Reference numberMS/919
TitleThesis, 'Studies in the fluorination of some halogen containing polymers', by Brian Richard John Thomas
CreatorBrian Richard John Thomas
DateOctober 1946
DescriptionD.Phil thesis submitted by B.J.R. Thomas as as candidate at the University of Birmingham, supervised by Professor W.N. Haworth FRS and Professor M. Stacey.

List of contents;
General Introduction
Section I
The production of fluorine
The preparation of cobalt trifluoride
The preparation of silver difluoride
Description of apparatus

Section II Stabilization of Polymeric Fluoro and Chlorofluoro lubricants
Stabilisation of the benzotrifluoride polymer
The effect of the silver difluoride method of stabilisation on some chlorofluoropolymers
Production of a UF6 resistant lubricant from a polymer obtained by the polymerisation of perfluorovinyl chloride
A review of the methods developed for the production of a lubricant resistant to uranium hexafluoride
Considerations of the mechanism of polymerisation and stabilisation

Section III Some reactions of silver difluoride
Reaction of silver difluoride with non-chlorine containing substances
Reaction of silver difluoride with chlorine containing compounds

Concerns one of the fundamental problems of the atomic energy project, the efficient separation of the uranium isotope U235 from naturally occurring uranium which is principally a mixture of two isotopes U238 and U235, the ratio of the former to the latter being approximately 140:1 Of the two main methods available for their separation, namely electromagnetic separation and diffusion separation, the second appeared the most attractive since although it did not give as high a separation factor as the electromagnetic method, it was capable of operation on a much larger scale. Attention was accordingly fixed on the diffusion separation (although subsequently the electromagnetic method was developed elsewhere) for which a gaseous compound of uranium was required.
FormatTypescript copy
Physical descriptionOn paper, with photographic illustrations.
Access statusOpen
Administrative historyInformation provided by his daughter: 'Sent to Birmingham University a year younger than his peers and at University he was exempted from military service. He mixed with some of the atom bomb people including one of those who flew in the 'Enola Gay' to deliver the bomb to Hiroshima. That person was radio active for some time, I understand. All Father told me was that his study was to find a gas in which a nuclear explosion could take place. He spoke of someone called Cockcroft..''

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