Preparation of plastic and biopolymer multilayer films by plasma source ion implantation

Gye Hwa Shin, Yeon Hee Lee, Jin Sil Lee, Young Soo Kim, Won Seok Choi, Hyun Jin Park

Research output: Contribution to journalArticle

39 Citations (Scopus)

Abstract

The plasma source ion implantation (PSII) technique was used to improve the adhesion between linear low-density polyethylene (LLDPE) and biopolymer. LLDPE was treated with the PSII using O2 or CF4 gas to modify its surface. After modification, chitosan or corn zein was used for coating on LLDPE. Wettability of the LLDPE surface was evaluated with a contact angle meter by the sessile drop method. X-ray photoelectron spectroscopy (XPS) was used to analyze the LLDPE surface. Before and after treatment, in the case of LLDPE treated with O2 PSII, oxygen-containing functional groups were formed on the implanted surface. In the CF4 PSII treated LLDPE, it was observed that the fluorine concentration on the surface of LLDPE remarkably increased and hydrophobic groups were formed by chemical reaction. Bilayer films coated with chitosan or corn zein showed 10 times lower oxygen permeability. Tensile strength of multilayer films was decreased a little compared with that of LLDPE. The plastic and biopolymer multilayer films have potential for food packaging application because of their O2 gas barrier property and easy recyclability of the multilayer film.

Original languageEnglish
Pages (from-to)4608-4614
Number of pages7
JournalJournal of agricultural and food chemistry
Volume50
Issue number16
DOIs
Publication statusPublished - 2002 Jul 31

Keywords

  • Chitosan
  • Corn zein
  • Multilayer film
  • Oxygen permeability
  • Plasma source ion implantation

ASJC Scopus subject areas

  • Chemistry(all)
  • Agricultural and Biological Sciences(all)

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