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Home  >  Journal list  >  Polymer Journal  >  Vol.27  No.10 (1995)  >  pp.993-1001

Polymer Journal
<<Previous article Vol.27  No.10 (1995)   pp.993 - 1001 Next article>>

Hybrid Liquid-Crystalline Block Copolymers I. Synthesis and Mesomorphic Behavior of Polyester–Polymethacrylate Block Copolymers

Michele Laus1), Maria Chiara Bignozzi1), Annino Sante Angeloni1), Oriano Francescangeli2), Giancarlo Galli3) and Emo Chiellini3)
1) Dipartimento di Chimica Industriale e dei Materiali, Università di Bologna
2) Dipartimento di Scienze dei Materiali e della Terra, Università di Ancona
3) Dipartimento di Chimica e Chimica Industriale, Università di Pisa


ABSTRACT:  A new type of block copolymers comprising both main-chain and side-chain liquid-crystalline (LC) blocks in the same macromolecular structure was synthesized and studied. The former was a semiflexible LC polyester block, and the latter was an LC polymethacrylate block. Thermal, dynamic-mechanical, and X-ray diffraction data indicated that the two structurally different blocks were partly phase-separated in the glassy and LC states. Significant deviations of the transition temperatures and enthalpies were observed relative to those of the corresponding homopolymers.


Keyword:
Block Copolymer/ Liquid-Crystalline Copolymer/ Polyester Block/ Polymethacrylate Block/ Phase Separation

Published online: April 03, 2005
© Copyright, 2005 by The Society of Polymer Science, Japan

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