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Study of PDLC and PDCLC Mixtures using Various Techniques

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Abstract

Polymer Dispersed Liquid Crystal (PDLC) and Polymer Dispersed Cholesieric Liquid Crystal (PDCLC)fdms were prepared by thermal-induced phase separation method. PDLC and PDCLC films are analyzed using Fabry Parol Scattering Studies (FPSS), Differential Thermal Analysis (DTA) and Fourier Transform Infra-red (FTIR) Spectroscopy. Changes in the structure, phase transition temperatures (PTTs) and clearing temperatures i.e. the temperature at which the material becomes isotropic are listed. FTIR spectrometer is used to find the structural changes due to the addition of cholesteric material to PDLC. DTA technique is used to corroborate the results obtained using the FPSS technique.

Present studies reveals that the PDCLC samples are a homogeneous mixture at the room temperature. Transmission intensity and hence the homogeneity of the samples is seen to be maximum for the PDCLC sample containing 80% (80% TL205+20% Cholesteryl Pelargonate) + 20%PN393. Approximate range of percentage transmission decreases as the concentration of the cholesteric material increases.

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Authors and Affiliations

  1. Dept. of Physics, VES College of Arts, Science & Com. Sindhi Society, Chembur cMumbai, 400 071

    Anita Kanwar

  2. Department of Physics, University of Mumbai, Vidyanagari, 400 098

    J. Gupta Sureshchandra

  3. Department of Chemistry, University of Mumbai, Vidyanagari, 400 098

    Sanjay Patil

  4. Department of Physics, University of Kashmir, Srinagar, 190018

    Gowher B. Vakil

Authors
  1. Anita Kanwar
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  2. J. Gupta Sureshchandra
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  3. Sanjay Patil
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  4. Gowher B. Vakil
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Kanwar, A., Sureshchandra, J.G., Patil, S. et al. Study of PDLC and PDCLC Mixtures using Various Techniques. J Opt 37, 9–15 (2008). https://doi.org/10.1007/BF03354832

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  • DOI: https://doi.org/10.1007/BF03354832

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