期刊
POLYMER INTERNATIONAL
卷 63, 期 2, 页码 273-279出版社
WILEY
DOI: 10.1002/pi.4501
关键词
epoxidized soybean oil; epoxy; mechanical properties; thermal properties; crosslink density
资金
- Exploratory Research Grant Scheme (ERGS, Ministry of Higher Education, MOHE, Malaysia [6730084]
- Universiti Sains Malaysia [8021013]
- USM Research University Postgraduate Research Grant Scheme [USM-RU-PRGS 8045001]
- National Science Foundation Fellowship (Ministry of Science, Technology and Innovation, MOSTI, Malaysia)
Epoxidized soybean oil (ESO)/diglycidyl ether of bisphenol A (DGEBA) in various blend ratios (i.e. 100/0, 90/10, 80/20, 70/30, 60/40, 50/50) was thermally cured using methylhexahydrophthalic anhydride in the presence of 2-ethyl-4-methylimidazole catalyst. The tensile properties and fracture toughness of the ESO/DGEBA thermoset blends were determined. Thermal properties of the blends were characterized using dynamic mechanical analysis, differential scanning calorimetry and thermogravimetric analysis. Blending of ESO and DGEBA gave synergistic effects on the modulus, strength, glass transition temperature and thermal stability. However, the fracture toughness and elongation at break of ESO/DGEBA blends are lower than those of ESO, as expected. The enhancement in certain mechanical and thermal properties of ESO/DGEBA can be associated with the crosslink density, gel content and possible interpenetrating network of the resulting thermoset blends. (c) 2013 Society of Chemical Industry
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