摘要：Cover: A one-step direct-graft polymerization of acrylic acid with a high retention of carboxylic acid groups on polytetrafluoroethylene (PTFE) films is achieved by using argon/acrylic acid quasi-glow discharge plasma at atmospheric pressure. The modified PTFE films exhibit low water contact angle values and good ageing effects. Further details can be found in the article by J. Wan, S. Wang,* M. Song, X. Jia, and J. Yang on page 825.
摘要：Structurally 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.A new approach for PTFE film surface modification by plasma-induced direct-grafting using argon and acrylic acid at atmospheric pressure is reported. High retention of the carboxylic acid group is demonstrated by XPS and ATR-FTIR spectroscopies. The modified PTFE films are found to exhibit low water contact angle values and good ageing effects.