Preparation of Poly(vinylbenzyl chloride)-grafted Fluoropolymer Films by Using Radiation Grafting Method

Geng, Fang; Sohn, Joon-Yong; Lee, Youn-Sik; Nho, Young-Chang; Shin, Junhwa

doi:10.7317/pk.2010.34.5.464

Cited by 6 publications

(2 citation statements)

References 10 publications

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“…4. Geng et al [145] did similar work and successfully grafted VBC onto several fluoropolymer films, including FEP, PEA, and ETFE, using a simultaneous irradiation method.…”

Section: Functional Monomersmentioning

confidence: 87%

A review of radiation-grafted polymer electrolyte membranes for alkaline polymer electrolyte membrane fuel cells

Zhou

Shao

Chen

et al. 2015

Journal of Power Sources

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“…4. Geng et al [145] did similar work and successfully grafted VBC onto several fluoropolymer films, including FEP, PEA, and ETFE, using a simultaneous irradiation method.…”

Section: Functional Monomersmentioning

confidence: 87%

A review of radiation-grafted polymer electrolyte membranes for alkaline polymer electrolyte membrane fuel cells

Zhou

Shao

Chen

et al. 2015

Journal of Power Sources

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“…So far, various fluorinated polymers, either perfluorinated such as poly(tetrafluoroethylene‐ co ‐hexafluoropropylene) (FEP), poly(tetrafluoroethylene‐ co ‐perfluoropropylvinyl ether), or partially fluorinated poly(ethylene‐ co ‐tetrafluoroethylene) (ETFE), and poly(vinylidene fluoride) have been utilized as grafting substrates owing to their excellent chemical and thermal stability. ETFE has been the most widely used partially fluorinated polymer owing to its higher radiation stability and superior mechanical properties compared to perfluorinated polymers, and it is also known to have better compatibility with the grafting components 7–10…”

Section: Introductionmentioning

confidence: 99%

Synthesis of poly((vinyloxy)ethanesulfonic acid)‐grafted ETFE membrane via radiation grafting and its characterization

Kinger

Sohn

et al. 2012

J of Applied Polymer Sci

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We report the synthesis of a new fuel cell membrane, poly((vinyloxy)ethanesulfonic acid)-grafted poly(ethylene-co-tetrafluoroethylene) (ETFE) film by simultaneous radiation grafting of 2-chloroethyl vinyl ether onto ETFE film followed by sulfonation. The effects of various irradiation conditions such as the solvents, dose rate, and monomer concentration on the degree of grafting were investigated in detail. The sulfonation procedure of the grafted ETFE films used to replace the chlorine group with a sulfonic acid group includes the following steps. The first step is the formation of thiouronium salt with thiourea, the second step is the hydrolysis with NaOH to form thiol, and the final step is an oxidation of thiol using hydrogen peroxide to achieve the desired sulfonic acid group. Fourier transform infrared spectroscopy (FTIR),x-ray photoelectron spectroscopy (XPS), and scanning electron microscopy-energy dispersive x-ray spectroscopy (SEM-EDX) instruments were used to confirm the chemical reaction at every step of the process. In addition, the thermal degradation behaviors of the original ETFE film, grafted ETFE film, and sulfonated membrane were investigated by thermogravimetric analysis. To elucidate the possible applications of poly((vinyloxy)ethanesulfonic acid)grafted ETFE membranes for direct methanol fuel cells, ion exchange capacity, water uptake, proton conductivity, and methanol permeability were investigated and compared with Nafion 212. V C 2012 Wiley Periodicals, Inc. J Appl Polym Sci 126: E349-E357, 2012

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Thermal behavior of poly(vinylbenzyl chloride)‐grafted poly(ethylene‐co‐tetrafluoroethylene) films

Song

Lee

Woo

et al. 2014

J Polym Sci B Polym Phys

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The effect of the degree of grafting (DOG) on the thermal behavior of poly(vinylbenzyl chloride)‐grafted poly(ethylene‐co‐tetrafluoroethylene) (ETFE‐g‐PVBC) films was investigated by differential scanning calorimetry (DSC), X‐ray diffraction (XRD), dynamic mechanical analysis (DMA), FT‐IR, and thermogravimetric analysis (TGA) instruments. Several ETFE‐g‐PVBC films with various degrees of grafting, including 10, 24, 41, 60, and 94%, were prepared using a radiation grafting technique. The DSC and XRD results of the ETFE‐g‐PVBC films revealed that the crystallinity of the films decreased as the DOG increased. The DMA and FT‐IR results of the films indicated that a crosslinking reaction occurred at temperatures above 250 °C. In the thermal properties of the grafted films, an increase in the DOG led to an increase in the decomposition temperature. The activation energy (Ea) of the thermal decomposition was calculated using Kissinger's equation from TGA results. The Ea value of the PVBC graft chain was found to increase as the DOG increased, indicating that the crosslinking reaction of ETFE‐g‐PVBC films increased with an increase in the DOG during the thermal degradation process. © 2014 Wiley Periodicals, Inc. J. Polym. Sci., Part B: Polym. Phys. 2014, 52, 517–525

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Preparation of Poly(vinylbenzyl chloride)-grafted Fluoropolymer Films by Using Radiation Grafting Method

Cited by 6 publications

References 10 publications

A review of radiation-grafted polymer electrolyte membranes for alkaline polymer electrolyte membrane fuel cells

A review of radiation-grafted polymer electrolyte membranes for alkaline polymer electrolyte membrane fuel cells

Synthesis of poly((vinyloxy)ethanesulfonic acid)‐grafted ETFE membrane via radiation grafting and its characterization

Thermal behavior of poly(vinylbenzyl chloride)‐grafted poly(ethylene‐co‐tetrafluoroethylene) films

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