The Stability of Liquid Crystal-in-Water Dispersions Stabilized with Copolymers of Acrylamide

✍ Scribed by Anatoly Kim; Hyung-Joong Kim; Jae-Rock Lee

• Publisher: Elsevier Science
• Year: 1997
• Tongue: English
• Weight: 174 KB
• Volume: 188
• Category: Article
• ISSN: 0021-9797
• DOI: 10.1006/jcis.1996.4747

✦ Synopsis

refractive indices between LC and polymer matrix is the A mixture of nematic liquid crystals, E-7, was dispersed by main reason for opaqueness.

using several water soluble acrylamide copolymers. The copoly-

In dispersion technology how to regulate the size and mers were synthesized by copolymerization of acrylamide with stabilize the dispersion droplets are so important that the hydrophobic monomers such as styrene and methyl methacryproperties of the film formed will depend on those paramelate. The steric stabilization of the liquid crystal-in-water disperters (5). The dispersion of LC in the medium of water sion was achieved by these copolymers. It was found that prefersoluble polymer solution has not been studied widely. Howential adsorption hydrophobic moieties onto the liquid crystal droplet surface resulted in steric stabilization of the dispersion. ever, this issue still remains interesting both from theoretical This stable liquid crystal-in-water dispersion can be used to and practical viewpoints. On the other hand, the application fabricate nematic curvilinear aligned phase from aqueous polyof water soluble polymers containing hydrophobic chains to mer systems.