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Surface modifications of aromatic polyimides by RFoxygen plasma and pulsed electrical discharges in water

C. MIRON1, I. SAVA1, M. AFLORI1,* , L. URSU1, I. JEPU2, C. POROSNICU2, C. P. LUNGU2, L. SACARESCU1, V. HARABAGIU1

Affiliation

  1. Institute of Macromolecular Chemistry ”Petru Poni”, Aleea Grigore Ghica Voda No 41A, Iasi 700487 Romania
  2. National Institute for Laser, Plasma and Radiation Physics INFLPR, Atomistilor Street No 409, Magurele, Ilfov, 077125, Romania

Abstract

Aromatic polyimide films were subjected to RF-oxygen plasma and pulsed electrical discharges in distilled water treatment for 2, 4, and 6 minutes. The film surface was investigated by means of Fourier Transform Infrared Spectroscopy, Atomic Force Microscopy, and contact angle measurements. It was observed that the polymer film surface became more hydrophilic after the RF-oxygen plasma exposure due to the formation of the oxygen-containing polar groups, while the sample surface became more hydrophobic after the water plasma treatment due to the surface segregation of the CF3 groups..

Keywords

Aromatic polyimides, RF-oxygen plasma, Water plasma, Surface modifications.

Submitted at: Oct. 20, 2013
Accepted at: Sept. 11, 2014

Citation

C. MIRON, I. SAVA, M. AFLORI, L. URSU, I. JEPU, C. POROSNICU, C. P. LUNGU, L. SACARESCU, V. HARABAGIU, Surface modifications of aromatic polyimides by RFoxygen plasma and pulsed electrical discharges in water, Journal of Optoelectronics and Advanced Materials Vol. 16, Iss. 9-10, pp. 1206-1211 (2014)