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Effect of polymer‐plasticizer interactions on the oxygen permeability of starch‐sorbitol‐water films
Author(s) -
Gaudin S.,
Lourdin D.,
Le Botlan D.,
Ilari J. L.,
Forssell P.,
Colonna P.
Publication year - 1999
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.19991380132
Subject(s) - sorbitol , plasticizer , oxygen permeability , starch , oxygen , polymer , chemistry , permeability (electromagnetism) , polymer chemistry , materials science , chemical engineering , organic chemistry , biochemistry , membrane , engineering
This study evaluated the oxygen permeability (O.P.) of starch‐sorbitol‐water films produced by casting. With a sorbitol content <20%, O.P. (0.15 10 −16 cm 2 /s.Pa for 8.8% sorbitol) was lower than for other polymers classically used as oxygen barriers. With a sorbitol content >20%, O.P. (1.6 10 −16 cm 2 /s.Pa for 24.9% sorbitol) was higher than for starch films without a plasticizer. These results were correlated with molecular mobility as determined by time‐domain NMR. Low and high O.P. corresponded respectively to a decrease and an increase of molecular mobility relative to sorbitol content.
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