期刊
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
卷 2, 期 9, 页码 2111-2116出版社
AMER CHEMICAL SOC
DOI: 10.1021/sc500176z
关键词
Epoxy resin; Epoxidized soybean oil; Differential scanning calorimetry; Reaction kinetics; Activation energy; Thermoset polymers; Biobased materials
资金
- Natural Sciences and Engineering Research Council of Canada (NSERC)
- Grain Farmers of Ontario (GFO), Canada
- Ontario Ministry of Agriculture Food
- Ontario Ministry of Rural Affairs (OMAF-MRA)/University of Guelph-Bioeconomy for Industrial Uses Research theme
- OMAF-MRA New Directions Research Program
- Ontario Ministry of Economic Development and Innovation (MEDI) Ontario Research Fund, Research Excellence, Round-4 [ORF RE04]
The goal of this research was to study the kinetics of the reaction of diglycidyl ether of bisphenol A (DGEBA)-based epoxy resin cured with sebacic acid as a biobased hardener in the presence of three different loadings of epoxidized soybean oil (ESO) (i.e., 10, 20, 30 wt %). Nonisothermal differential scanning calorimetric (DSC) and model-free isoconversional method was used to analyze the curing kinetic data and determine the activation energy of the reactions. It was found that the biobased hardener increased the enthalpy of reaction as well as the activation energy of reaction in comparison to the amine hardeners that are currently used for epoxy curing. The addition of epoxidized soybean oil increased the enthalpy of reaction, maximum exothermic temperature, and activation energy of the system. Kissinger Akahira Sunose (KAS) and Starink methods were used to determine the activation energy of the studied systems. It was also found that the curing reaction of epoxy with 30 wt % of ESO is diffusion controlled in comparison with other counterparts.
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