2013•Journal of Functional BiomaterialsOpen access

Effect of composite plasticizer types on plasticization properties of corn starch

Yanhua Zhang

Abstract

Corn starch was plasticized by composite plasticizer mixed with glycerin,formamide and urea,and thermoplastic starch(TPS) was prepared by single screw extruder.The influence factor of starch plasticization properties was studied by composite plasticizer mixed with different ratio.DSC and SEM were used to charactized the plasticizing effect of TPS,and thermal stability,mechanical properties and water absorption of TPS were also studied.The results show that when composite plasticizer was mixed with glycerol-formamide-urea,the plasticizing effect of starch was best.The thermal stability and mechanical property of TPS were better and lower water absorption rate.

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Key concepts: Plasticizer, Materials science, Absorption of water, Starch, Thermoplastic, Composite number, Thermal stability, Formamide