Pore-structure, hydrophilicity, and particle filtration characteristics of polyaniline-polysulfone ultrafiltration membranes
Pore-structure, hydrophilicity, and particle filtration characteristics of polyaniline-polysulfone ultrafiltration membranes
复制标题
DOI：
10.1039/b925269j
复制
发表时间：
2010-01-01
影响因子：
--
通讯作者：
Hoek, Eric M. V.
中科院分区：
文献类型：
--
作者：
Guillen, Gregory R.;Farrell, Thomas P.;Hoek, Eric M. V.
合成了一种高度可加工形式的聚苯胺，并通过非溶剂诱导相转化制备了纯聚苯胺和聚苯胺-聚砜超滤膜。含有高达75%聚苯胺的共混物的透水性比纯聚砜膜高10-20%，而纯聚苯胺膜的透水性是纯聚砜膜的10倍，并且具有极强的亲水性。利用新型扫描电镜成像技术，结合表征数据和Hagen-Poiseuille孔流模型，阐明了聚苯胺含量的增加增加了膜的表观孔径和亲水性，同时降低了皮层厚度和孔隙率。纯聚苯胺膜表现出相对更大、更短的孔隙，这与亲水性的增加相结合，产生了观察到的分离性能的增强。
A highly processable form of polyaniline was synthesized and used to form pure polyaniline and polyaniline-polysulfone ultrafiltration membranes by nonsolvent induced phase inversion. Blends containing up to 75% polyaniline were 10-20% more permeable than pure polysulfone membranes, while pure polyaniline membranes were 10 times more permeable and extremely hydrophilic. A novel scanning electron microscope imaging technique was combined with characterization data and the Hagen-Poiseuille pore-flow model to elucidate that increasing polyaniline content increased the apparent membrane pore size and hydrophilicity, while decreasing skin layer thickness and porosity. Pure polyaniline membranes exhibited relatively larger, shorter pores that combined with the increased hydrophilicity to produce the observed separation performance enhancements.