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Effects of ozone exposure on the structural, mechanical and barrier properties of select plastic packaging films
Author(s) -
Ozen Banu F.,
Mauer Lisa J.,
Floros John D.
Publication year - 2002
Publication title -
packaging technology and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.365
H-Index - 50
eISSN - 1099-1522
pISSN - 0894-3214
DOI - 10.1002/pts.602
Subject(s) - polyamide , polyethylene , materials science , oxygen permeability , ultimate tensile strength , ozone , composite material , polymer chemistry , polymer , chemical engineering , degradation (telecommunications) , oxygen , chemistry , organic chemistry , engineering , telecommunications , computer science
The effects of ozone (O 3 ) gas exposure at various concentrations and treatment times on structural, mechanical and barrier properties of polyethylene and polyamide films were investigated. Changes in the structure of the films were monitored using an FT‐IR spectrometer. The results showed that O 3 treatment affected polyethylene and polyamide films differently. While O 3 treatment caused formation of oxygen‐containing functional groups and degradation of polymeric chains in polyethylene films, O 3 treatment of polyamide films significantly increased the –C–N– stretch observed at 1125 cm −1 in the FT‐IR spectra. The changes in the mechanical properties of polyethylene films depended on the O 3 treatment conditions (temperature and O 3 concentration were the most significant), but an increase in tensile strength of polyamide films was observed regardless of the treatment conditions. Permeability to O 2 for both types of films decreased with increasing O 3 treatment time. Copyright © 2003 John Wiley & Sons, Ltd.