Premium
Mechanism of migration from agglomerated cork stoppers: I. An electron spin resonance investigation
Author(s) -
Six Thérèse,
Feigenbaum Alexandre,
Riquet AnneMarie
Publication year - 2002
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.10230
Subject(s) - cork , adhesive , electron paramagnetic resonance , swelling , covalent bond , materials science , composite material , penetration (warfare) , polymer chemistry , chemical engineering , chemistry , polymer science , organic chemistry , nuclear magnetic resonance , physics , layer (electronics) , operations research , engineering
Related to the study of interactions between food and packaging, migration from agglomerated cork stoppers was studied by electron spin resonance. Paramagnetic probes were incorporated separately in the adhesive or in the cork granules. The finished cork was obtained by an individual molding procedure. The behavior of aminoxyl probes, differing by their functional groups, was studied. Free probes, initially incorporated into the adhesive phase, partitioned into cork during processing. Their migration occurred from both the cork and the adhesive phases. With amino‐TEMPO, a probe covalently bonded to the adhesive phase, it was possible to study the penetration of the alcoholic simulant of wine (12% ethanol) into the whole structure of the cork and to demonstrate that strong swelling took place. © 2002 Wiley Periodicals, Inc. J Appl Polym Sci 83: 2644–2654, 2002