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8307311 
Journal Article 
Fine adjustment of network in polymer network liquid crystal film employing RAFT polymerization 
He, J; Yan, B; Yu, B; Wang, S; Wang, X; Wang, J; Zeng, Y; Ran, R; Wang, Y 
2008 
Yes 
Journal of Polymer Science. Part A, Polymer Chemistry
ISSN: 0887-624X
EISSN: 1099-0518 
WILEY-BLACKWELL 
MALDEN 
46 
9 
3140-3144 
English 
WOS:000255508500024 
The influence of reversible addition fragmentation transfer (RAFT) polymerization on the electro-optical properties of polymer network liquid crystal (PNLC) film was investigated. The photoactive solution was obtained by dissolving RAFT-PS in fresh 1,6-hexane-diol discrylate (HDDA) with a predetermined ratio. PNLC films were prepared by polymerization induced phase separation (PIPS from a homogenous mixture of photoactive solution, liquid crystal and photoinitiator. A small amount of reactive mixture was attached between glass substrates covered with indium-tin-oxide (ITO). Contact angles were measured with an OCA20 contact angle goniometer. The result show that the pore of polymer network increased with an increase of the concentration of RAFT-PS. It was observed that the size of liquid crystal polydomain increased with the concentration of RAFT-PS, which caused the decrease of the threshold and saturation voltage. 
Electro-optical properties; Films; Liquid-crystalline; PDLC; PNLC; Reversible addition fragmentation chain transfer (RAFT)