Preparation of porous polymeric scaffolds via high internal phase emulsion templating

Alsuhaymi, Lamyaa

Chemistry
April 2014

Thesis or dissertation


Rights
© 2014 Lamyaa Alsuhaymi. All rights reserved. No part of this publication may be reproduced without the written permission of the copyright holder.
Abstract

The aims of this project are to synthesise polymeric surfactants, investigate their ability to stabilise high internal phase emulsions (HIPEs) and the structure of porous polymeric materials obtained after polymerising the oil phase of water-in-oil HIPEs (poly-HIPEs). In the first part of the work, group transfer polymerisation (GTP) has been used to synthesise novel diblock copolymer of poly (ethylene glycol) methyl methacrylate-b-poly tetrahydropyranyl methacrylate. 1H NMR and GPC have been used to characterise their composition and molecular weights, respectively. Two diblock copolymers were successfully synthesised, although their composition and molecular weights were significantly different from those anticipated. The second part of the project has studied the stability against coalescence and sedimentation of W/O emulsions in the presence of the amphiphilic PEGMA-b-THPMA diblock copolymers synthesised by us or a commercial low molecular weight surfactant Span 80 (sorbitan monooleate). Finally, the porous polymeric foam with interconnected pore structure has been produced by polymerisation of the styrene containing continuous phase of HIPEs. A remarkably strong effect of the nitrogen gas treatment on the viscosity and stability of HIPEs and the morphology of the porous polymeric scaffolds was obtained from them after polymerisation.

Publisher
Department of Chemistry, The University of Hull
Supervisor
Horozov, Tommy S.
Sponsor (Organisation)
Saudi Arabia
Qualification level
Masters
Qualification name
MSc
Language
English
Extent
3 MB
Identifier
hull:13767
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