Structure of polymer networks dispersed in liquid crystals: Small angle neutron scattering study

A. Jákli, L. Bata, K. Fodor-Csorba, L. Rosta, L. Noirez

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Abstract

We present the first small angle neutron scattering studies on liquid crystal polymer composite systems, where small amounts of polymers are dispersed in liquid crystals. A recent study (A. Jákli, D. R. Kim, L. C. Chien and A. Saupe, 1992, Appl. Phys. 72, 3161) showed that even 1 wt% of polymer can induce phase separation in the form of fibres. We have found that the cross-sectional radius of such fibres is typically 300 A and they have rough surfaces. The spatial distribution of the fibres does not change during the phase transitions of the liquid crystal. We have found that there is a correlation between the size of the separated polymer particles and the roughness of their surfaces: larger objects have less smooth surfaces.

Original languageEnglish
Pages (from-to)227-234
Number of pages8
JournalLiquid Crystals
Volume17
Issue number2
DOIs
Publication statusPublished - Aug 1994

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ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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