Effect of polymer concentration on morphology, dielectric and optical properties in a polymer-dispersed ferroelectric liquid crystal. Issue 5 (8th April 2016)

• Record Type: Journal Article
• Authors: Jayoti, Divya; Khushboo, ; Malik, Praveen; Singh, Arshdeep
• Is Part Of: Liquid crystals. Volume 43:Issue 5(2016)
• Page Start: 623
• Page End: 631
• Publication Date: 2016-04-08
• Subjects: PDFLCs -- dielectric relaxation -- droplet morphology -- band gap -- ac conductivity -- relaxation frequency; Liquid crystals -- Periodicals; 548.905
• DOI: 10.1080/02678292.2015.1130867
• Languages: English
• ISSNs: 0267-8292

Abstract

ABSTRACT: Photocurable polymer-dispersed ferroelectric liquid crystal were prepared by polymerisation-induced phase separation (PIPS). Morphological behaviour was analysed by polarising optical microscopy (POM) and scanning electron microscopy (SEM). FLC droplet size was found in the range of ~ 2–70 µm and decreases with an increase in polymer content. Relaxation frequency, dielectric strength and ac conductivity were evaluated as a function of polymer concentration and it was concluded that the polymer concentration has a significant effect on these parameters. The energy band gap ( ) increases with polymer concentration and was found in the range of ~ 3.3 eV at higher concentration of polymer. Graphical Abstract: