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Sorption of Volatile Compounds in Aqueous Solution by Ethylene‐Vinyl Alcohol Copolymer Films
Author(s) -
IKEGAMI TOHRU,
NAGASHIMA KAZUFUMI,
SHIMODA MITSUYA,
TANAKA YOSHINARI,
OSAJIMA YUTAKA
Publication year - 1991
Publication title -
journal of food science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.772
H-Index - 150
eISSN - 1750-3841
pISSN - 0022-1147
DOI - 10.1111/j.1365-2621.1991.tb05313.x
Subject(s) - sorption , vinyl alcohol , copolymer , aqueous solution , ethylene , polyethylene , alcohol , solubility , high density polyethylene , adsorption , organic chemistry , chemistry , materials science , polymer chemistry , chemical engineering , polymer , catalysis , engineering
Sorption of volatile compounds by ethylene‐vinyl alcohol copolymer (EVOH) films from an aqueous solution was investigated to evaluate the merit of their use for food packaging. With regard to EVOH, equilibrium swelling values gave rise to a bimodal solubility parameter distribution with maxima at δ values of 8.5 assigned to ethylene units and 14.5 to vinyl alcohol units. Comparing distribution ratios of EVOH with those of middle‐density polyethylene (MDPE), the ratios were 1:100 for terpene hydrocarbons, 1:10 for esters, 1:2 for alcohols, and almost 1:1 for aldehydes. By biaxial orientation of EVOH film, the sorption could be depressed below 60%. These results suggested EVOH films are more appropriate than MDPE for food container lining.