Use this URL to cite or link to this record in EThOS: http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.682932
Title: Synthesis of α,ω-telechelics by Cu(0)-mediated reversible deactivation radical polymerisation
Author: Simula, Alexandre
ISNI:       0000 0004 5915 7459
Awarding Body: University of Warwick
Current Institution: University of Warwick
Date of Award: 2015
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Abstract:
The objective of this thesis is to explore the versatility of Cu(0)-mediated reversible deactivation radical polymerisation (RDRP) in organic and aqueous media, towards the design of functional telechelic polymers. The interest in telechelic macromolecules, i.e. “prepolymer capable of entering into further polymerisation or other reaction through its reactive end groups” arises from their use as chain extenders, precursors for block-, graft-copolymers and networks by reaction with appropriate reagents. The design of telechelic polymers has stemmed from the development of sophisticated polymerisation tools, to achieve good control over the polymer architecture, molecular weight distribution and perhaps more importantly, chain end fidelity. The limitations and potential of Cu(0)-mediated RDRP technique are tested towards different monomer moieties, solvents and chain end functionalities, with the ultimate goal to expand the scope of functional telechelic polymers. Firstly, the reactivity of the halide end groups is exploited to yield functional telechelic poly(acrylates) with α,ω-hydroxyl groups upon post polymerisation modifications. The macro-diols can be further reacted, via isocyanate end-capping or ring-opening polymerisation. Then, the versatility of the synthetic tool is further tested towards the design of thermo-responsive polymers in water. Acrylamides and acrylates can be copolymerised with good control over the molecular weight distributions and predominantly, chain end fidelity. The typically unwanted hydrolysis of the halide chain ends is further exploited to yield tailor-made diols. Subsequently, the scope of telechelic materials accessible is expanded by careful selection of monomer, ligand, copper source and solvent, yielding well-defined poly(methacrylates) in organic and aqueous media. In the end, the introduction of external halide salts in aqueous media is exploited to generate functional block copolymers with hydrophilic and/or zwitterionic methacrylates in aqueous media.
Supervisor: Not available Sponsor: Lubrizol Corporation
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID: uk.bl.ethos.682932  DOI: Not available
Keywords: QD Chemistry
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