期刊
KOREAN JOURNAL OF CHEMICAL ENGINEERING
卷 22, 期 4, 页码 605-610出版社
KOREAN INSTITUTE CHEMICAL ENGINEERS
DOI: 10.1007/BF02706651
关键词
polypropylene grafted polystyrene sulfonic acid; supercritical carbon dioxide; lmpregnation; direct methanol fuel cell; laminated membrane
Composite membranes were formed by grafting styrene using supercritical carbon dioxide (scCO(2)) impregnation and polymerization procedures. A polypropylene membrane, styrene monomer, divinylbenzene (DVB), and 2,2'-Azoisobutyronitrile (AIBN) were placed in a reactor, and CO2 was injected into the reactor at 38 degrees C for the scCO(2) impregnation process. After impregnation, the polymerization process was carried out at 78 degrees C. The grafted membranes were sulfonated in concentrated sulfuric acid at 95 degrees C. These polypropylene grafted polystyrene sulfonic acid (PP-g-pssa) membranes were characterized by using various methods. The morphology and structure of the PP-g-pssa membranes were analyzed with scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR) and energy dispersive spectrometer (EDS). The ion conductivity and methanol permeability were also measured. The ion conductivity of the PP-g-pssa membranes was higher and the methanol permeability of the laminated membrane was lower than that of Nafion membranes. The performance of the PP-g-pssa/Nafion laminated membranes was evaluated in a DMFC unit cell at 90 degrees C.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据