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Small-angle Neutron Scattering of Polymer Blends of Polyvinylmethylether at Dilute Concentration in Deuterated Polystyrene by Sangwook Choi; Xiaodu Liu; Robert M. Briber is a Materials Science article available to read on EtoBox.

What is Small-angle Neutron Scattering of Polymer Blends of Polyvinylmethylether at Dilute Concentration in Deuterated Polystyrene about?

Small-angle neutron scattering was used to measure the radius of gyration and thermodynamics of blends of poly(vinylmethylether) (PVME) at dilute concentration in deuterated polystyrene (PSD). The data were analyzed using the Zimm equation and the random phase approximation theory. For PVME with a weight-average molecular weight of 38,400 the value of the radius of gyration, R g , was found to be 47 A ̊in the limit of the concentration of PVME extrapolated to zero. Analysis of the temperature dependence of the Flory interaction parameter, x/v 0 , indicates that phase separation should occur at approximately 300ЊC for a sample with f PVME à 9%. No significant temperature dependence of R g was found over the experimental range studied.

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Author

Sangwook Choi; Xiaodu Liu; Robert M. Briber

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Wiley (ISSN 0887-6266)

Published

1998

Language

EN

Field

Materials Science (Physical Sciences)