Premium
Surface segregation of components in poly(vinyl chloride)–polydimethylsiloxane and polystyrene–poly(propylene oxide) solvent‐cast blends
Author(s) -
Volkov I. O.,
Gorelova M. M.,
Pertsin A. J.,
Filimonova L. V.,
Torres M. A. P. R.,
Oliveira C. M. F.
Publication year - 1998
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/(sici)1097-4628(19980425)68:4<517::aid-app1>3.0.co;2-p
Subject(s) - polydimethylsiloxane , polystyrene , materials science , propylene oxide , polymer chemistry , tetrahydrofuran , vinyl chloride , solvent , chemical engineering , polymer blend , elastomer , oxide , scanning electron microscope , composite material , ethylene oxide , copolymer , polymer , chemistry , organic chemistry , engineering , metallurgy
X‐ray photoelectron spectroscopy and scanning electron microscopy are used to study the surface composition and morphology of poly(vinyl chloride)–polydimethylsiloxane (PVC–PDMS) and polystyrene–poly(propylene oxide) (PS–PPO) solvent‐cast blends as a function of the blend composition and constituent molecular weights. The PVC–PDMS blends show a pronounced surface enrichment of PDMS, which is higher the lower the molecular weight of PDMS. The surface behavior ofthe PPO–PS blends is strongly dependent on the solvent used. Despite the much lower surface tension of PPO compared to that of PS, no surface segregation of PPO isobserved in the PPO–PS blends cast from tetrahydrofuran, while the blends cast from chloroform exhibit a high surface enrichment of PPO. © 1998 John Wiley & Sons, Inc. J Appl Polym Sci 68: 517–522, 1998