Tunable selective reflection of a hydroxypropyl cellulose aqueous solution

2011 ◽  
Author(s):  
Yui Kimbara ◽  
Shunsuke Yuji ◽  
Sadahito Uto
Keyword(s):  
Aqueous Solution ◽  
Hydroxypropyl Cellulose ◽  
Selective Reflection

Effects of pressure on the behavior of (hydroxypropyl)cellulose in aqueous solution

2001 ◽  
Vol 279 (11) ◽  
pp. 1139-1143 ◽  
Author(s):  
S. Kunugi ◽  
D. Yoshida ◽  
H. Kiminami
Keyword(s):  
Aqueous Solution ◽  
Hydroxypropyl Cellulose

Study of Casting Self-Colored Liquid Crystalline Solid Films of Hydroxypropyl Cellulose

2013 ◽  
Vol 341-342 ◽  
pp. 217-220
Author(s):  
Qin Xing Zhang ◽  
Li Qian ◽  
Li Xia Wang ◽  
S. Stuto ◽  
Chang Yu Shen
Keyword(s):  
Visible Light ◽  
Liquid Crystalline ◽  
Solution Concentration ◽  
Hydroxypropyl Cellulose ◽  
Crystalline Solid ◽  
Selective Reflection ◽  
Solid Films ◽  
Colored Coating ◽  
Cooling Velocity ◽  
Cholesteric Liquid Crystalline

Solutions of lyotropic cholesteric liquid crystalline hydroxypropyl cellulose (HPC) in water would be self-colored due to the selective reflection of visible light, depending on the solution concentration. Colored coating of the liquid crystalline aqueous HPC solutions was attempted to apply. HPC solid films were found which could cast from the liquid crystalline solutions at different conditions such as solution concentration and different drying temperature. Experiments show that both solution concentration and cooling velocity play an important effect in controlling the color of HPC films.

Effect of residual linear orientation on the optical properties of cholesteric films

1988 ◽  
Vol 66 (9) ◽  
pp. 2229-2233 ◽  
Author(s):  
Anna M. Ritcey ◽  
Gérard Charlet ◽  
Derek G. Gray
Keyword(s):  
Liquid Crystalline ◽  
Potential Problem ◽  
Polarization State ◽  
Polarized Light ◽  
Hydroxypropyl Cellulose ◽  
Reflection Band ◽  
Selective Reflection ◽  
Circularly Polarized Light ◽  
Oriented Film ◽  
Simple Consideration

The apparent circular dichroism arising from the selective reflection of circularly polarized light by cholesteric films of (hydroxypropyl)cellulose is extremely sensitive to residual linear orientation. The introduction of a uniaxially oriented film in the spectropolarimeter beam in front of a liquid crystalline sample may change both the intensity and the sign of the observed mesophase reflection band. The results can be understood by a simple consideration of the way in which the polarization state of light is altered as it traverses the birefringent film. These observations emphasize a potential problem in the use of circular reflectivity as a method to characterize the reflection properties of polymeric cholesteric liquid crystals. The presence of linear orientation in such samples can give rise to artifacts.

Modified adsorbent hydroxypropyl cellulose xanthate for removal of Cu2+ and Ni2+ from aqueous solution

2016 ◽  
Vol 57 (56) ◽  
pp. 27419-27431 ◽  
Author(s):  
Yongzhong Zhang ◽  
Chengcheng Luo ◽  
Hui Wang ◽  
Li Han ◽  
Chongqing Wang ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Cellulose Xanthate ◽  
Hydroxypropyl Cellulose
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