Preparation of a crosslinked polyelectrolyte membrane for fuel cells with an allyl methacrylate based two‐step reaction

Kishi, Akira; Umeda, Minoru

doi:10.1002/app.30693

Cited by 3 publications

(3 citation statements)

References 24 publications

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“…Examination of the AFM images revealed the presence of light and dark spots, which indicated that the membranes had a phase separation consisting of two types of domains. The light colored spots corresponded to the hydrophilic domains and the dark area depicted the hydrophobic regions [42,43]. It was observed that the hydrophilic domains of pristine membranes BPA-SPAES and 6F-SPAES in Figure 7A, B and E, F, respectively, seemed to be wider and more connected compared with their corresponding crosslinked membranes cr-BPA-SPAES-11 and cr-6F-SPAES-11 in Figure 7C, D and G, H, respectively.…”

Section: Morphology Of the Membranesmentioning

confidence: 87%

Sulfonated poly (arylene ether sulfone) proton exchange membranes for fuel cell applications

Kiran

Gaur

2015

Green Processing and Synthesis

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Sulfonated poly (arylene ether sulfone) membranes were synthesized by direct copolymerization of 4,4-bis (4-hydroxyphenyl) valeric acid, 4,4′-difluorodiphenyl sulfone and synthesized sulfonated 6F-bisphenol-A/ bisphenol-A as novel proton exchange membranes for fuel cell applications. Prepared membranes were subsequently crosslinked with synthesized 6F-bisphenol-A based epoxy resin (EFN) by thermal curing reaction keeping in view the resilience and toughness of the membranes. The structural characterization was done by using Fourier transform infrared (FTIR), 1 H nuclear magnetic resonance (NMR) and 13 C NMR techniques. Proton conductivity of the membranes was determined by a four-point probe technique. Methanol permeability was determined by using a diffusion cell in which concentration of the liquids was determined by UV-spectroscopic technique. The enhancement in mechanical properties determined by a universal testing machine and also a better oxidative stability were observed for the crosslinked membranes. However, a decrease in their water and methanol absorption, ion exchange capacity, proton conductivity and methanol permeability was observed. This was due to the reduction in the numbers of ionic channels in case of crosslinked membranes which was confirmed by carrying out morphological analysis of the membranes using atomic force microscopy. In addition, X-ray diffraction measurement by XPERT-PRO diffractometer was also used for structural characterization. Crosslinked membranes showed better thermal stability as determined by thermogravimetric analysis and differential scanning calorimetry.

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Section: Morphology Of the Membranesmentioning

confidence: 87%

Sulfonated poly (arylene ether sulfone) proton exchange membranes for fuel cell applications

Kiran

Gaur

2015

Green Processing and Synthesis

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“…Numerous copolymers based on the ionizable monomer 2-(acryloylamino)-2methylpropane-1-sulfonic acid (AMPS) or its sodium salt (NaAMPS) and mainly vinyl or acryl comonomers were prepared and characterized because of their various application possibilities (214)(215)(216)(217)(218)(219)(220)(221)(222)(223)(224). Some of them are mentioned in the following text.…”

Section: Poly(sulfonic Acid)s and Their Derivativesmentioning

confidence: 99%

“…The proton conductivity of this membrane is 7 × 10 − 2 S·cm − 1 at room temperature and approaches that of Nafion. The composite membrane material with an enhanced mechanical strength can be produced when the linear chain AMPS-TFEMA-AMA is cross-linked in a fluoroalkyl graft polymer solution (222).…”

Section: Poly(sulfonic Acid)s and Their Derivativesmentioning

confidence: 99%

Sulfur‐Containing Polymers

Kultys

2010

Encyclopedia of Polymer Science and Technology

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Sulfur-containing polymers, when considering their structure, make up a complex group of macromolecular compounds of varied and often remarkable features that determine their versatile applications.The presence of sulfur atoms in polymer structure, depending on the kind of functional group, can improve some important properties, such as mechanical, electrical, and optical, and then adhesion to metals, resistance to heat, chemicals, radiation, and bacteria, biocompatibility, and so on. These are their more important functional groups: sulfide -S-, polysulfide -S n -, sulfonyl -SO 2 -, sulfinyl -SO-, sulfo -SO 3 H, as well as some organic groups containing sulfur atoms, such as thioester -Sulfur-containing polymers can be used as high performance engineering plastics, chemically stable ion-exchange membranes in electromembrane processes, proton-conducting electrolytes, as well as optical, optoelectronic, and photochemical materials. Some polymers are employed in biomedical applications, for example, sulfopolymers as biomembranes and blood-compatible materials, and polysulfates and polysulfonates as antithrombotic or antiviral agents. The presence of sulfur, particularly in the form of disulfide bridges, plays an important role in biopolymers.The purpose of this review is mainly to present recent advances in the area of sulfur-containing polymers that may not yet have commercial applications. Nevertheless, older but still significant material has been included at the beginning of the discussion of each class. Poly(monosulfide)sPolymers containing a monosulfide linkage in both the main chain and the pendent group are the subject of many detailed studies. A few reviews of the synthesis and properties of all types of polymers have been published (1-4); like the one covering polymer with sulfur in the main chain that appeared in 1992 (3). Polysulfides with controlled and well-defined structures can be easily prepared. Nevertheless, the only commercial poly(monosulfide) is Ryton [Philips Petroleum Co., poly(thio-1,4-phenylene) more frequently referred to as poly(p-phenylene sulfide) or poly(phenylene sulfide) (PPS)].

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Advances in the high performance polymer electrolyte membranes for fuel cells

2012

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This critical review tersely and concisely reviews the recent development of the polymer electrolyte membranes and the relationship between their properties and affecting factors like operation temperature. In the first section, the advantages and shortcomings of the corresponding polymer electrolyte membrane fuel cells are analyzed. Then, the limitations of Nafion membranes and their alternatives to large-scale commercial applications are discussed. Secondly, the concepts and approaches of the alternative proton exchange membranes for low temperature and high temperature fuel cells are described. The highlights of the current scientific achievements are given for various aspects of approaches. Thirdly, the progress of anion exchange membranes is presented. Finally, the perspectives of future trends on polymer electrolyte membranes for different applications are commented on (400 references).

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Preparation of a crosslinked polyelectrolyte membrane for fuel cells with an allyl methacrylate based two‐step reaction

Cited by 3 publications

References 24 publications

Sulfonated poly (arylene ether sulfone) proton exchange membranes for fuel cell applications

Sulfonated poly (arylene ether sulfone) proton exchange membranes for fuel cell applications

Sulfur‐Containing Polymers

Advances in the high performance polymer electrolyte membranes for fuel cells

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