Abstract
A graft side-chain crystalline polymer PI with polysiloxane as backbone and a liquid crystal polymer, poly{6-(4′-octyloxyphenyl-4″-benzoyl)hexyl acrylate}, as side chain has been synthesized via atom transfer radical polymerization (ATRP) technique. Attaching mesogenic polymers to the polysiloxane main chain through ATRP technique brings about the high density of mesogenic units and avoids the subsequent crosslinking reaction by the residual Si–H in the traditional hydrosilylation. The properties of the graft liquid crystal polymer PI was studied in detail by TGA, DSC, POM and XRD. Thermal analysis shows that the polymer PI has wider mesophase temperature ranges with a high thermal stability in comparison to its mesogenic monomer.
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