Biodegradable thermoplastic starch/poly (vinyl alcohol)

Katherine M. Dean, Euthathios Petinakis and Long Yu

in Nanocomposites with Biodegradable Polymers

Published in print April 2011 | ISBN: 9780199581924
Published online September 2011 | e-ISBN: 9780191728853 | DOI:

Series: Monographs on the Physics and Chemistry of Materials

Biodegradable thermoplastic starch/poly (vinyl alcohol)

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In this chapter, the formation, structures, and properties of a series of thermoplastic starch/ poly(vinylalcohol)(PVOH) nanocomposites with layered silicates are discussed. The relative concentrations of PVOH and layered silicate could be related to changes in intergallery spacing and formed a highly ordered intercalated structure. Dispersion of clay platelets was shown to be important in improving mechanical properties in these nanocomposites as was the interfacial interactions of filler and matrix (the more agglomerated composites containing both layered silicate and PVOH led to enhanced tensile strength and tensile modulus as compared to the more well dispersed composites without PVOH). Fourier transform infrared (FTIR) spectra of the thermoplastic starch and starch nanocomposites indicated a range of hydrogen bonding environments were produced between starch chains, PVOH and layered silicates during the extrusion processing stage. The evolution of distinct crystalline phases with ageing is also discussed.

Keywords: thermoplastic starch; crystalline phases; microstructure

Chapter.  5021 words.  Illustrated.

Subjects: Condensed Matter Physics

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