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United States Department of Agriculture

Agricultural Research Service

Research Project: Viscoelastic Properties and Polymer Composite Applications of Nano-Materials Derived from Agricultural Byproducts and Feedstocks

Location: Plant Polymer Research

Title: Interface interactions of natural rubber and protein/fiber aggregates

item Jong, Lei

Submitted to: Meeting Abstract
Publication Type: Abstract Only
Publication Acceptance Date: May 7, 2014
Publication Date: August 10, 2014
Citation: Jong, L. 2014. Interface interactions of natural rubber and protein/fiber aggregates. Meeting Abstract.

Technical Abstract: Mechanical properties of natural rubber are improved with a renewable filler for rubber applications. Aggregates of protein and fiber that constitute soy protein concentrate were shear-reduced and used to enhance the tensile modulus of the natural rubber. The aqueous dispersion of the shear-reduced aggregates has a higher viscosity and shear storage modulus. The reduced aggregates in the natural rubber increased the tensile modulus of the natural rubber significantly. Compared to the natural rubber, the tensile modulus of 30% filled rubber increased tenfold at 200% elongation. The frequency dependent shear modulus, sweling experiments, and dynamic strain sweep experiments were used to analyze polymer-filler interactions. The result shows that the polymer- filler interaction is small and is not the dominant factor that enhances the tensile properties of the natural rubber. Instead, the filler-filler network is the cause for the mechanical enhancement of the natural rubber.

Last Modified: 10/31/2014
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