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In this paper,polyimide(PI)films are modified using an atmospheric pressure plasma generated by a dielectric barrier discharge(DBD)in argon.Surface performance of PI film and its dependence on exposure time from 0 s to 300 s are investigated by dynamic water contact angle(WCA),field emission scanning electron microscopy(FESEM),and Fourier transform infrared spectroscopy in attenuated total multiple reflection mode(FTIR-ATR).The study demonstrates that dynamic WCA exhibits a minimum with 40 s plasma treatment,and evenly distributed nano-dots and shadow concaves appeared for 40 s and 12 s Ar plasma treatment individually.A short period of plasma modification can contribute to the scission of the imide ring and the introduction of C-O and C=O(-COOH)by detailed analysis of FTIR-ATR.
In this paper, polyimide (PI) films are modified using an atmospheric pressure plasma generated by a dielectric barrier discharge (DBD) in argon. Surface performance of PI film and its dependence on exposure time from 0 s to 300 s are investigated by dynamic water contact scale (WCA), field emission scanning electron microscopy (FESEM), and Fourier transform infrared spectroscopy in attenuated total multiple reflection mode (FTIR-ATR). The study demonstrates that dynamic WCA exhibits a minimum with 40 s plasma treatment, and even distributed nano-dots and shadow concaves for 40 s and 12 s Ar plasma treatment individually. A short period of plasma modification can contribute to the scission of the imide ring and the introduction of CO and C = O (-COOH) by detailed analysis of FTIR-ATR.