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Facile synthesis and properties of a cation exchange membrane with bifunctional groups prepared by pre-irradiation graft copolymerization
RSC Advances ( IF 3.9 ) Pub Date : 2018-07-19 00:00:00 , DOI: 10.1039/c8ra03472a Jianhua Zu 1 , Fangdong Tang 2 , Linfeng He 2 , Lingxiao Fu 1
RSC Advances ( IF 3.9 ) Pub Date : 2018-07-19 00:00:00 , DOI: 10.1039/c8ra03472a Jianhua Zu 1 , Fangdong Tang 2 , Linfeng He 2 , Lingxiao Fu 1
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A new type of a cation exchange membrane named ETFE-g-poly(AA-co-SSS) with bifunctional groups was synthesized by a one-step method. Its preparation by an electron beam-induced pre-irradiation grafting method and the effects of reaction temperature, monomer concentration, pH value of the grafting solution, storage time and temperature of the irradiated poly(ethylene-alt-tetrafluoroethylene) (ETFE) films on the grafting yield were studied. A total concentration of 2 mol L−1 of monomers was found to be beneficial for acrylic acid (AA) and sodium styrene sulfonate (SSS) co-grafting onto the ETFE films. Infrared spectroscopic analysis of the grafted membrane confirmed the existence of sulfonate and carboxylic acid groups. The contact angle of the grafted membrane decreased from 94.3 to 46.7° with the increase in grafting yield. The higher the grafting yield, the faster the response and recovery rate with respect to humidity. AFM images showed that the diameter of the grafted chains on the surface of ETFE membranes was about 30 nm. The voltage of the grafted membrane was stable after 100 cycles of charge–discharge; thus, the prepared membranes have great potentials to be used as separators in secondary batteries.
中文翻译：
预辐照接枝共聚制备双官能团阳离子交换膜的简便合成及性能
采用一步法合成了一种新型的双官能团阳离子交换膜ETFE- g -poly (AA- co -SSS)。采用电子束诱导预辐照接枝法制备其反应温度、单体浓度、接枝液pH值、辐照后聚(乙烯-丙-四氟乙烯)(ETFE)薄膜的储存时间和温度的影响嫁接产量进行了研究。总浓度为2 mol L -1发现单体的数量有利于丙烯酸 (AA) 和苯乙烯磺酸钠 (SSS) 共接枝到 ETFE 薄膜上。接枝膜的红外光谱分析证实了磺酸盐和羧酸基团的存在。随着接枝率的增加，接枝膜的接触角从94.3°下降到46.7°。接枝率越高，对湿度的响应和恢复速度越快。AFM 图像显示 ETFE 膜表面接枝链的直径约为 30 nm。接枝膜经过100次充放电循环后电压稳定；因此，制备的膜具有用作二次电池隔膜的巨大潜力。
更新日期：2018-07-19
中文翻译：
预辐照接枝共聚制备双官能团阳离子交换膜的简便合成及性能
采用一步法合成了一种新型的双官能团阳离子交换膜ETFE- g -poly (AA- co -SSS)。采用电子束诱导预辐照接枝法制备其反应温度、单体浓度、接枝液pH值、辐照后聚(乙烯-丙-四氟乙烯)(ETFE)薄膜的储存时间和温度的影响嫁接产量进行了研究。总浓度为2 mol L -1发现单体的数量有利于丙烯酸 (AA) 和苯乙烯磺酸钠 (SSS) 共接枝到 ETFE 薄膜上。接枝膜的红外光谱分析证实了磺酸盐和羧酸基团的存在。随着接枝率的增加，接枝膜的接触角从94.3°下降到46.7°。接枝率越高，对湿度的响应和恢复速度越快。AFM 图像显示 ETFE 膜表面接枝链的直径约为 30 nm。接枝膜经过100次充放电循环后电压稳定；因此，制备的膜具有用作二次电池隔膜的巨大潜力。
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