Effect of functionality and content of epoxidized soybean oil on the physical properties of a modified diglycidyl ether of bisphenol A resin system

Abstract

Partially epoxidized soybean oil (pESO) and fully epoxidized soybean oil (fESO) were used respectively to modify a diglycidyl ether of bisphenol A (DGEBA) resin system in this study. The pESO was prepared by epoxidizing soybean oil and the fESO was purchased as it was commercially available. DGEBA/ESO ratio of the epoxy resin system was changed from 100/0 to 70/30 and triethylenetetramine was used as a curing agent. Impact strength of the bio‐epoxy resin system with fESO increased with ESO content, but the system with pESO decreased with ESO content. The bio‐epoxy resin system with pESO showed higher tensile strength and elongation at break than the system with fESO at ESO 30 wt%. Tensile modulus and thermal degradation temperature decreased with ESO content and glass transition temperature was highest at 20 wt% ESO regardless of epoxide functionality of ESO. The performance of the DGEBA/ESO bio‐epoxy resin system could be tailored by changing ESO content and functionality.

Opportunities and Emerging Challenges of the Heterogeneous Metal-Based Catalysts for Vegetable Oil Epoxidation

“…Thus, the environmental contamination caused by discharging waste cooking oil into water or soil can be avoided. Epoxidized vegetable oil (EVO) can be extensively utilized as a feedstock to synthesize polyols, glycols, and carbonyl compounds for the production of biolubricants, − biodiesel, − polyols for polyurethanes, − plasticizer, − resins, − cross-linked polymers, − pressure sensitive adhesives, , printing ink, and protective coatings. , The biobased lubricants produced from vegetable oil epoxidation are degradable with better lubricity, higher viscosity, and pour point as well as a lower viscosity index. , The biobased polyols have high average hydroxyl group functionality and thus ensure the production of rigid polyurethanes with high dimensional as well as good mechanical and thermal stability …”

Phase Equilibria, Diffusion and Structure in the Epoxypolycaprolactone System

“…Bisphenol A diglycidyl ether (DGEBA) diane epoxy resins are widely used thermosets [ 10 ]. Among the biodegradable modifiers for DGEBA are vegetable oils [ 11 , 12 , 13 ], rosin [ 14 , 15 ], lignin, [ 16 ] polylactic acid (PLA) [ 17 ], and in particular, thermoplastic biopolymers of synthetic origin, such as polycaprolactone (PCL).…”