Use this URL to cite or link to this record in EThOS: http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.716839
Title: An investigation into the influence control agents and microwave heating have upon the synthesis of free radical polymers
Author: Moon , Richard John Lee
Awarding Body: University of Nottingham
Current Institution: University of Nottingham
Date of Award: 2016
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Abstract:
The aim of this thesis was to examine the effect that microwave heating has on polymerisation reactions modified with a range of techniques. The intention was to explain any differences observed between microwave and conventional heating with complete understanding of how the materials used interact with microwave energy. Chapter 1, the introduction chapter, provides an introduction to polymerisation chemistry, and explains important terms which will be used in this thesis. This chapter also provides an introduction into microwave heating, including the mechanisms of microwave heating, and explores some of the controversy surrounding reports of microwave accelerated reactions. Chapter 2 seeks to determine if microwave heating effects polymerisations controlled with chain transfer agents. Chain transfer agents are the most commonly applied industrial technique to control polymerisation reactions. This is performed through investigating the fundamental constant governing chain transfer agents, the chain transfer constant. Reactions were then modified to force conditions thought to be conducive to enhancing microwave reaction differentiation. Chapter 3 examines the effect of microwave heating applied to nitroxide mediated polymerisations. Standard reactions are performed to identify any potential microwave effect, and then different means of accelerating the reaction are examined. This included forcing exothermic conditions on the reactions through significantly increased initiator levels. Chapter 4 examined the effect of microwave heating on the production of hyperbranched polymers, a different polymer architecture to those studied previously. The reactions were performed with a range of different solvents and control agents, which interacted with microwave energy to varying extents, to further probe the effect of microwave heating. Finally these reactions were accelerated using similar techniques as used in Chapter 3 Finally Chapter 5 details how these reactions were performed and the conditions used. This chapter also details the analytical techniques used in this thesis, and describes the condition.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID: uk.bl.ethos.716839  DOI: Not available
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