A poly(vinyl chloride) (PVC) membrane was exposed to atmospheric-pressure dielectric barrier discharge and subsequently wet-chemically grafted with poly(acrylic acid) (PAA) and then consumed with poly(ethyleneimine) (PEI). The thus modified membrane was characterized by measurement of the static water contact angle, by scanning electron microscopy, infrared spectroscopy (ATR-FTIR), thermogravimetry (TGA) and electrolytic responses. The TGA favors a thermally stable grafted PVC membrane. The ATR-FTIR revealed the existence of an ultra-thin PAA layer grafted onto the surface of the plasma-modified PVC membrane. The ion exchange capacity measurement of the grafted poly(vinyl chloride) (PVC–PAA) sample was close to that of additionally wet-chemically aminated with PEI for 12 h or more (PVC–PAA–PEI). It means that PVC–PAA membranes do not need necessarily further modifications. As concomitant helpful effect, it was observed that the swelling degree of the PVC membrane was reduced after plasma exposure due to plasma-induced crosslinking.

中文翻译：

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聚（氯乙烯）电解质膜暴露于大气介电势垒放电后接枝聚丙烯酸的增强

将聚（氯乙烯）（PVC）膜暴露于大气压介质阻挡放电，随后用聚（丙烯酸）（PAA）湿化学接枝，然后用聚（乙烯亚胺）（PEI）消耗。如此改性的膜通过静态水接触角的测量、扫描电子显微镜、红外光谱(ATR-FTIR)、热重分析(TGA)和电解响应来表征。TGA 有利于热稳定的接枝 PVC 膜。ATR-FTIR 表明存在接枝到等离子改性 PVC 膜表面的超薄 PAA 层。接枝聚（氯乙烯）（PVC-PAA）样品的离子交换容量测量接近于用 PEI 湿化学胺化 12 小时或更长时间（PVC-PAA-PEI）。这意味着 PVC-PAA 膜不需要进一步修改。作为伴随的有益效果，观察到由于等离子体诱导的交联，在等离子体暴露后 PVC 膜的溶胀度降低。