TY - JOUR
T1 - Synthesis and Performance of Sulfonated Poly (Arylene Ether Sulfone) as Proton Exchange Membrane
AU - Hefei Cai, Juan Xie, Guang Li & Jinli Qiao
JO - Journal of Fiber Bioengineering and Informatics
VL - 4
SP - 389
EP - 397
PY - 2012
DA - 2012/05
SN - 5
DO - http://doi.org/10.3993/jfbi12201204
UR - https://global-sci.org/intro/article_detail/jfbi/4890.html
KW - Sulfonated Poly(Arylene ether Sulfone)
KW - Proton Conductivity
KW - IEC
KW - PEM
AB - A series of novel sulfonated poly(arylene ether sulfone) (SPAES) were prepared by aromatic nucleophilic
substitution polycondensation from 4, 4'-dichlorodiphenylsulfone (DCDPS), 3, 3'-disulfonated-4, 4'-
dichlorodiphenylsulfone (SDCDPS) and 4-fluorophenyl hydroquinone and characterized by viscosity
measurement, FT-IR, ^1H-NMR and TG. The SPAES membranes consisting of different ratio of SDCDPS
to DCDPS were cast from their solutions. The alternating current (AC) proton conductivity of SPAES
membranes were carried on. The values of inherent viscosity ranging from 1.04 to 2.43 dl/g, implying that
SPAESs possessed high molecular weight. The results of TG analysis showed SPAESs were thermal stable
up to nearly 200 °C. The acid forms (H^+) of SPAES films were tough and ductile with the tensile strength
of 61-91 Mpa. The proton conductivity of SPAES films became higher with the increasing content of
SDCDPS in chain composition. SPAES with 50% SDCDPS showed the highest proton conductivity
of 0.205 S/cm at 80 °C. The water uptake and dimension swelling of SPAES membranes were also
measured. At the same time, SPAES showed excellent proton transportation stability when used at high
temperature. SPAESs had a higher water uptake than Nafion 115, while experimental IEC of SPAESs
in the range of 0.77-1.35 meq/g at 80 °C were very closed to the calculated ones.