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Two Gel States of a PEO-PPO-PEO Triblock Copolymer Formed by Different Mechanisms

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Authors
Park, Moon Jeong; Char, Kookheon
Issue Date
2002-08-02
Publisher
John Wiley & Sons
Citation
Macromol. Rapid Commun. 2002, 23, 688-692
Keywords
gelsPluronic P103rheologyturbidity
Abstract
Two gel states of a PEO-PPO-PEO (Pluronic P103) triblock copolymer in water are investigated using small-angle X-ray scattering, rheology and differential scanning calorimetry. The first gel state turns out to be the hexagonal microphase while the second gel state, showing turbidity change with four distinct regions, is somewhat disrupted. The second gel is moreover not thermoreversible as evidenced by rheology. Based upon the present study, two different gelation mechanisms for aqueous PEO-PPO-PEO solutions are proposed.
ISSN
1022-1336 (print)
1521-3927 (online)
Language
English
URI
http://hdl.handle.net/10371/5846
DOI
https://doi.org/10.1002/1521-3927(20020801)23:12<688::AID-MARC688>3.0.CO;2-R
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College of Engineering/Engineering Practice School (공과대학/대학원)Dept. of Chemical and Biological Engineering (화학생물공학부)Journal Papers (저널논문_화학생물공학부)
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