Journal
PACKAGING TECHNOLOGY AND SCIENCE
Volume 21, Issue 4, Pages 185-191Publisher
WILEY
DOI: 10.1002/pts.786
Keywords
active wall; scavenger; gas permeation; steady and unsteady
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Steady- and unsteady-state gas permeation rates through packaging walls containing active (scavenger) materials are determined as functions of the system's physical parameters and the scavenger load. With the simplifying assumptions of constant scavenger concentration and first-order reaction kinetics, steady-state analysis shows that there is a minimum quantity of scavenger that must be added to the packaging wall if any reduction of gas permeation is to be achieved. Unsteady-state studies have established the dependence of the time needed to reach stationary behaviour on the system's physical parameters. Copyright (C) 2007 John Wiley & Sons, Ltd.
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