title: Plasticized-starch/poly(ethylene oxide) blends prepared by extrusion.
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.
authors.affiliation: Ecole des Mines de Douai, Polymers and Composites Technology & Mechanical Engineering Department, 941 rue Charles Bourseul, BP 10838, F 59508 Douai, France.
authors.forename: Fang
authors.initials: F
authors.lastname: Yu
authors.forename: Kalappa
authors.initials: K
authors.lastname: Prashantha
authors.forename: Jeremie
authors.initials: J
authors.lastname: Soulestin
authors.forename: Marie-France
authors.initials: MF
authors.lastname: Lacrampe
authors.forename: Patricia
authors.initials: P
authors.lastname: Krawczak
mesh_terms: D001672:Biocompatible Materials / Q000737:chemistry*; D004355:Drug Stability; D004548:Elasticity; D010969:Plastics / Q000737:chemistry*; D011092:Polyethylene Glycols / Q000737:chemistry*; D013213:Starch / Q000737:chemistry*; D013314:Stress, Mechanical; D013499:Surface Properties; D013696:Temperature; D013718:Tensile Strength; D014783:Viscosity
chemical_list: D001672:Biocompatible Materials; D010969:Plastics; D011092:Polyethylene Glycols; D013213:Starch