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2009•Journal of Henan University of TechnologyRequires access

INFLUENCE OF POLYHYDROBUTYRATE ON AGEING EFFECT OF SOY PROTEIN ISOLATE PLASTICS

Cheng Guo‐xiang

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Abstract

The mechanical stability of soy protein plastics is correlative to its water absorption.The water absorption resulted in great decrease in tensile strength and elastic modulus of the material along with the time delay,which directly influences the practical application.Therefore,biodegradable polyhydrobutyrate(PHB) was used to modify soy protein plastics by blending.Influence of PHB on ageing effect of soy protein plastics and the modification mechanism were investigated.The results showed that PHB can suppress the water absorption rate of soy protein,increase its mechanical stability and greatly decrease the ageing effect.It was suggested that the modification is correlative to the hydrophobicity of PHB and interactions between soy protein and PHB.

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What this paper is about

The mechanical stability of soy protein plastics is correlative to its water absorption.The water absorption resulted in great decrease in tensile strength and elastic modulus of the material along with the time delay,which directly influences the practical application.Therefore,biodegradable polyhydrobutyrate(PHB) was used to modify soy protein plastics by blending.Influence of PHB on ageing effect of soy protein plastics and the modification mechanism were investigated.The results showed that PHB can suppress the water absorption rate of soy protein,increase its mechanical stability and greatly decrease the ageing effect.It was suggested that the modification is correlative to the hydrophobicity of PHB and interactions between soy protein and PHB.

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Available abstract

The mechanical stability of soy protein plastics is correlative to its water absorption.The water absorption resulted in great decrease in tensile strength and elastic modulus of the material along with the time delay,which directly influences the practical application.Therefore,biodegradable polyhydrobutyrate(PHB) was used to modify soy protein plastics by blending.Influence of PHB on ageing effect of soy protein plastics and the modification mechanism were investigated.The results showed that PHB can suppress the water absorption rate of soy protein,increase its mechanical stability and greatly decrease the ageing effect.It was suggested that the modification is correlative to the hydrophobicity of PHB and interactions between soy protein and PHB.

Key concepts: Soy protein, Absorption of water, Ageing, Ultimate tensile strength, Materials science, Absorption (acoustics), Composite material, Food science

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