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http://dx.doi.org/10.7317/pk.2014.38.3.293

Hydrophilization of a Porous Polytetrafluoroethylene Supporter by Radiation Grafting Poly(Acrylonitrile-co-Sodium Allylsulfonate)  

Park, Byeong-Hee (Research Division for Industry and Environment, Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute)
Sohn, Joon-Yong (Research Division for Industry and Environment, Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute)
Yoon, Ki-Suk (Department of Polymer Science and Engineering, College of Engineering, Chungnam National University)
Shin, Junhwa (Research Division for Industry and Environment, Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute)
Publication Information
Polymer(Korea) / v.38, no.3, 2014 , pp. 293-298 More about this Journal
Abstract
We prepared hydrophilic porous supporters for the reinforced composite fuel cell membrane by radiation grafting of acrylonitrile (AN) and hydrophilic sodium allylsulfonate (SAS) into a porous polytetrafluoroethylene (PTFE) supporter. The physicochemical properties of the supporters prepared under various reaction conditions such as molar ratio of SAS/AN, monomer concentration, and irradiation dose were evaluated. FTIR was utilized to confirm the successful introduction of SAS/AN copolymer chains into the porous PTFE. The pores of the porous PTFE film were found to be decreased with an increase in the degree of grafting by using FE-SEM and gurley number. Furthermore, by analyzing the degree of grafting, contact angle, and TBO (toluidine blue O) uptake, the hydrophilicity of the prepared supporters was found to increase with an increase in the degree of grafting.
Keywords
radiation grafting; surface modification; porous PTFE; sodium allylsulfonate; acrylonitrile;
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