Synthesis of alkylated sulfonated poly (arylene sulfone)s for proton exchange membranes연료전지를 위한 알킬화 폴리술폰 멤브레인의 개발에 관한 연구

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The attachment of flexible spacers into aromatic polymers is a design approach that is used for improving processability of aromatic polymers. The concept is attractive because it enables the creation of aromatic polymers with improved processability by just introducing side chain as pendant. Here we report that new bisphenol A derivatives bearing alkyl chain having different length obtained by radical polymerization can readily make novel poly (arylene sulfone) with aromatic dihalides and aromatic dioles. The attachment of flexible alkyl groups into sulfonated poly(arylene sulfone)s enable to control of glass transition temperatures, $T_g$, and surface morphology of sulfoanted poly(arylene sulfone)s. The alkylated sulfonated poly(arylene sulfone)s had low $T_g s$, high hydrophobic surfaces, high modulus, improved methanol permeability, and high ion conductivity compared to the neat polymer or Nafion 115. The method is attractive because it enables the creation of aromatic polymers with improved processability by just introducing side chain as pendant. This novel alkylation method is expected to be applicable to other arylene based proton conductive polymers.
Advisors
Kim, Sang-Oukresearcher김상욱researcher
Description
한국과학기술원 : 신소재공학과,
Publisher
한국과학기술원
Issue Date
2009
Identifier
327307/325007  / 020074189
Language
eng
Description

학위논문(석사) - 한국과학기술원 : 신소재공학과, 2009. 8., [ vi, 42 p. ]

Keywords

Poly (arylene sulfone); Proton Exchange Membranes; Synthesis; Fuel Cell; 폴리술폰; 멤브레인; 연료전지; 합성

URI
http://hdl.handle.net/10203/51334
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=327307&flag=dissertation
Appears in Collection
MS-Theses_Master(석사논문)
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