ARS | Publication request: Effect of soy protein and carbohydrate ratio on the viscoelastic properties of styrene-butadiene composites

Submitted to: Meeting Abstract
Publication Type: Abstract Only
Publication Acceptance Date: January 31, 2008
Publication Date: March 15, 2008
Citation: Jong, L. 2008. Effect of soy protein and carbohydrate ratio on the viscoelastic properties of styrene-butadiene composites. Meeting Abstract. xx.

Technical Abstract: When soy products including soy protein isolate (SPI), defatted soy flour, soy protein concentrate, and soy spent flakes (SSF) were incorporated into rubber latex to form composites, they showed substantial reinforcement effects as measured by rheological and mechanical methods. It was observed that different reinforcement effects were obtained when these soy products have a different protein/carbohydrate ratio. In this study, soy protein and carbohydrate are mixed in different ratios as a co-filler and their effects on the viscoelastic properties of the composites are investigated. This study shows that the combination of soy protein and carbohydrate as co-fillers yields a composite modulus that can not be extrapolated from their single filler composites. The co-filler dominated by SPI produced a stronger composite and the co-filler dominated by SSF produced a weaker composite, when compared to SPI or SSF filled composites. The recovery and stress softening experiments also indicate a synergistic effect of the co-fillers.