TY - JOUR
T1 - Synthesis and characterization of poly(vinylidene fluoride)-g-sulfonated polystyrene graft copolymers for proton exchange membrane
AU - Zhang, Zhicheng
AU - Chalkova, Elena
AU - Fedkin, Mark
AU - Wang, Chunmei
AU - Lvov, Serguei N.
AU - Komarneni, Sridhar
AU - Chung, T. C.
PY - 2010/4/30
Y1 - 2010/4/30
N2 - A series of poly(vinylidene fluoride)-g-sulfonated polystyrene (PVDF-g-SPS) graft copolymers were synthesized and examined with the focus of understanding how the polymer microstructure (backbone molecular weight, graft density, graft length, sulfonic acid concentration, ion exchange capacity, etc.) affects their morphology, water uptake and proton conductivity under various environmental conditions. The PVDF-g-SPS graft copolymer with a combination of a high PVDF backbone, low SPS graft density, and high graft length self-assembles into a microphase-separated morphology with randomly oriented ionic channels imbedded in the hydrophobic PVDF matrix, offers a high ion exchange capacity (IEC=2.75 mmol/g) and resistance to excessive water swelling, which yields notable higher proton conductivity than Nafion under 30-120°C and high humidity conditions.
AB - A series of poly(vinylidene fluoride)-g-sulfonated polystyrene (PVDF-g-SPS) graft copolymers were synthesized and examined with the focus of understanding how the polymer microstructure (backbone molecular weight, graft density, graft length, sulfonic acid concentration, ion exchange capacity, etc.) affects their morphology, water uptake and proton conductivity under various environmental conditions. The PVDF-g-SPS graft copolymer with a combination of a high PVDF backbone, low SPS graft density, and high graft length self-assembles into a microphase-separated morphology with randomly oriented ionic channels imbedded in the hydrophobic PVDF matrix, offers a high ion exchange capacity (IEC=2.75 mmol/g) and resistance to excessive water swelling, which yields notable higher proton conductivity than Nafion under 30-120°C and high humidity conditions.
UR - http://www.scopus.com/inward/record.url?scp=84904719307&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84904719307&partnerID=8YFLogxK
U2 - 10.1021/bk-2010-1040.ch003
DO - 10.1021/bk-2010-1040.ch003
M3 - Article
AN - SCOPUS:84904719307
SN - 0097-6156
VL - 1040
SP - 31
EP - 48
JO - ACS Symposium Series
JF - ACS Symposium Series
ER -