TY - JOUR
T1 - Effect of Alkanediol Additives on the Properties of Polyphenylene-Based Proton Exchange Membranes
AU - Long, Zhi
AU - Zhang, Yaojian
AU - Miyake, Junpei
AU - Miyatake, Kenji
N1 - Funding Information:
This work was partly supported by the New Energy and Industrial Technology Development Organization (NEDO) through the SPer-FC Project and by the Ministry of Education, Culture, Sports, Science and Technology (MEXT) Japan through a Grant-in-Aid for Scientific Research (KAKENHI JP18K04746, JP18H02030, JP18H05515, and JP18K19111).
Funding Information:
This work was partly supported by the New Energy and Industrial Technology Development Organization (NEDO) through the SPer-FC Project and by the Ministry of Education, Culture, Sports Science and Technology (MEXT) Japan through a Grant-in-Aid for Scientific Research (KAKENHI JP18K04746, JP18H02030, JP18H05515, and JP18K19111).
Publisher Copyright:
© 2019 American Chemical Society.
PY - 2019/6/12
Y1 - 2019/6/12
N2 - Novel sulfonated and carboxylated polyphenylene (SPP-QP-BA) containing additives were synthesized as proton exchange membranes. As the additives, linear and flexible alkanediols with various chain lengths (Cn: n = 4 for butyl, n = 8 for octyl, and n = 12 for dodecyl) were investigated. SPP-QP-BA(Cn) composite membranes possessed nanoscale phase-separated morphologies. As the alkyl chain length increased, the ionic domain size, water uptake, and proton conductivity slightly increased. Although the effect of the chain length on these properties was rather minor, the elongation property was affected much by the alkyl chain length and significantly increased with decreasing the alkyl chain length. The SPP-QP-BA(C4) membrane having the shortest alkyl chain length displayed the best mechanical property (yield stress: 43 MPa; maximum strain: 99%), which was much higher than that (yield stress: 39 MPa; maximum strain: 68%) of our previous SPP-QP. In addition, SPP-QP-BA(Cn) membranes showed excellent chemical stability similar to the SPP-QP.
AB - Novel sulfonated and carboxylated polyphenylene (SPP-QP-BA) containing additives were synthesized as proton exchange membranes. As the additives, linear and flexible alkanediols with various chain lengths (Cn: n = 4 for butyl, n = 8 for octyl, and n = 12 for dodecyl) were investigated. SPP-QP-BA(Cn) composite membranes possessed nanoscale phase-separated morphologies. As the alkyl chain length increased, the ionic domain size, water uptake, and proton conductivity slightly increased. Although the effect of the chain length on these properties was rather minor, the elongation property was affected much by the alkyl chain length and significantly increased with decreasing the alkyl chain length. The SPP-QP-BA(C4) membrane having the shortest alkyl chain length displayed the best mechanical property (yield stress: 43 MPa; maximum strain: 99%), which was much higher than that (yield stress: 39 MPa; maximum strain: 68%) of our previous SPP-QP. In addition, SPP-QP-BA(Cn) membranes showed excellent chemical stability similar to the SPP-QP.
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U2 - 10.1021/acs.iecr.9b01564
DO - 10.1021/acs.iecr.9b01564
M3 - Article
AN - SCOPUS:85067476718
SN - 0888-5885
VL - 58
SP - 9915
EP - 9920
JO - Industrial & Engineering Chemistry Research
JF - Industrial & Engineering Chemistry Research
IS - 23
ER -