CONFORMATION ANALYSIS OF FREEZE-DRIED ISOTACTIC POLYSTYRENE FROM DILUTE-SOLUTIONS

Authors
GU FM BAO LR CHEN M BU HS
Citation
Fm. Gu et al., CONFORMATION ANALYSIS OF FREEZE-DRIED ISOTACTIC POLYSTYRENE FROM DILUTE-SOLUTIONS, Macromolecular rapid communications, 19(7), 1998, pp. 367-369
Citations number
13
Categorie Soggetti
Polymer Sciences
Journal title
Macromolecular rapid communications → ACNP
ISSN journal
10221336
Volume
19
Issue
7
Year of publication
1998
Pages
367 - 369
Database
ISI
SICI code
1022-1336(1998)19:7<367:CAOFIP>2.0.ZU;2-J
Abstract
Fourier transform infrared spectra of freeze-dried samples of isotacti c polystyrene (i-PS) from dilute solutions were analyzed. The 698, 145 2, 1493 and 1601 cm(-1) bands increased in sharpness and intensity as the solution concentration decreased, indicating that the freeze-dried sample is in a more dilated state. When the freeze-dried i-PS was ann ealed at 100 degrees C, all aforementioned bands broadened and their h eights depressed, accompanied with a significant change of the bands a t 981 and 906 cm(-1).