Hydrophobic Properties of Ethylene-Vinyl Alcohol Copolymer Treated with Plasma Source Ion Implantation

Kibeom Kim, Woonmo Sung, Hyun Jin Park, Yeonhee Lee, Seunghee Han, Wangjune Kim

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

The industrial use of ethylene-vinyl alcohol copolymer (EVOH) film is limited because it is easily degraded by moisture. The plasma source ion implantation (PSII) technique with CF4 or CH4 gas was used for the EVOH film to improve the surface hydrophobic properties. Variables examined in implantation were ion energy (0-10 keV), treatment time (5 s-5 min), and ion species. The hydrophobic properties of EVOH films were greatly enhanced after a CF4 PSII treatment, as evidenced by an increased contact angle from 66° to above 100° at -5 keV, and remained relatively unchanged during the period of 28 days. X-ray photoelectron spectroscopy, atomic force microscopy, and O2 permeability were used to characterize the surface properties of EVOH films treated with PSII. The improved hydrophobic properties were closely related to the formation of fluorine-containing functional groups such as CF, CF2, and CF3 on the modified surface. The percentage distribution of carbon functional groups supports the role of CF2 and CF3 groups in surface modification.

Original languageEnglish
Pages (from-to)2069-2075
Number of pages7
JournalJournal of Applied Polymer Science
Volume92
Issue number4
DOIs
Publication statusPublished - 2004 May 15

Fingerprint

Plasma sources
Ion implantation
Ethylene
Alcohols
Copolymers
Functional groups
Fluorine
Contact angle
Surface properties
Surface treatment
Atomic force microscopy
Moisture
Carbon
X ray photoelectron spectroscopy
Gases
Ions
ethylene-vinyl alcohol copolymer

Keywords

  • Ethylene-vinyl alcohol copolymer
  • Film surface modification
  • Hydrophobic
  • Oxygen permeability
  • Plasma source ion implantation

ASJC Scopus subject areas

  • Polymers and Plastics

Cite this

Hydrophobic Properties of Ethylene-Vinyl Alcohol Copolymer Treated with Plasma Source Ion Implantation. / Kim, Kibeom; Sung, Woonmo; Park, Hyun Jin; Lee, Yeonhee; Han, Seunghee; Kim, Wangjune.

In: Journal of Applied Polymer Science, Vol. 92, No. 4, 15.05.2004, p. 2069-2075.

Research output: Contribution to journalArticle

Kim, Kibeom ; Sung, Woonmo ; Park, Hyun Jin ; Lee, Yeonhee ; Han, Seunghee ; Kim, Wangjune. / Hydrophobic Properties of Ethylene-Vinyl Alcohol Copolymer Treated with Plasma Source Ion Implantation. In: Journal of Applied Polymer Science. 2004 ; Vol. 92, No. 4. pp. 2069-2075.
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