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Poly(arylene ether)s with Truly Pendant Benzene Sulfonic Acid Groups

Abdellatif, Mohamed Moustafa
http://rave.ohiolink.edu/etdc/view?acc_num=wright1222544981

Abstract Details

2008, Master of Science (MS), Wright State University, Chemistry.
A series of new sulfonated poly(arylene ether)s containing one sulfonic acid group, located on a pendant phenyl sulfonyl moiety, at every repeat unit was synthesized using 3-sulfonated-3', 5'-difluorophenyl Sulfone, 4, and a variety of bisphenols. A conventional nucleophilic aromatic substitution (NAS) was utilized for the homopolymerization and copolymerization reactions. Polymerization reactions of 4 in NMP at 180 °C provided the corresponding linear sulfonated poly(arylene ether)s, s-PAEs, with number average molecular weight, Mn, ranging from 10,000 to 38,000 Daltons. All of the polymers were characterized by 1H and 13C NMR spectroscopy, thermogravimetric analysis (TGA), and differential scanning calorimetry (DSC). The Tg values ranged from 264 °C to 296 °C for the salt form and 183 °C to 240 °C for the acid form. The Td5% values ranged from 311 °C to 472°C for the salt form and 307 °C to 367 °C for the acid form. All of the samples possessed excellent thermal stability. Furthermore, higher accessibility of the sulfonic acid groups was evident by observing increased solubility in hot water, which is presumed to construct a more efficient conductive pass way, thus increasing the proton conductivity of the newly developed systems. The polymer samples also formed tough peelable films when DMSO solutions were slowly evaporated on a glass slide. These new sulfonated polymers possess good properties and are excellent candidates for proton exchange membrane in fuel cell applications.
Eric Fossum, PhD (Advisor)
Kenneth Turnbull, PhD (Committee Chair)
Daniel M. Ketcha, PhD (Committee Member)
66 p.
Polymers
Sulfone; sulfonated; ACID GROUPS; polymers; proton; bisphenols; SULFONIC ACID GROUPS

Recommended Citations

Citations

  • Abdellatif, M. M. (2008). Poly(arylene ether)s with Truly Pendant Benzene Sulfonic Acid Groups [Master's thesis, Wright State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=wright1222544981

    APA Style (7th edition)

  • Abdellatif, Mohamed. Poly(arylene ether)s with Truly Pendant Benzene Sulfonic Acid Groups. 2008. Wright State University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=wright1222544981.

    MLA Style (8th edition)

  • Abdellatif, Mohamed. "Poly(arylene ether)s with Truly Pendant Benzene Sulfonic Acid Groups." Master's thesis, Wright State University, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=wright1222544981

    Chicago Manual of Style (17th edition)

wright1222544981
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© 2008, all rights reserved.
This open access ETD is published by Wright State University and OhioLINK.