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Liquid Crystal Influenced Self-assembly in Mesogenic Polymer and Liquid Crystal Blends

Published online by Cambridge University Press:  01 February 2011

Lanfang Li ,
Carmen Otilia Catanescu  and
Liang-Chy Chien
Lanfang Li
Affiliation:
Chemical Physics Interdisciplinary Program, Kent State University, Kent, Ohio
Carmen Otilia Catanescu
Affiliation:
Chemical Physics Interdisciplinary Program, Kent State University, Kent, Ohio
Liang-Chy Chien
Affiliation:
Chemical Physics Interdisciplinary Program, Kent State University, Kent, Ohio
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Abstract

In this work, we found that by performing photo-polymerization of the mesogenic monomer RM257 in liquid crystals, well organized polymer walls were formed through out the cell by self-assembly of the polymer within the anisotropic host – the liquid crystal. The polymerization conditions, which were parameterized as UV intensity, photo-reactivity (characterized by photo initiator concentration), curing temperature, monomer concentration and mesophase of the liquid crystal host, were systematically varied. Different liquid crystal host also raised some difference in polymer network. We believe this kind of morphology comes from spinodal decomposition and the anisotropic elastic property of the liquid crystal host. It is found that for RM257 and low molecular weight nematic liquid crystals a monomer concentration of 5% is sufficient to use liquid crystal hosts to work as templates for well structured polymer walls.

Keywords

phase separationpolymer liquid crystal compositemorphologyphoto-induced polymerization
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 856: Symposium BB – Multicomponent Polymer Systems-Phase Behavior, Dynamics, and Applications , 2004 , BB11.2
Copyright
Copyright © Materials Research Society 2005

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References

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