Thin Films of Liquid Crystalline Polymers as Alignment Layers for Liquid Crystal Displays

1993 ◽  
Vol 225 (1) ◽  
pp. 259-268 ◽  
Author(s):  
M. Murakami ◽  
H. Fujii
Keyword(s):  
Thin Films ◽  
Liquid Crystal ◽  
Liquid Crystalline ◽  
Liquid Crystalline Polymers ◽  
Liquid Crystal Displays ◽  
Crystalline Polymers ◽  
Alignment Layers

Corona-charged thin films composed from antiferroelectric solid mixtures of achiral side-chain liquid crystalline polymers and their monomers

2000 ◽  
Vol 247 (1) ◽  
pp. 343-354 ◽  
Author(s):  
S. V. Yablonskii ◽  
T. Weyrauch ◽  
S. Grossmann ◽  
R. Werner ◽  
E. A. Sotobustamante ◽  
...  
Keyword(s):  
Thin Films ◽  
Liquid Crystalline ◽  
Liquid Crystalline Polymers ◽  
Side Chain ◽  
Crystalline Polymers

Chiral Liquid Crystalline Polymers Containing Isosorbide Groups

2013 ◽  
Vol 781-784 ◽  
pp. 403-406
Author(s):  
Mei Tian ◽  
Zhi Xin Xu ◽  
Li Gao ◽  
Dan Shu Yao ◽  
Xiao Zhi He ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Liquid Crystalline ◽  
Main Chain ◽  
Liquid Crystalline Polymers ◽  
Optical Microscope ◽  
Liquid Crystal Polymers ◽  
X Ray Diffraction ◽  
Scanning Calorimetry ◽  
X Ray ◽  
Crystalline Polymers

A series of new main-chain liquid-crystal polymers (LCPs) were prepared from sebacoyl chloride (SD) and various amount of 4, 4-Dihydroxy-2, 2-dimethyl Benzalazine (DDBA) and isosorbide (ISO). The liquid crystal (LC) properties were investigated by polarized optical microscope (POM), differential scanning calorimetry (DSC) and X-ray diffraction measurements. P1 exhibited a typical nematic thread texture, which contains no ISO. P2-P7 are Sc* and N LCPs, which exhibited broken fan-shaped texture and droplet texture. The introduction of chiral units into the polymers led to a change of mesomorphase, as compared with P1.

Fracture behavior of heat treated liquid crystalline polymers

2012 ◽  
Vol 1485 ◽  
pp. 137-142 ◽  
Author(s):  
A. Reyes-Mayer ◽  
B Alvarado-Tenorio ◽  
A Romo-Uribe ◽  
O Flores ◽  
B Campillo ◽  
...  
Keyword(s):  
Thin Films ◽  
Thermal Treatment ◽  
Thermal Behavior ◽  
Fracture Behavior ◽  
Liquid Crystalline ◽  
Liquid Crystalline Polymers ◽  
Thermally Induced ◽  
Crystalline Polymers ◽  
Heat Treated ◽  
Mechanical Modulus

ABSTRACTThermotropic polymers are thermally treated in air at temperatures Ta, where ΔT =Ta- Ts→n=40°C, and Ts→n is the solid-to-nematic transition. Samples are extruded thin films of a series of thermotropic random copolyesters termed B-N, COTBP and RD1000. The thermal treatment produces a second endotherm without changing Ts→n for B-N and RD1000. However, for COTBP Ts→n is significantly increased. Regardless of the complex thermal behavior exhibited by the thermotropes, the thermal treatment produces a significant increase in Young's modulus, more than 30% for B-N and over 100% for COTBP. The increase in mechanical modulus is correlated with a thermally-induced fiber-like morphology.

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