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Polarized light scattering and off-state transmission of electron-beam cured polymer dispersed liquid crystals

MPS-Authors
http://pubman.mpdl.mpg.de/cone/persons/resource/persons48271

Leclercq,  L.
MPI for Polymer Research, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons47851

Ewen,  Bernd
MPI for Polymer Research, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons48541

Pakula,  Tadeusz
MPI for Polymer Research, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons47635

Benmouna,  M.
MPI for Polymer Research, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons48392

Maschke,  U.
MPI for Polymer Research, Max Planck Society;

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Citation

Mechernene, L., Leclercq, L., Ewen, B., Pakula, T., Benmouna, M., Coqueret, X., et al. (2002). Polarized light scattering and off-state transmission of electron-beam cured polymer dispersed liquid crystals. Molecular Crystals and Liquid Crystals, 375, 321-328.


Cite as: http://hdl.handle.net/11858/00-001M-0000-000F-66E0-F
Abstract
Polarized Light Scattering (LS) experiments are performed on thin Electron-Beam (EB) cured polymer precursor/liquid crystal (LC) films. The polarized component I-vv is obtained for irradiated blends of a low molecular weight aromatic polyester acrylate, additional monomers like tripropyleneglycoldiacrylate, and the nematic LC mixture of cyanoparaphenylene derivatives known under the tradename E7 (Merck). The whole composition range between the pure cured polymer precursor and E7 was covered by exposing the corresponding initial samples to constant EB-curing conditions. Only the light scattering of polymer/LC films with no external fields is considered here and the results are compared with additional measurements of the optical off-state transmission. The results obtained from LS and transmission experiments are in excellent agreement.