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题名:
Pulse radiolysis investigation of (OH)-O-center dot and H-center dot radicals initiated degradation reaction of sulfonated aromatics as model compounds for proton exchange membrane
作者: Zu, JH; Liu, RQ; Wei, YZ; Wang, PY; Fu, HY; Tang, FD; He, LF
刊名: RESEARCH ON CHEMICAL INTERMEDIATES
出版日期: 2016
卷号: 42, 期号:4, 页码:2883—2898
关键词: AQUEOUS-SOLUTIONS ; ALPHA-METHYLSTYRENE ; STYRENE SULFONATE ; STEADY-STATE ; FUEL-CELLS ; OH ; POLYMERIZATION ; DURABILITY
DOI: 10.1007/s11164-015-2184-1
通讯作者: Zu, JH (reprint author), Shanghai Jiao Tong Univ, Sch Nucl Sci & Engn, Shanghai 200240, Peoples R China.
文章类型: 期刊文献
英文摘要: In order to predict (center dot) OH and (center dot) H radicals initiated degradation of proton exchange membrane (PEM) based on polymers obtained by radiation-induced grafting of styrene or alpha-methylstyrene on different polyolefin, isopropyl benzene sulfonic acid (IPBS) and tert-butyl benzene sulfonic acid (TBBS) were taken as model compounds for PEM with and without alpha-H, respectively. Results indicated that (center dot) OH radicals played a vital role in PEM degradation. Eighty-nine percent of (center dot) OH radicals reacted with IPBS to form benzylic radicals by electron transfer and subsequent deprotonation reactions. Benzylic radicals can react with O-2 to form peroxyl radicals, which leads to PEM degradation. TBBS, without alpha-H, reacted with (center dot) OH or (center dot) H radicals, benzylic radicals would not be generated, and only adducts were formed. Adducts have less influence on the stability of TBBS than benzylic radicals. In this work, we elucidated that PEM, without alpha-H, with similar structures to TBBS, had a stronger resistance to oxidative degradation than PEM with alpha-H, with similar structures to IPBS.
收录类别: SCI
语种: 英语
WOS记录号: WOS:000372159200010
ISSN号: 0922-6168
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.sinap.ac.cn/handle/331007/25818
Appears in Collections:中科院上海应用物理研究所2011-2017年_期刊论文

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Recommended Citation:
Zu, JH,Liu, RQ,Wei, YZ,et al. Pulse radiolysis investigation of (OH)-O-center dot and H-center dot radicals initiated degradation reaction of sulfonated aromatics as model compounds for proton exchange membrane[J]. RESEARCH ON CHEMICAL INTERMEDIATES,2016-01-01,42(4):2883—2898.
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