Abstract
AbstractStructurally well‐defined poly(acrylic acid)s have been direct‐grafted on polytetrafluoroethylene (PTFE) films by a quasi‐glow discharge (QGD) using argon and acrylic acid. X‐ray photoelectron spectroscopy (XPS) and attenuated total reflection Fourier transform infrared (ATR‐FTIR) spectroscopy provided obvious evidence for a high retention of the carboxylic acid group on PTFE surface, up to 77.5% of all carboxylic acid functional group. Optical emission spectroscopy (OES) indicated that polymerization proceeds predominantly via an opening of the CC bonds. The modified PTFE films were found to exhibit low water contact angle values and good ageing behavior. The mechanisms of plasma‐induced direct‐graft polymerization of acrylic acid on PTFE films were discussed combining with the real‐time electrical and optical diagnostics of the QGD plasma.magnified image
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