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  • Title: Plasticized-starch/poly(ethylene oxide) blends prepared by extrusion.
    Author: Yu F, Prashantha K, Soulestin J, Lacrampe MF, Krawczak P.
    Journal: Carbohydr Polym; 2013 Jan 02; 91(1):253-61. PubMed ID: 23044130.
    Abstract:
    Blends based on plasticized-wheat starch (as matrix or rich phase) and poly(ethylene oxide) (PEO) (as dispersed phase) were prepared by melt processing in a twin-screw extruder. The extrusion of the plasticized-starch is significantly facilitated by blending with PEO. Plasticized-starch and PEO are immiscible in the range of the investigated blend ratios (90/10-50/50). The phase inversion takes place when the PEO content is 50 wt.% in the blend. Both the thermal stability and the tensile properties of plasticized-starch are improved by blending with PEO. Also, a synergistic effect between plasticized-starch and PEO is noticed at 25-40 wt.% PEO content in the blend, the Young's modulus of the materials obtained being the highest and higher than both neat polymer components at those blending ratios.
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