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Controlled release of perfumes from polymers. II. Incorporation and release of essential oils from glassy polymers
Author(s) -
Peppas Nikolaos A.,
Am Ende David J.
Publication year - 1997
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/(sici)1097-4628(19971017)66:3<509::aid-app11>3.0.co;2-q
Subject(s) - copolymer , polymer , methacrylate , carvone , ethylene glycol dimethacrylate , materials science , swelling , solubility , controlled release , eugenol , polymer chemistry , chemical engineering , chemistry , limonene , essential oil , organic chemistry , chromatography , composite material , methacrylic acid , nanotechnology , engineering
Release of essential oils from glassy hydrophilic copolymers of 2‐hydroxyethyl methacrylate (HEMA) and ethylene glycol dimethacrylate (EGDMA) was studied in a range of releasing media at 30°C. The release of carvone, limonene, and eugenol was investigated using swelling‐controlled release systems based on these copolymers. By changing the crosslinking ratio of the copolymers it was possible to achieve zero‐order release. The amount of essential oil release was correlated to the thermodynamic compatibility of the oil‐polymer pair, as judged by the solubility parameter difference. © 1997 John Wiley & Sons, Inc. J Appl Polym Sci 66: 509–513, 1997