Enhancement of Poly(vinyl chloride) Electrolyte Membrane by Its Exposure to an Atmospheric Dielectric Barrier Discharge Followed by Grafting with Polyacrylic Acid
作者： Mohamed Abu-Saied , Alaa Fahmy , Nasser Morgan , Walid Qutop , Hassan Abdelbary
DOI: 10.1007/S11090-019-10017-6
关键词: Thermogravimetry 、 Membrane 、 Acrylic acid 、 Electrolyte 、 Chemical engineering 、 Vinyl chloride 、 Polyacrylic acid 、 Dielectric barrier discharge 、 Chemistry 、 Contact angle
摘要: A poly(vinyl chloride) (PVC) membrane was exposed to atmospheric-pressure dielectric barrier discharge and subsequently wet-chemically grafted with poly(acrylic acid) (PAA) then consumed poly(ethyleneimine) (PEI). The thus modified characterized by measurement of the static water contact angle, scanning electron microscopy, infrared spectroscopy (ATR-FTIR), thermogravimetry (TGA) electrolytic responses. TGA favors a thermally stable PVC membrane. ATR-FTIR revealed existence an ultra-thin PAA layer onto surface plasma-modified ion exchange capacity (PVC–PAA) sample close that additionally aminated PEI for 12 h or more (PVC–PAA–PEI). It means PVC–PAA membranes do not need necessarily further modifications. As concomitant helpful effect, it observed swelling degree reduced after plasma exposure due plasma-induced crosslinking.
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