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Sol-Gel Transition of Polyacrylonitrile/Propylene Carbonate Solution

Cited 8 time in Web of Science Cited 9 time in Scopus
Authors
Ko, Moon Bae; Kwon, Ick Hwan; Jo, Won Ho; Son, Tae Won
Issue Date
1994-04-15
Publisher
John Wiley & Sons
Citation
J. Polym. Sci. Pt. B-Polym. Phys. 1994, 32, 945
Keywords
sol-gel transitionpolyacrylonitrile/propylene carbonateliquid-liquid phase separationthermomechanical analysis
Abstract
The thermoreversible gelation of polyacrylonitrile (PAN)/propylene carbonate (PC) solution was investigated by calorimetric, thermomechanical, optical, and rheological measurements. Two endothermic signals are observed for PAN/PC gels in DSC thermograms, and the peak temperature of the higher melting endotherm coincides with the gel melting temperature determined from the TMA thermogram. SEM micrographs show that the overall structure is separated into two phases and is composed of sperical domains, which may be formed upon passing through the thermodynamically unstable or metastable state via the liquid-liquid phase separation. The gelation rate increases with the aging temperature. This is also discussed on the basis of the elasticity theory of the fishnet gel. © 1994 John Wiley & Sons, Inc.
ISSN
0887-6266 (print)
1099-0488 (online)
Language
English
URI
http://hdl.handle.net/10371/8360
DOI
https://doi.org/10.1002/polb.1994.090320517
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College of Engineering/Engineering Practice School (공과대학/대학원)Dept. of Material Science and Engineering (재료공학부) Journal Papers (저널논문_재료공학부)
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