Phase-segregated liquid crystalline cellulose derivative elastomers

Daniela Filip, Ivo Costa, J. L. Figueirinhas, M. H. Godinho

Research output: Contribution to journalConference articlepeer-review

Abstract

New free-standing elastomeric thin films of liquid crystalline cellulose derivative and with embedded nematic liquid crystal E7 were prepared by a shear casting technique. Film samples were prepared from anisotropic and isotropic precursor solutions and were analyzed by mechanical testing, polarizing optical microscopy and small angle light scattering. For the free-standing anisotropic thin films (10 +/- 2 mu m thick) prepared from lyotropic precursor solutions, the added low molecular weight LC proved to be a tuning factor for the mechanical anisotropy. The polymer chain alignment induced by mechanical stretching produces changes in the LC droplet orientation, in their shape anisotropy and in the E7 nematic director field inside them.
Original languageEnglish
Pages (from-to)66-70
JournalRevista Mexicana De Fisica
Volume52
Issue number5
Publication statusPublished - Nov 2006
Event7th Ibero-American Workshop on Complex Fluids and their Applications - Playa del Carmen, Mexico
Duration: 3 Oct 20056 Oct 2005

Keywords

  • cellulose derivative
  • elastomer
  • liquid crystal
  • band texture
  • interfacial

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