Polymer Bulletin

, Volume 61, Issue 3, pp 383–390

Molecular Orientation of Liquid Crystal on Polymer Blends of Coumarin and Naphthalenic Polyimide

  • Hyundae Hah
  • Shi-Joon Sung
  • Kuk Young Cho
  • Jung-Ki Park
Article

DOI: 10.1007/s00289-008-0955-1

Cite this article as:
Hah, H., Sung, SJ., Cho, K.Y. et al. Polym. Bull. (2008) 61: 383. doi:10.1007/s00289-008-0955-1

Abstract

Photo-induced liquid crystal alignment layers were prepared by blending polyimides and photoreactive polymers followed by polarized UV irradiation. Polyimides are selected for the purpose of improving the thermal stability of the molecular orientation of the photoreactive groups. The thermal stability of the LC alignment layer was enhanced regardless of the type of the polyimide while the direction of LC orientation was dependent on the type of polyimide. The photoreactivity of the polyimide governs the LC orientation in the blend alignment layers.

Copyright information

© Springer-Verlag 2008

Authors and Affiliations

  • Hyundae Hah
    • 1
  • Shi-Joon Sung
    • 2
  • Kuk Young Cho
    • 3
  • Jung-Ki Park
    • 1
  1. 1.Department of Chemical and Biomolecular EngineeringKorea Advanced Institute of Science and TechnologyDaejeonKorea
  2. 2.Division of Nano-Bio TechnologyDaegu Gyeongbuk Institute of Science and TechnologyDaeguKorea
  3. 3.Division of Advanced Materials EngineeringKongju National UniversityCheonanKorea