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

Authors
 Ramhari Paneru  ;  Pradeep Lamichhane  ;  Bishwa Chandra Adhikari  ;  Se Hoon Ki  ;  Jinsung Choi  ;  Jae Sung Kwon  ;  Eun Ha Choi 
Citation
 AIP Advances, Vol.9(7) : 075001, 2019 
Journal Title
 AIP Advances 
Issue Date
2019
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.
Files in This Item:
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DOI
10.1063/1.5100776
Appears in Collections:
2. College of Dentistry (치과대학) > Dept. of Dental Biomaterials and Bioengineering (치과생체재료공학교실) > 1. Journal Papers
Yonsei Authors
Kwon, Jae-Sung(권재성) ORCID logo https://orcid.org/0000-0001-9803-7730
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/171244
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