Journal
JOURNAL OF APPLIED POLYMER SCIENCE
Volume 102, Issue 3, Pages 2904-2914Publisher
WILEY
DOI: 10.1002/app.24795
Keywords
carbonated soybean oil; epoxy resin; modified epoxy resin; phase separation; thermoset morphology
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Carbonated soybean oil (CSO) containing five-membered cyclic carbonate groups has been obtained in the reaction of epoxidized soybean oil with carbon dioxide in the presence of KI activated by 18-crown-6 under 6 MPa CO2 pressure at 130 degrees C. The CSO was used for modification of bisphenol-A based epoxy resin. The composition epoxidecyclic carbonate was cured using polyamine hardeners by one-step and two-step procedures. All cured compositions were characterized for their thermal and mechanical proper-ties and compared with the parent epoxy network. The optimal properties were obtained for compositions containing CSO and cured by one-step method when phase separation takes place. The mechanical properties were discussed in terms of morphology observed by SEM. (c) 2006 Wiley Periodicals, Inc.
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