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  Onset and end of transitions in PDMS/5CB blends as revealed by static light scattering

Gogibus, N., Maschke, U., Ewen, B., Coqueret, X., & Benmouna, M. (2002). Onset and end of transitions in PDMS/5CB blends as revealed by static light scattering. Molecular Crystals and Liquid Crystals, 375, 225-232.

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 Creators:
Gogibus, N.1, Author           
Maschke, U.1, Author           
Ewen, Bernd1, Author           
Coqueret, X., Author
Benmouna, M.1, Author           
Affiliations:
1MPI for Polymer Research, Max Planck Society, ou_1309545              

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Free keywords: light scattering; poly(dimethylsiloxane); nematic liquid crystal
 Abstract: The phase diagram of poly(siloxanes) and low molecular weight liquid crystals as obtained by polarized optical microscopy have shown a peculiar behavior : Transitions from a nematic to an isotropic and from an isotropic miscibility gap to a single isotropic phase take place in two steps interpreted as onset and end of transitions. This behavior has been observed in various systems and particular in those involving poly(dimethylsiloxane) (PDMS) and 4-cyano-4'-n-pentyl-biphenyl (5CB). In order to confirm this behavior we performed static light scattering on blends of PDMS (M-w=45000g/mol) and 5CB at different compositions. These experiments covered a temperature range from 20 to 115degreesC and several scattering angles.

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Language(s): eng - English
 Dates: 2002
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: No review
 Identifiers: eDoc: 28482
ISI: 000175887200022
 Degree: -

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Title: Molecular Crystals and Liquid Crystals
  Alternative Title : Mol. Cryst. Liquid Cryst.
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: -
Pages: - Volume / Issue: 375 Sequence Number: - Start / End Page: 225 - 232 Identifier: ISSN: 1058-725X