TY - JOUR
T1 - Optical properties of polyimides films treated by nanosecond pulsed electrical discharges in water
AU - Sava, Ion
AU - Kruth, Angela
AU - Kolb, Juergen F.
AU - Miron, Camelia
N1 - Funding Information:
This research has received funding from the European Union Seventh Framework Programme (FP7=2007-2013) under grant agreement No. 316216. The authors are grateful to Dr. Jörn Winter for FTIR data.
Publisher Copyright:
© 2018 The Japan Society of Applied Physics.
PY - 2018/1
Y1 - 2018/1
N2 - Fluorinated polyimide films containing cobalt chloride based on hexafluoroisopropylidenediphthalic dianhydride and 4,4′-diamino-3,3′-dimethyl diphenylmethane were treated by nanosecond pulsed electrical discharges generated in distilled water. The polyimide films have been characterized by Fourier transform infrared (FTIR) spectra and contact angle measurements, optical transmission spectroscopy, and fluorescence spectroscopy. Significant changes in some intrinsic fluorescence features, such as the intensity and position of the emission peak, have been observed during exposure to water plasma. These effects have been considered to correlate with the development of specific chemical interactions between the liquid and the macromolecules, including the formation of hydrogen bridges. A slight increase in surface hydrophobicity was observed after plasma treatment. FTIR spectra showed a decrease in the intensity of the absorption band and an opening of the imide ring, depending on the treatment time.
AB - Fluorinated polyimide films containing cobalt chloride based on hexafluoroisopropylidenediphthalic dianhydride and 4,4′-diamino-3,3′-dimethyl diphenylmethane were treated by nanosecond pulsed electrical discharges generated in distilled water. The polyimide films have been characterized by Fourier transform infrared (FTIR) spectra and contact angle measurements, optical transmission spectroscopy, and fluorescence spectroscopy. Significant changes in some intrinsic fluorescence features, such as the intensity and position of the emission peak, have been observed during exposure to water plasma. These effects have been considered to correlate with the development of specific chemical interactions between the liquid and the macromolecules, including the formation of hydrogen bridges. A slight increase in surface hydrophobicity was observed after plasma treatment. FTIR spectra showed a decrease in the intensity of the absorption band and an opening of the imide ring, depending on the treatment time.
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U2 - 10.7567/JJAP.57.0102BF
DO - 10.7567/JJAP.57.0102BF
M3 - Review article
AN - SCOPUS:85040337437
SN - 0021-4922
VL - 57
JO - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
JF - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
IS - 1
M1 - 0102BF
ER -