the phase behavior and gelation kinetics of the casting solution were studied so as to explore the mechanism of the influence of AIP on micro-structure of the Al2O3/PVDF hybrid membrane. Results showed that the change in the phase equilibrium of casting solution was encouraged by an increase in AIP concentration and casting solution became thermodynamic unstable, so that compatibility of the casting solution with non-solvent was decreased and the gelation rate of casting solution was accelerated. The highest gelation rate was found in the initial period of membrane formation, and then it slowed down. The gelation rates for different casting solution varied with different casting solutions. Both gelation rate and phase separation rate for the casting solutions were improved by the increases of AIP concentrations; however the gelation rate decreased when AIP concentration reached 20%.关键词
Al2O3/PVDF杂化膜/动力学/相平衡/凝胶速率/相变过程Key words
Al2O3/PVDF hybrid membrane/ kinetics/ phase equilibrium/ gelation rate/ phase inversion引用本文复制引用
董浩,唐成..Al2O3/PVDF杂化膜的制备及凝胶相变过程的研究[J].现代食品科技,2012,28(7):801-805,5.
