Two stilbene-containing polyethers(PSEG

PSV) were synthesized and their thermotropic liquid crystalline behavior was investigated. The respective backbone polymers

poly(glycidyl 2-chloroethyl ether)

P(GCE)

and poly(glycidyl 2-chloroethyl ether)-co-4-hydroxybutyl vinyl ether)

P(GCE-co-HBVE)

were prepared by cationic polymerization and photo copolymerization respectively.Liquid crystal polyether PSEG

PSV were synthesized through the macromolecular reaction of P(GCE) and P(GCE-co-HBVE) with 4-nitro-4′-hydroxy stilbene (NHS) respectively.The chemical structures and chromophore contents of these polyethers were characterized by means of FTIR

1H-NMR and EA. The phase transition temperature

texture structure

thermal stability and phase behavior were investigated by POM

DSC

TGA and WAXD.The results showed that these polyethers were nematic bitropic liquid crystals with low and wide phase transition temperatures

as well as good thermal stability.