Journal
BIORESOURCE TECHNOLOGY
Volume 101, Issue 7, Pages 2520-2524Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2009.11.028
Keywords
Biobased epoxy; Rosin; Curing agent
Funding
- Washington State University, College of Agricultural, Human and Natural Resource Sciences, Agricultural Research Center
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Two rosin-based imide-diacids were synthesized and studied as epoxy curing agents. In comparison, a similar imide-diacid based on trimellitic anhydride was also prepared. The chemical structures were confirmed by H-1 NMR and FT-IR. The curing of a commercial epoxy with these imide-containing diacids was studied by differential scanning calorimetry (DSC). Thermal stability, tensile and dynamic mechanical properties of the cured epoxies were investigated. The results indicate that rosin-based imide-diacids used as curing agents resulted in significantly higher glass transition temperature, tensile and dynamic mechanical properties than the imide-diacid derived from trimellitic anhydride. Rosin acids have a great potential to replace some of current petroleum-based compounds in the synthesis of epoxy curing agents. (C) 2009 Elsevier Ltd. All rights reserved.
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