Dynamic Analysis of Polymer-Dispersed Liquid Crystal by Infrared Spectroscopy

1993 ◽  
Vol 47 (9) ◽  
pp. 1386-1389 ◽  
Author(s):  
Ray Hasegawa ◽  
Masanori Sakamoto ◽  
Hideyuki Sasaki
Keyword(s):  
Infrared Spectroscopy ◽  
Liquid Crystal ◽  
Side Chain ◽  
Two Dimensional ◽  
Rigid Core ◽  
Polymer Dispersed Liquid Crystal ◽  
2D Ir ◽  
Polymer Dispersed ◽  
Polymerization Induced Phase Separation ◽  
Two Dimensional Infrared Spectroscopy

The dynamic behavior of a polymer-dispersed liquid crystal (PDLC) under an electric field has been studied by static and two-dimensional infrared spectroscopy. The PDLC sample was prepared by polymerization-induced phase separation of a mixture of nematic liquid crystal E7 and acrylate. 2D IR correlation analysis indicates that the rigid core of the liquid crystal molecules reorients as a unit, and suggests that the polymer side chain existing in the interface between the polymer and the liquid crystals may reorient in phase with the liquid crystal reorientation by interaction with the liquid crystal molecules.

Two-dimensional photonic lattices in polymer-dispersed liquid crystal composites

2009 ◽  
Vol 11 (2) ◽  
pp. 024020 ◽  
Author(s):  
M Devetak ◽  
J Milavec ◽  
R A Rupp ◽  
B Yao ◽  
I Drevenšek-Olenik
Keyword(s):  
Liquid Crystal ◽  
Two Dimensional ◽  
Polymer Dispersed Liquid Crystal ◽  
Photonic Lattices ◽  
Polymer Dispersed

Development of Two-Dimensional Hexagonal Lattice Variable Line-Space Grating Based on Polymer-Dispersed Liquid Crystal

2018 ◽  
Vol 45 (8) ◽  
pp. 0809001
Author(s):  
缪涛 Miao Tao ◽  
郑继红 Zheng Jihong ◽  
王康妮 Wang Kangni ◽  
刘悠嵘 Liu Yourong ◽  
黄新荣 Huang Xinrong ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Hexagonal Lattice ◽  
Two Dimensional ◽  
Polymer Dispersed Liquid Crystal ◽  
Variable Line ◽  
Polymer Dispersed ◽  
Lattice Variable ◽  
Line Space

Influence of the Polymer Matrix on the Bipolar and Radial Droplet Configurations within PDLC Films Examined by Infrared Spectroscopy

1993 ◽  
Vol 47 (5) ◽  
pp. 598-605 ◽  
Author(s):  
Coleen A. McFarland ◽  
Jack L. Koenig ◽  
John L. West
Keyword(s):  
Infrared Spectroscopy ◽  
Liquid Crystal ◽  
Polymer Matrix ◽  
Butyl Methacrylate ◽  
Droplet Growth ◽  
Thermally Induced ◽  
Polymer Dispersed Liquid Crystal ◽  
Polymer Dispersed ◽  
Ft Ir ◽  
Configuration Changes

The influence of the polymer matrix on the liquid crystal droplet configuration within a polymer-dispersed liquid crystal (PDLC) film is studied with the use of infrared spectroscopy. With a change of the polymer from poly( n-butyl methacrylate) to poly(isobutyl methacrylate) with the use of E7 liquid crystal, the droplet configuration changes from bipolar to radial. For both of these PDLC systems with 80:20, 70:30, and 60:40 E7/polymer compositions, the LC droplets grow in diameter with time. The spectroscopic data monitoring the droplet growth are described exponentially. A transition temperature is observed as both types of PDLCs cool, forming droplets by the thermally induced phase-separation technique. The TN-I, transition for the E7/PBMA PDLC appears at 46°C and for the E7/PIBMA PDLC appears at 51°C. Index Headings: FT-IR spectroscopy; Polymer-dispersed liquid crystals (PDLC).

C−D Modes of Deuterated Side Chain of Leucine as Structural Reporters via Dual-frequency Two-dimensional Infrared Spectroscopy

2009 ◽  
Vol 113 (14) ◽  
pp. 4940-4946 ◽  
Author(s):  
Sri Ram G. Naraharisetty ◽  
Valeriy M. Kasyanenko ◽  
Jörg Zimmermann ◽  
Megan C. Thielges ◽  
Floyd E. Romesberg ◽  
...  
Keyword(s):  
Infrared Spectroscopy ◽  
Side Chain ◽  
Two Dimensional ◽  
Dual Frequency ◽  
Two Dimensional Infrared Spectroscopy

Dependence of the Morphology of Polymer Dispersed Liquid Crystal on Temperature

2010 ◽  
Vol 663-665 ◽  
pp. 804-807 ◽  
Author(s):  
Qing Lan Ma ◽  
Yuan Ming Huang
Keyword(s):  
Liquid Crystal ◽  
Phase Separation ◽  
Optical Microscope ◽  
Polymer Dispersed Liquid Crystal ◽  
Crystal Film ◽  
Polymer Dispersed ◽  
Polymerization Induced Phase Separation

Polymer dispersed liquid crystal film was prepared by the method of polymerization induced phase separation. The optical morphologies of the PDLC film were characterized by polarized optical microscope with a hot stage. Our results demonstrated that the morphology of the PDLC film depended on temperature of PDLC system.

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