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  • 2019TaylorPhD

    Final published version, 7.99 MB, PDF document

    Embargo ends: 6/11/24

    Available under license: CC BY-NC-ND

  • 2019TaylorPhDMovie1

    Final published version, 399 MB, video/mp4

    Embargo ends: 6/11/24

    Available under license: CC BY-NC-ND

  • 2019TaylorPhDMovie2

    Final published version, 9.18 MB, video/mp4

    Embargo ends: 6/11/24

    Available under license: CC BY-NC-ND

  • 2019TaylorPhDMovie3

    Final published version, 229 MB, video/mp4

    Embargo ends: 6/11/24

    Available under license: CC BY-NC-ND

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Stimuli-responsive liquid crystal elastomer microparticles

Research output: ThesisDoctoral Thesis

Unpublished
Publication date2019
Number of pages273
QualificationPhD
Awarding Institution
Supervisors/Advisors
Publisher
  • Lancaster University
Original languageEnglish

Abstract

This thesis centres on the creation of nematic and chiral nematic polymer and elastomer microparticles, with defined confinement textures due to surface anchoring from the host solvent, using a series of novel nematic and chiral nematic monomers. Droplets were produced using a homemade microfluidic technique and photo-polymerised into particles, followed by an analysis of the responsive properties. The synthesis of nematic and chiral nematic monomers, polymers and elastomers, as well as the characterisation of their thermal and optical properties is presented. Chiral nematic mixtures were polymerised into thin-films capable of visible selective reflection and which experience a pitch contraction upon removal of a chiral dopant. The design and development of a
microfluidic chip to create monodisperse droplets is discussed. The droplets were photopolymerised by two methods into elastomer particles and the reversible shape change responses to temperature were analysed. Monodisperse chiral nematic droplets and particles were made, using the monomer mixtures established together with the microfluidic technique developed, and concluded with an investigation of the responsiveness of the particles to external stimuli.