Anisotropic phase separation of polymer blends induced by polarization-selective photoisomerization

Citation
K. Endoh et Q. Tran-cong, Anisotropic phase separation of polymer blends induced by polarization-selective photoisomerization, MACRO RAPID, 20(7), 1999, pp. 390-393
Citations number
14
Categorie Soggetti
Organic Chemistry/Polymer Science
Journal title
MACROMOLECULAR RAPID COMMUNICATIONS
ISSN journal
10221336 → ACNP
Volume
20
Issue
7
Year of publication
1999
Pages
390 - 393
Database
ISI
SICI code
1022-1336(199907)20:7<390:APSOPB>2.0.ZU;2-Y
Abstract
Anisotropic phase separation of polystyrene/poly(vinyl methyl ether) (PS/PV ME) blends was induced by photoisomerization of trans-stilbene moieties lab eled on the PS chains (abbreviated hereafter as PSS chains) using linearly polarized light. As temperature increases, the anisotropy becomes weaker an d eventually disappears at 10 degrees C above the glass transition of the P SS component. It was concluded that the elastic stress associated with the spatial distribution of the reaction is responsible for this morphological anisotropy.