Abstract
Abstract : Ultradrawn filaments of poly (ethylene oxide) (PEO) have been prepared by a solid-state coextrusion in an Instron capillary rheometer. Two different molecular weights, 300,000 and 4,000,000 were evaluated. Properties have been examined as a function of uniaxial draw ratio. The drawn filaments of PEO exhibit extremes of melting point, percent crystallinity, birefringence, and tensile modulus. Features of a PEO filament with a draw ratio of 32 are a 72 deg C DSC melting point and a crystallinity of 94.0%, both measured at a scan 2.5 deg C/min. The corresponding birefringence is 0.035 and a Young's modulus of 3.5 GPa. (Author)
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