M. Laus et al., HYBRID LIQUID-CRYSTALLINE BLOCK-COPOLYMERS .1. SYNTHESIS AND MESOMORPHIC BEHAVIOR OF POLYESTER-POLYMETHACRYLATE BLOCK-COPOLYMERS, Polymer Journal, 27(10), 1995, pp. 993-1001
A new type of block copolymers comprising both main-chain and side-cha
in liquid-crystalline (LC) blocks in the same macromolecular structure
was synthesized and studied. The former was a semiflexible LC polyest
er block, and the latter was an LC polymethacrylate block. Thermal, dy
namic-mechanical, and X-ray diffraction data indicated that the two st
ructurally different blocks were partly phase-separated in the glassy
and LC states. Significant deviations of the transition temperatures a
nd enthalpies were observed relative to those of the corresponding hom
opolymers.