Radiation-induced grafting of styrene onto ultra-high molecular weight polyethylene powder for polymer electrolyte fuel cell application

Sherazi, Tauqir A.; Ahmad, Shujaat; Kashmiri, Muhammad Akram; Kim, Dae Sik; Guiver, Michael D.

doi:10.1016/j.memsci.2009.01.052

Cited by 45 publications

(22 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…1 (secondary axis). This trend is attributed to swelling behavior of PE during grafting and availability of the monomer to the grafting sites [27].…”

Section: Effect Of the Irradiation Dose And Monomer Concentration On mentioning

confidence: 99%

“…Grafting on powder is considered a good experimental strategy for improving the uniformity and distribution of grafted vinyl benzene monomer throughout the amorphous sites of the polymer, where grafting takes place, which subsequent to film formation, allows a more uniform graft distribution of alkylamine groups [27][28]. The relationship between the DG of VBC into PE at 60 ºC with different pre-irradiation doses and monomer concentrations were studied as presented in Fig.…”

Section: Effect Of the Irradiation Dose And Monomer Concentration On mentioning

confidence: 99%

See 1 more Smart Citation

Polyethylene-based radiation grafted anion-exchange membranes for alkaline fuel cells

Sherazi

Sohn

Lee

et al. 2013

Journal of Membrane Science

Self Cite

View full text Add to dashboard Cite

/npsi/ctrl?lang=en http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/ctrl?lang=fr Access and use of this website and the material on it are subject to the Terms and Conditions set forth at http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/jsp/nparc_cp.jsp?lang=en NRC Publications Archive Archives des publications du CNRCThis publication could be one of several versions: author's original, accepted manuscript or the publisher's version. / La version de cette publication peut être l'une des suivantes : la version prépublication de l'auteur, la version acceptée du manuscrit ou la version de l'éditeur. For the publisher's version, please access the DOI link below./ Pour consulter la version de l'éditeur, utilisez le lien DOI ci-dessous.http://dx.doi.org/10.1016/j.memsci.2013.03.053 Science, 441, pp. 148-157, 2013-04-10 Polyethylene-based radiation grafted anion-exchange membranes for alkaline fuel cells Sherazi, Tauqir A.; Sohn, Joon Yong; Lee, Young Moo; Guiver, Michael D. Journal of Membrane AbstractVinyl benzyl chloride was grafted onto ultra-high molecular weight polyethylene powder (UHMWPE) by radiation grafting. The grafted powder was subsequently fabricated into membrane by melt pressing. The effect of absorbed radiation dose on the degree of grafting (DG) is discussed. The melt-flow properties of PVBC grafted PE with low degree of grafting was conducive to forming homogeneous pore-free membranes, which was confirmed by scanning electron microscopic analysis. The grafted polyethylene membranes were post functionalized with trimethylamine, followed by alkalization to obtain anion-exchange membranes (AEMs). The structures of the resulting AEMs were characterized by Fourier transform infrared spectroscopy, which showed that the grafted membranes were successfully functionalized. The properties of the AEMs, including ion exchange capacity, water uptake, in-plane swelling, methanol uptake, methanol permeability, and hydroxide ion conductivity were investigated. The AEMs showed reasonably good chemical stability, as evidenced by the ion exchange capacity being maintained for a long duration, even in highly alkaline conditions. The membranes exhibited a maximum ionic conductivity of 47.5 mS cm −1 at 90 °C (30 mS cm -1 at 60 °C).Methanol permeability was found to be in the order of 10 −8 cm 2 s -1 , which is considerably lower than that of Nafion ® . The membranes have useful properties consistent with anion exchange membranes suitable for alkaline fuel cells.

show abstract

“…1 (secondary axis). This trend is attributed to swelling behavior of PE during grafting and availability of the monomer to the grafting sites [27].…”

Section: Effect Of the Irradiation Dose And Monomer Concentration On mentioning

confidence: 99%

Section: Effect Of the Irradiation Dose And Monomer Concentration On mentioning

confidence: 99%

Polyethylene-based radiation grafted anion-exchange membranes for alkaline fuel cells

Sherazi

Sohn

Lee

et al. 2013

Journal of Membrane Science

Self Cite

View full text Add to dashboard Cite

show abstract

“…Methanol concentrations were determined by 1 H NMR spectroscopy. The methanol permeability was calculated [26].…”

Section: Methanol Permeabilitymentioning

confidence: 99%

Radiation-grafted membranes based on polyethylene for direct methanol fuel cells

Sherazi

Guiver

Kingston

et al. 2010

Journal of Power Sources

Self Cite

View full text Add to dashboard Cite

Styrene was grafted onto ultrahigh molecular weight polyethylene powder (UHMWPE) by gamma irradiation using a 60 Co source. Compression moulded films of selected pre-irradiated styrene-grafted ultrahigh molecular weight polyethylene (UHMWPE-g-PS) were post-sulfonated to the sulfonic acid derivative (UHMWPE-g-PSSA) for use as proton exchange membranes (PEMs). The sulfonation was confirmed by Xray photoelectron spectroscopy (XPS). The melting and flow properties of UHMWPE and UHMWPE-g-PS are conducive to forming homogeneous pore-free membranes. Both the ion conductivity and methanol permeability coefficient increased with degree of grafting, but the grafted membranes showed comparable or higher ion conductivity and lower methanol permeability than Nafion ® 117 membrane. One UHMWPE-g-PS membrane was fabricated into a membrane-electrode assembly (MEA) and tested as a single cell direct methanol fuel cell (DMFC). Low membrane cost and acceptable fuel cell performance indicate that UHMWPE-g-PSSA membranes could offer an alternative approach to perfluorosulfonic acidtype membranes for DMFC.Crown

show abstract

“…The use of polymer powder substrates for preparation of proton exchange membranes has been recently reported [96][97][98][99]. The powder substrates offer a better penetration for monomer to the active sites formed upon irradiation consequently higher and homogenous graft levels can be achieved [72,97].…”

Section: Polymer Powder Substratesmentioning

confidence: 99%

Radiation-grafted materials for energy conversion and energy storage applications

Nasef

Gürsel

Karabelli

et al. 2016

Progress in Polymer Science

View full text Add to dashboard Cite

Radiation-induced grafting of styrene onto ultra-high molecular weight polyethylene powder for polymer electrolyte fuel cell application

Cited by 45 publications

References 42 publications

Polyethylene-based radiation grafted anion-exchange membranes for alkaline fuel cells

Polyethylene-based radiation grafted anion-exchange membranes for alkaline fuel cells

Radiation-grafted membranes based on polyethylene for direct methanol fuel cells

Radiation-grafted materials for energy conversion and energy storage applications

Contact Info

Product

Resources

About