Literature DB >> 16583151

Main-chain smectic liquid-crystalline polymers as randomly disordered systems.

A S Muresan1, B I Ostrovskii, A Sánchez-Ferrer, H Finkelmann, W H de Jeu.   

Abstract

We report a high-resolution X-ray lineshape study of main-chain smectic polymers. The results indicate that the layer ordering differs fundamentally from the algebraic decay typical for other smectic liquid-crystalline systems. The lineshapes are best described by broad squared Lorentzians indicating some form of short-range correlations. However, several higher harmonics are observed, which excludes simple liquid-like short-range order. This behaviour is tentatively attributed to a random field of defects associated with entangled hairpins in the main-chain polymer structure.

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Year:  2006        PMID： 16583151     DOI： 10.1140/epje/i2005-10077-7

Source DB:  PubMed          Journal:  Eur Phys J E Soft Matter        ISSN： 1292-8941            Impact factor:   1.890


  6 in total

1.  Universality and scaling in the disordering of a smectic liquid crystal.

Authors:  T Bellini; L Radzihovsky; J Toner; N A Clark
Journal:  Science       Date:  2001-11-02       Impact factor: 47.728

2.  Disorder by random crosslinking in smectic elastomers.

Authors:  Denitza M Lambreva; Boris I Ostrovskii; Heino Finkelmann; Wim H de Jeu
Journal:  Phys Rev Lett       Date:  2004-10-26       Impact factor: 9.161

3.  Mean-field nematic-smectic-A transition in a random polymer network.

Authors: 
Journal:  Phys Rev E Stat Phys Plasmas Fluids Relat Interdiscip Topics       Date:  1996-03

4.  X-ray scattering in smectic liquid crystals: From ideal- to real-structure effects.

Authors: 
Journal:  Phys Rev A       Date:  1991-12-15       Impact factor: 3.140

5.  Algebraic dependence of the structure factor and possible anharmonicity in a high-resolution x-ray study of a side-group polymeric liquid crystal.

Authors: 
Journal:  Phys Rev A       Date:  1991-03-15       Impact factor: 3.140

6.  Low-voltage-driven electromechanical effects of swollen liquid-crystal elastomers.

Authors:  Yusril Yusuf; Jong-Hoon Huh; P E Cladis; Helmut R Brand; Heino Finkelmann; Shoichi Kai
Journal:  Phys Rev E Stat Nonlin Soft Matter Phys       Date:  2005-06-09
  6 in total
  1 in total

1.  Order and strain in main-chain smectic liquid-crystalline polymers and elastomers.

Authors:  W H de Jeu; E P Obraztsov; B I Ostrovskii; W Ren; P J McMullan; A C Griffin; A Sánchez-Ferrer; H Finkelmann
Journal:  Eur Phys J E Soft Matter       Date:  2008-01-21       Impact factor: 1.890
  1 in total

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