Structure Formation and Dynamic Properties in Physical Gels of Thermoplastic Elastomer and Oil

We report new non-aqueous physical gels prepared with a small amount of thermoplastic elastomers and a large amount of oils of low molecular weight. The gels have three dimensionally continuous polymer networks, whose unit structure, a spherical cell of a few tens micrometers is mutually connected w...

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Bibliographic Details
Published inKOBUNSHI RONBUNSHU Vol. 55; no. 12; pp. 768 - 779
Main Authors FUKAHORI, Yoshihide, MASHITA, Naruhiko, WAKANA, Yuichiro
Format Journal Article
LanguageJapanese
Published Tokyo The Society of Polymer Science, Japan 01.01.1998
Tsukiji daisan nagaoka
Subjects
Networks
Nucleation and Growth
Physical Gel
Spinodal Decomposition
Thermoplastic Elastomer
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Summary:We report new non-aqueous physical gels prepared with a small amount of thermoplastic elastomers and a large amount of oils of low molecular weight. The gels have three dimensionally continuous polymer networks, whose unit structure, a spherical cell of a few tens micrometers is mutually connected with holes of a few micrometers. Oil rich phase is enclosed inside the spherical cell but three-dimensionally connected each other through the holes, i. e., the tunnels. The structure formation initiates as a spinodal decomposition but the mechanism changes into the nucleation and growth in propagation. Droplets of the oil rich phase are dischanged from homogeneous polymer-monomer mixtures and coarsen being surrounded by thin spherical outer cells of the polymer-rich phase. The physical gels are quite stable thermally and dynamically and give the feel of gelatin, flesh, and others.
ISSN:0386-2186
1881-5685
DOI:10.1295/koron.55.768