ISSN:
1750-3841
Quelle:
Blackwell Publishing Journal Backfiles 1879-2005
Thema:
Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
,
Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
Notizen:
: A new approach based on the use of the oscillatory sorption tests is proposed for determining the water-transport properties of chitosan-based edible films. Stepwise sorption tests, oscillatory sorption tests, and water-permeation tests were conducted at 25 °C on chitosan edible films to elucidate the advantage of using the proposed approach. A mathematical model, which accounts for the superposition of polymer relaxation and stochastic diffusion, was used to fit and to predict the experimental data. Results suggest that wherever water-sorption kinetic is controlled by polymer relaxation, oscillatory sorption tests should be used instead of stepwise sorption tests to determine the relationship between water-diffusion coefficient and the local water concentration.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1111/j.1365-2621.2004.tb17866.x
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