Surface modification of PVA thin film by nonthermal atmospheric pressure plasma for antifogging property

Ramhari Paneru, Pradeep Lamichhane, Bishwa Chandra Adhikari, Se Hoon Ki, Jinsung Choi, Jae Sung Kwon, Eun Ha Choi

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)

Abstract

In this work, a polyvinyl alcohol (PVA) thin film was modified by exposure to a dielectric barrier discharge argon plasma. The plasma was generated by a sinusoidal power supply with discharge voltage of 4.75 kV (rms), and frequency of 30 kHz at duty cycle 6.13%. The effect of the plasma on the PVA thin film was investigated by analyzing the contact angle, scanning electron microscopy, atomic force microscopy, X-ray photoelectron spectroscopy, and UV-visible spectroscopy. After the plasma treatment, the contact angle was found to be decrease from 29.6 ± 0.4° to 14.5 ± 0.2°, which implied that the surface property had changed to a hydrophilic state caused by an increase in the surface roughness and introduction of oxygen, including a polar carbonyl group. It was found that the plasma-treated hydrophilic PVA thin film exhibited excellent antifogging and highly transparent characteristics, making it an appropriate material for food packaging and green houses.

Original languageEnglish
Article number075008
JournalAIP Advances
Volume9
Issue number7
DOIs
Publication statusPublished - 2019 Jul 1

Bibliographical note

Funding Information:
This work was supported by a grant (NRF-2016K1A4A3914113) from the National Research Foundation of Korea (NRF) and in part by Kwangwoon University 2019, Korea.

Publisher Copyright:
© 2019 Author(s).

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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