Effect of Crosslink on Properties of Thermoplastics Dialdehyde Sweet Potato Starch

Abstract:

In this study, Dialdehyde sweet potato starch (DASS) with various carbonyl contents had been prepared by sodium periodate in the neutral condition and applied to improve the comprehensive properties of thermoplastic starch. Thermoplastic dialdehyde sweet potato starches (TPDASS) was prepared by thermal press when glycerol was added as a plasticizer. The thermal properties, moisture adsorption, mechanical and biodegradable properties of TPDASS were investigated. The results illustrated that at higher carbonyl content, the moisture adsorption and biodegradable ratio decreased with the increasing Tg of TPDASS, which may attribute to the partial cross-linking of DASS. The highlight properties of TPDASS95 were that: its tensile strength could reach 12.9 MPa even water content was 13.5%.

• Periodical: Advanced Materials Research (Volume 629)
• Pages: 391-395
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.629.391
• Online since: December 2012
• Authors: Shui Dong Zhang, Yu Rong Zhang, Yu Zhong Wang, Xiu Li Wang
• Keywords: Cross-Linking, Dialdehyde Sweet Potato Starch, Property, Thermoplastic

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