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Journal of Optics

, Volume 37, Issue 1, pp 9–15 | Cite as

Study of PDLC and PDCLC Mixtures using Various Techniques

  • Anita Kanwar
  • J. Gupta Sureshchandra
  • Sanjay Patil
  • Gowher B. Vakil
Article
  • 33 Downloads

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.

Keywords

Polymer dispersed cholesteric liquid crystal differential thermal Analysis Fabry Perot Scattering Studies Fourier Transform Infra-red (FTIR) Spectroscopy 

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Copyright information

© Optical Society of India 2008

Authors and Affiliations

  • Anita Kanwar
    • 1
  • J. Gupta Sureshchandra
    • 2
  • Sanjay Patil
    • 3
  • Gowher B. Vakil
    • 4
  1. 1.Dept. of PhysicsVES College of Arts, Science & Com. Sindhi Society
  2. 2.Department of PhysicsUniversity of MumbaiVidyanagari
  3. 3.Department of ChemistryUniversity of MumbaiVidyanagari
  4. 4.Department of PhysicsUniversity of KashmirSrinagar

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