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

被引：0
作者：
A. S. Muresan
B. I. Ostrovskii
A. Sánchez-Ferrer
H. Finkelmann
W. H. de Jeu
机构：
[1] FOM Institute for Atomic and Molecular Physics,Institute of Crystallography
[2] Academy of Sciences of Russia,Institut für Makromolekulare Chemie
[3] Universtät Freiburg,undefined
来源：
The European Physical Journal E | 2006年 / 19卷
关键词：
61.30.-v Liquid crystals; 64.60.Cn Order-disorder transformations; statistical mechanics of model systems; 61.10.Eq X-ray scattering (including small-angle scattering);
D O I：
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摘要：
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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页码：385 / 388
页数：3
相关论文
共 17 条
  • [1] Blatter R.J.(1994)undefined Rev. Mod. Phys. 66 1125-undefined
  • [2] Birgeneau J.(1998)undefined Magn. Mater. 177-181 1-undefined
  • [3] Magn R.E.(2001)undefined Science 294 1074-undefined
  • [4] Bellini undefined(2004)undefined Phys. Rev. Lett. 93 185702-undefined
  • [5] Lambreva undefined(2005)undefined Phys. Rev. E 71 061702-undefined
  • [6] Yusuf undefined(2001)undefined Adv. Mater. 13 1069-undefined
  • [7] Finkelmann undefined(2005)undefined Macromolecules 38 1357-undefined
  • [8] Schmidtke undefined(1937)undefined Phys. Z. Sowjetunion 11 545-undefined
  • [9] Landau undefined(1934)undefined Helv. Phys. Acta, Suppl. II 7 81-undefined
  • [10] Peierls undefined(1980)undefined Phys. Rev. B 22 312-undefined
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