UNIQUE MORPHOLOGIES FOUND IN FREEZE-DRIED POLY(ETHYLENE OXIDE) PREPARED FROM DILUTE-SOLUTIONS

Authors
GU FM BU HS ZHANG Z
Citation
Fm. Gu et al., UNIQUE MORPHOLOGIES FOUND IN FREEZE-DRIED POLY(ETHYLENE OXIDE) PREPARED FROM DILUTE-SOLUTIONS, Macromolecular chemistry and physics, 199(11), 1998, pp. 2597-2600
Citations number
12
Categorie Soggetti
Polymer Sciences
Journal title
Macromolecular chemistry and physics → ACNP
ISSN journal
10221352
Volume
199
Issue
11
Year of publication
1998
Pages
2597 - 2600
Database
ISI
SICI code
1022-1352(1998)199:11<2597:UMFIFP>2.0.ZU;2-F
Abstract
Freeze-dried particles of poly(ethylene oxide) (PEO) were prepared fro m sublimation of a 1x10(-2)wt.-% solution of PEO in benzene in an ice- salt bath. After isothermal crystallization at 318.2 +/- 0.1 K for 2 h , an unusual planar zigzag form of PEO was found. A variety of unique spherulite-like morphologies were also observed, and their formation i s discussed on the basis of the interaction between solvent molecules and segment of the polymer chains.