TY - GEN
T1 - New proton conductive composite materials with inorganic and styrene grafted and sulfonated vdf/ctfe fluoropolymers
AU - Chung, Tze-chiang
AU - Chalkova, Elena
AU - Zhang, Zhicheng
AU - Wang, Chunmei
AU - Fedkin, Mark Valentinovich
AU - Komarneni, Sridhar
AU - Payne, Terry L.
AU - Lvov, Serguei
PY - 2008/12/1
Y1 - 2008/12/1
N2 - A new functionalized and crosslinkable P(VDF-CTFE) (vinylidene fluoride/chlorotrifluoroethylene copolymer) was synthesized using functional borane/oxygen initiator. and grafted with styrene (St) via atom transfer radical polymerization followed by partial or the whole sulfonation of phenyl groups. Materials with different composition and level of sulfonation were prepared and tested to balance proton conductivity, water swelling, and flexibility. The addition of hexafluoropropylene (HFP) to copolymer improved plasticity and swelling without compromising the conductivity. To understand the effect of different membrane components on its properties, thermal properties of composites have been investigated. It was found that the content of CTFE units, St and sulfonic groups effected membrane flexibility and swelling. Several classes of inorganic proton conductors with high water retention capability, including mesoporous materials (sulfonated alumina, zirconia, titania) were synthesized and tested for conductivity to introduce into polymeric material to improve membrane mechanical properties and conductivity.
AB - A new functionalized and crosslinkable P(VDF-CTFE) (vinylidene fluoride/chlorotrifluoroethylene copolymer) was synthesized using functional borane/oxygen initiator. and grafted with styrene (St) via atom transfer radical polymerization followed by partial or the whole sulfonation of phenyl groups. Materials with different composition and level of sulfonation were prepared and tested to balance proton conductivity, water swelling, and flexibility. The addition of hexafluoropropylene (HFP) to copolymer improved plasticity and swelling without compromising the conductivity. To understand the effect of different membrane components on its properties, thermal properties of composites have been investigated. It was found that the content of CTFE units, St and sulfonic groups effected membrane flexibility and swelling. Several classes of inorganic proton conductors with high water retention capability, including mesoporous materials (sulfonated alumina, zirconia, titania) were synthesized and tested for conductivity to introduce into polymeric material to improve membrane mechanical properties and conductivity.
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M3 - Conference contribution
AN - SCOPUS:77955865470
SN - 9780841269941
T3 - ACS National Meeting Book of Abstracts
BT - American Chemical Society - 236th National Meeting and Exposition, Abstracts of Scientific Papers
T2 - 236th National Meeting and Exposition of the American Chemical Society, ACS 2008
Y2 - 17 August 2008 through 21 August 2008
ER -