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Preparation of Macroporous Poly(divinylbenzene) Gels via Living Radical Polymerization

Published online by Cambridge University Press:  01 February 2011

Joji Hasegawa ,
Kazuyoshi Kanamori ,
Kazuki Nakanishi ,
Teiichi Hanada  and
Shigeru Yamago
Joji Hasegawa
Affiliation:
h_george@kuchem.kyoto-u.ac.jp, Kyoto University, Department of Chemistry, Kyoto, Japan
Kazuyoshi Kanamori
Affiliation:
kanamori@kuchem.kyoto-u.ac.jp, Kyoto University, Department of Chemistry, Kyoto, Japan
Kazuki Nakanishi
Affiliation:
kazuki@kuchem.kyoto-u.ac.jp, United States
Teiichi Hanada
Affiliation:
hanada@kuchem.kyoto-u.ac.jp, United States
Shigeru Yamago
Affiliation:
yamago@scl.kyoto-u.ac.jp, Kyoto University, Institute for Chemical Research, Uji, Japan
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Abstract

Macroporous cross-linked polymeric dried gels have been obtained by inducing phase separation in a homogeneous poly(divinylbenzene) (PDVB) network formed by organotellurium-mediated living radical polymerization (TERP). The living polymerization reaction of DVB with the coexistence of a non-reactive polymeric agent, poly(dimethylsiloxane) (PDMS), in solvent 1,3,5-trimethylbenzene (TMB) resulted in polymerization-induced phase separation (spinodal decomposition), and the transient structure of spinodal decomposition has been frozen by gelation. Well-defined macroporous monolithic dried gels with bicontinuous structure in the micrometer scale are obtained after removing PDMS and TMB by simple washing and drying. The properties of the macropores have been controlled by changing starting composition.

Keywords

macromolecular structurepolymerizationsol-gel
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1134: Symposium BB – Polymer-Based Smart Materials–Processes, Properties and Application , 2008 , 1134-BB05-36
Copyright
Copyright © Materials Research Society 2009

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References

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