Synthesis and phase behaviour of a poly{2,5-bis[(p-ethoxyphenoxy) carbonyl] benzyl acrylate}-based mesogen-jacketed liquid crystalline copolymer

Shaojun Chen, Jinlian Hu, Chunpeng Chai

Research output: Journal article publicationJournal articleAcademic researchpeer-review

1 Citation (Scopus)

Abstract

Mesogen-jacketed liquid crystal polymers have attracted considerable interest in recent years. In this paper, a series of poly (PEPCS)-based mesogen-jacketed liquid crystal copolymers (MJLCPs) with a different 4-hydroxybutyl acrylate (HEA) content has been synthesised and characterised using Fourier transform infrared spectroscopy (FT-IR), differential scanning calorimetry (DSC) and polarising optical microscopy (POM). The hydroxyl groups are attached to the backbone in the PEPCS-co-HEA copolymers to facilitate further chemical crosslinking. These PEPCS-based MJLCPs show a reversible phase transition when the HEA content is lower than 30 wt%. Tgand Tishift to lower temperatures as the HEA content increases. POMstudies reveal that the PEPCS and PEPCS-co-HEA copolymers all show a transition from the nematic to isotropic phase on heating and from the isotropic to nematic phase on cooling. Below Tg, the long range orientational ordering of the mesogenic units is fixed.
Original languageEnglish
Pages (from-to)657-662
Number of pages6
JournalLiquid Crystals
Volume38
Issue number5
DOIs
Publication statusPublished - 1 May 2011

Keywords

  • Liquid crystalline polymer
  • Phase transition
  • Polymer synthesis
  • Smart polymer

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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