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Surface behavior of dilute blends of poly(vinyl chloride) with siloxane–urethane–ethyleneoxide oligomers

✍ Scribed by M. M. Gorelova; A. J. Pertsin; I. O. Volkov; L. V. Filimonova; L. I. Makarova; A. A. Zhdanov

Publisher
John Wiley and Sons
Year
1995
Tongue
English
Weight
491 KB
Volume
57
Category
Article
ISSN
0021-8995

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✦ Synopsis

SYNOPSIS

X-ray photoelectron spectroscopy is used to study the surface segregation of siloxane in blends of poly(viny1 chloride) with siloxane-urethane-ethyleneoxide oligomers. At high concentrations of the oligomeric additive, the surface segregation of siloxane in the blends strongly depends on the molecuIar architecture of the additive: the segregation is much higher when the siloxane blocks are at the ends of the oligomeric chains. At low additive concentrations, the surface segregation of siloxane is governed solely by the siloxane concentration in the bulk.

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