水蒸气在高分子膜中吸附和传递行为的研究进展

Progress of the Study on Water Vapor Sorption and Transport in Polymer Membranes

水蒸气作为一种可凝聚性气体,导致它在高分子膜中的渗透行为比其它非凝聚性气体复杂。简要综述了水蒸气分子在高分子膜中的溶解和扩散行为,在不同的水蒸气活度下,考察了水蒸气在高分子膜中的溶解系数、扩散系数和渗透系数。分析了水分子与膜之间的相互作用,及水分子的成簇机理。

As a condensable gas, the water vapor permeates through membranes become more complicated than non-condensable gases. The solubility and diffusion behaviors of water vapor in polymer films are reviewed. Under the different water vapor activities, the solubility, diffusion and permeability coefficients of water vapor in membranes were investigated. The interactions between water and polymer and the mechanism of clustering water are analyzed.