New synthetic approach for the synthesis of liquid crystalline block and graft copolymers

HEPUZER Y., SERHATLI I., Yagci Y.

TURKISH JOURNAL OF CHEMISTRY, vol.21, no.4, pp.286-295, 1997 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 21 Issue: 4
  • Publication Date: 1997
  • Journal Name: TURKISH JOURNAL OF CHEMISTRY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, TR DİZİN (ULAKBİM)
  • Page Numbers: pp.286-295
  • Istanbul Technical University Affiliated: Yes

Abstract

Liquid crystalline block; and graft copolymers were synthesized according to the macroinitiator and macroinimer concept. For this purpose: side chain block copolymers (polytetrahydrofuran-b-polymethylmethacrylate), having liquid crystalline 4,4'-cyanobiphenyl blocks were prepared and characterized. Unlike the liquid-crystalline homopolymer with mesogenic units in the side chain, all block and graft copolymers showed a smectic A mesophase. The transition temperatures are hardly affected by;the composition and molecular weight of the block copolymers.