Factors Affecting In-Plane and Out-of-Plane Photoorientation of Azobenzene Side Chains Attached to Liquid Crystalline Polymers Induced by Irradiation with Linearly Polarized Light

2000 ◽  
Vol 33 (17) ◽  
pp. 6360-6371 ◽  
Author(s):  
Mina Han ◽  
Shin'ya Morino ◽  
Kunihiro Ichimura
Keyword(s):  
Liquid Crystalline ◽  
Polarized Light ◽  
Liquid Crystalline Polymers ◽  
Side Chains ◽  
Factors Affecting ◽  
Crystalline Polymers ◽  
Out Of Plane ◽  
Linearly Polarized

Factors affecting microstructural scale in liquid crystalline polymers

1990 ◽  
Vol 48 (4) ◽  
pp. 220-221
Author(s):  
Christine M. Dannels ◽  
Christopher Viney
Keyword(s):  
Liquid Crystalline ◽  
Liquid Crystalline Polymers ◽  
Factors Affecting ◽  
Crystalline Polymers ◽  
Thermal Expansion Coefficients ◽  
Low Thermal Expansion ◽  
Lower Viscosity ◽  
Fine Microstructure ◽  
Planar Orientation ◽  
Strength And Stiffness

Processing polymers from the liquid crystalline state offers several advantages compared to processing from conventional fluids. These include: better axial strength and stiffness in fibers, better planar orientation in films, lower viscosity during processing, low solidification shrinkage of injection moldings (thermotropic processing), and low thermal expansion coefficients. However, the compressive strength of the solid is disappointing. Previous efforts to improve this property have focussed on synthesizing stiffer molecules. The effect of microstructural scale has been overlooked, even though its relevance to the mechanical and physical properties of more traditional materials is well established. By analogy with the behavior of metals and ceramics, one would expect a fine microstructure (i..e. a high density of orientational defects) to be desirable.Also, because much microstructural detail in liquid crystalline polymers occurs on a scale close to the wavelength of light, light is scattered on passing through these materials.

Polar Liquid Crystalline Polymers Bearing Mesogenic Side Chains with Large Dipole Moment

2021 ◽  
Author(s):  
Shuqi Dai ◽  
Jinxing Li ◽  
Junichi Kougo ◽  
Huanyu Lei ◽  
Satoshi Aya ◽  
...  
Keyword(s):  
Dipole Moment ◽  
Liquid Crystalline ◽  
Liquid Crystalline Polymers ◽  
Polar Liquid ◽  
Side Chains ◽  
Crystalline Polymers

Synthesis and Phase Structures of Mesogen-Jacketed Liquid Crystalline Polymers Containing 1,3,4-Oxadiazole Based Side Chains

2007 ◽  
Vol 40 (26) ◽  
pp. 9361-9370 ◽  
Author(s):  
Chun-Peng Chai ◽  
Xing-Qi Zhu ◽  
Ping Wang ◽  
Min-Qiao Ren ◽  
Xiao-Fang Chen ◽  
...  
Keyword(s):  
Liquid Crystalline ◽  
Liquid Crystalline Polymers ◽  
Side Chains ◽  
Crystalline Polymers ◽  
Phase Structures

Mobility of mesogenic side-chains in liquid crystalline polymers based on the Baylis-Hillman reaction

1999 ◽  
Vol 200 (5) ◽  
pp. 1222-1231 ◽  
Author(s):  
David Lacey ◽  
Alan W. Hall ◽  
Peter N. Lavrenko ◽  
Natalia P. Yevlampieva ◽  
Olga V. Okatova ◽  
...  
Keyword(s):  
Liquid Crystalline ◽  
Liquid Crystalline Polymers ◽  
Side Chains ◽  
Crystalline Polymers
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