Dynamic Mechanical Characterization of Soy Based Epoxy Resin System


Two novel soy based resin systems namely Epoxidized Allyl Soyate (EAS) and Epoxidized Methyl Soyate (EMS) have been synthesized at the University of Missouri-Rolla. These resins form co-polymers with base epoxy in varied proportions to obtain a family of polymeric networks. The effects of the stoichiometry on the dynamic mechanical properties of the resulting resins were investigated. The results show that the damping ability is enhanced through the introduction of EAS and EMS into the base Epon resin. The good damping in the soy resins is attributed to the presence of long flexible polymer chains in the backbone. The glass transition temperature decreased and the intensity of the loss tangent increased with the addition of soy resins. EMS possessed the highest loss tangent peak and the lowest glass transition temperature among the other co-polymers. The increase in frequency of the loading displaced the loss tangent response to higher temperatures for all the concentrations. Therefore, soy resins are capable of damping the sound and vibration over a wide range of temperatures and frequencies.

Meeting Name

International SAMPE Technical Conference (2004: May 16-20, Long Beach, CA)


Mechanical and Aerospace Engineering

Second Department


Keywords and Phrases

Dynamic Mechanical Analysis; Soy Resins; Damping

Document Type

Article - Conference proceedings

Document Version


File Type





© 2004 Society for the Advancement of Material and Process Engineering, All rights reserved.

Publication Date

01 May 2004

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