Enhancing surface energy of polycarbonate by atmospheric pressure plasma jet

Le Thi Quynh Xuan; Nguyen Tuan Minh; Nguyen Van Chuc; Dao Nguyen Thuan

doi:10.51316/jca.2021.149

Authors

Le Thi Quynh Xuan Laboratory of Plasma Technology, Institute of Materials Sciences (IMS), Vietnam Academy of Science and Technology (VAST), Hanoi, Vietnam | Graduate University of Science and Technology (GUST), VAST
Nguyen Tuan Minh Faculty of Engineering Physics, Hanoi University of Science and Technology (HUST)
Nguyen Van Chuc Laboratory of Carbon Nanomaterials, Institute of Materials Sciences (IMS), Vietnam Academy of Science and Technology (VAST), Hanoi, Vietnam
Dao Nguyen Thuan Laboratory of Plasma Technology, Institute of Materials Sciences (IMS), Vietnam Academy of Science and Technology (VAST), Hanoi, Vietnam | Graduate University of Science and Technology (GUST), VAST

DOI:

https://doi.org/10.51316/jca.2021.149

Keywords:

polycarbonate, atmospheric pressure plasma jet, water contact angle, plasma effect

Abstract

A plasma jet system with floating electrode configuration was setup to treat polycarbonate (PC) surface. Enhancement in energy surface and the duration of the effect by plasma treatment were characterized by water contact angles (WCA) of water droplets on the PC surface. Morphological changes of the surface were examined by AFM. The results show that after 60 seconds of treatment by plasma, the WCA decreased from 74° to 38° and the PC surface was not physically damaged. The average change of WCA by plasma treatment is 40% and remained at 20% after 14 days with a treatment time greater than 180 seconds.

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