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Title: In situ synthesis, study and characterisation of polymer-layered double hydroxide nanocomposites
Author: Hickey, J. P.
Awarding Body: University of Cambridge
Current Institution: University of Cambridge
Date of Award: 2004
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The work described, explores the in situ synthesis of layered double hydroxide (LDH) - polymer nanocomposites by the free radical polymerisation of a variety of methacrylate monomers and styrene. Dividing the developed in situ methodology into two stages, LDH / monomer dispersion and dispersion polymerisation, the factors affecting nanocomposite formation were investigated. Chapter two details the synthesis and study of various Mg / Al and Mg / Fe containing LDHs, prepared using co-precipitation and direct anion exchange methodologies. Particular attention was given to be organically modified LDHs used for nanocomposite synthesis in order to better understand their interlayer structure. Chapter three investigates liquid / LDH interactions by studying LDH dispersions in a variety of monomers and solvents. Hansen Solubility Parameters are used to help rationalise the increased affinity of LDH for some liquids over others. Chapter four investigates the influence of free radical initiators and the rate of polymerisation on LDH - poly(2-hydroxyethyl methacrylate) nanocomposite formation. Chapter 5 deals with the influence of monomers on in situ nanocomposite formation and the characterisation of the resulting nanocomposites. Chapter 6 details a new solid state NMR technique, developed to investigate LDH exfoliation and polymer - LDH interactions.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available