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Morphology and preparation of polymer dispersed liquid crystals by solvent-induced phase separation method

S. MUTLU YANIC1, H. OCAK2, F. CAKAR2, B. BILGIN-ERAN2, D. GUZELLER2, O. CANKURTARAN2,*

Affiliation

  1. Istanbul Gedik University, Department of Chemistry Technology Programme, Pendik Campus, 34906, Istanbul, Turkey
  2. Yildiz Technical University, Department of Chemistry, Davutpasa Campus, 34220, Esenler, Istanbul, Turkey

Abstract

A new salicylaldimine based chiral calamitic liquid crystal 5-((S)-3,7-dimethyloctyloxy)-2-[[[4-(octyloxy) phenyl]imino]methyl]phenol (DOPIMP) has been synthesized and characterized by spectroscopic methods (1H-NMR and 13C-NMR). Polymer dispersed liquid crystal (PDLC) composite films were prepared from poly(methyl methacrylate) (PMMA) and DOPIMP by solvent-induced phase separation (SIPS) method. Polymer and LC composite films were controlled with ratio 20:80(wt.%LC) and 30:70(wt.%LC). The mesomorphic behavior of DOPIMP liquid crystal has been investigated by differential scanning calorimetry (DSC) and optical polarizing microscopy (PM). The mesophase of PDLC composite films were characterized by PM and the morphology of the PDLC composite films was studied using a scanning electron microscope (SEM)..

Keywords

Polymer dispersed liquid crystal, Composite films, Poly(methyl methacrylate).

Citation

S. MUTLU YANIC, H. OCAK, F. CAKAR, B. BILGIN-ERAN, D. GUZELLER, O. CANKURTARAN, Morphology and preparation of polymer dispersed liquid crystals by solvent-induced phase separation method, Optoelectronics and Advanced Materials - Rapid Communications, 11, 1-2, January-February 2017, pp.77-81 (2017).

Submitted at: April 12, 2016

Accepted at: Feb. 10, 2017