Open AccessSurface modification of polyamide by 50 Hz dielectric barrier discharge (DBD) produced in air at atmospheric pressure
Author(s) -
Rajesh Prakash Guragain,
Hom Bahadur Baniya,
Santosh Dhungana,
Bishnu Prasad Pandey,
Ujjwal Joshi,
Deepak Prasad Subedi
Publication year - 2021
Publication title -
bibechana
Language(s) - English
Resource type - Journals
ISSN - 2382-5340
DOI - 10.3126/bibechana.v18i1.27650
Subject(s) - dielectric barrier discharge , wetting , contact angle , atmospheric pressure , dielectric , surface modification , materials science , surface energy , polyamide , atmospheric pressure plasma , composite material , plasma , chemical engineering , analytical chemistry (journal) , polymer chemistry , chemistry , optoelectronics , chromatography , meteorology , physics , quantum mechanics , engineering
Industrial applications of the dielectric barrier discharge (DBD) have a long tradition. However, lack of understanding in some of its fundamental issues, such as the stochastic behaviors, is still a challenge for DBD researchers. The work was carried out at line frequency, 15 kV and at atmospheric pressure. This work focuses on the study of the electrical and optical characteristics of DBD at atmospheric pressure to determine a suitable condition for utilization of the device for surface modification of polyamides (PA) (Nylon 6/6). In this work, films were treated by dielectric barrier discharge and the effects on the morphology and chemistry of the material was studied. Surface characteristics were examined via contact angle measurements and SEM. The wettability tests revealed the improvement of the hydrophilic character of the surface of polyamide films as the water contact angle measured after the plasma treatments significantly decreased. The corresponding changes of the total surface energy revealed a significant increase in its polar component. The improvement of the wettability of PA strongly depends on the treatment time. The outcomes of the experiments proved that the modification of surface properties via plasma treatment reach to its saturation point after certain treatment time thus reducing the necessity of further treatment.
BIBECHANA 18 (2021) 19-25