Preparation and Properties of Glycerol Plasticized Starch/ Sepiolites Composites

Abstract:

Two sepiolites (SEPs) were respectively used as the fillers in glycerol plasticized-cassava starch (GPS) matrix by the casting process. Scanning electron microscopy proved that SEPs were dispersed well in the GPS matrix. Fourier transform infrared spectroscopy indicated that silanol groups at the external surface of SEPs could form the interaction with C-O-H and C-O-C groups in starch molecules. The introduction of SEPs improved the tensile strength, thermal stability, the pasting viscosity and restrained water vapor permeability, but reduced the elongation at break of the composites. SEP-fiber imparted the composites better properties than SEP-velvet, except for the resistance of moisture adsorption. SEP-velvet could decrease the water contents at the equilibrium of the composites.

• Periodical: Advanced Materials Research (Volumes 634-638)
• Pages: 1955-1961
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.634-638.1955
• Online since: January 2013
• Authors: Yuan Yuan Du, Peng Wu Zheng
• Keywords: Composite, Plasticized Starch, Sepiolite

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DOI: 10.1007/s10973-008-9032-0

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