Impact-strength improvement of epoxy resins reinforced with a biodegradable polymer

• Published in: Materials science & engineering. A, Structural materials : properties, microstructure and processing Vol. 478; no. 1; pp. 402 - 405
• Main Authors: Jin, Fan-Long, Park, Soo-Jin
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 15.04.2008; Elsevier
• Subjects: Adhesive strength; Applied sciences; Biopolymers; Blends; Composites; Exact sciences and technology; Forms of application and semi-finished materials; Impact strength; Polymer industry, paints, wood; Soybean oil; Technology of polymers; Blends; Adhesive strength; Soybean oil; Impact strength; Biopolymers; Elastic modulus; Biodegradability; Epoxy resin; Mechanical properties; Shear strength; Composite material; Intermolecular interaction; Bending strength
• ISSN: 0921-5093; 1873-4936
• DOI: 10.1016/j.msea.2007.05.053

Biobased epoxy materials were prepared from diglycidylether of bisphenol-A (DGEBA) and epoxidized soybean oil (ESO) with a thermally latent initiator. The effects of ESO content on the impact and adhesive strengths of the ESO-reinforced DGEBA epoxy system were investigated using several techniques and the mechanical properties of the DGEBA/ESO blends were studied by means of measurements of the flexural strength ( σ f) and elastic modulus ( E b). In the result, the Izod impact strength of the DGEBA/ESO blends was significantly improved with the addition of ESO, owing to high intermolecular interactions in the DGEBA/ESO blends. The adhesive lap shear strength was increased with increasing ESO content to 40 wt% ESO. The σ f and E b at low ESO contents showed similar values to those of the neat DGEBA.