27. Sound localization difficulty affects early and late processing of auditory spatial information—Investigation using the dipole tracing method

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• 作者：Nobuyoshi Koiwa ; Yuri Masaoka ; Ikuo Homma
• 关键词：Ethylene oxide ; Cross-linking ; Matrimid 5218 ; Membrane ; Carbon dioxide
• 刊名：Clinical Neurophysiology
• 出版年：2008
• 期刊代码：61_13882457
• 类别：med
• 出版时间：June 2008
• 卷：119
• 期：6
• 页码：e81
• 文件大小：36 K

摘要

The novel cross-linker, poly(propylene glycol) block poly(ethylene glycol) block poly(propylene glycol) diamine (PPG/PEG/PPGDA), was employed to chemically cross-link Matrimid 5218 at room temperature. The cross-linking reaction process was monitored by FTIR. The XRD was used to indicate the changing of the polymer structure by cross-linking reaction. The effects of the cross-linking reaction on mechanical performance, gel content and H₂, CO₂, N₂ and CH₄ gas transport properties of the cross-linked Matrimid membranes were investigated. The cross-linked Matrimid membranes display excellent CO₂ permeability and CO₂/light gas selectivity compared with the uncross-linked Matrimid membrane. Finally, the potential application of the cross-linked Matrimid membranes for CO₂/light gas separation was explored.