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The Structural Relationships Of Some Glycine Polymers, Roy Alan Williams Jan 1964

The Structural Relationships Of Some Glycine Polymers, Roy Alan Williams

School of Geography, Earth and Environmental Sciences Theses

The Polyglycines are of interest because they are related to nylon and the polyamides, and to the proteins. They resemble nylon in having amine, -NH₂, end groups, and the chains are formed through peptide, C0-NH- linkages. The known Polyglycines are not fibre forming, as products with the required degree of polymerisation have not been prepared, they have a low degree of polymerisation, about 10-20 is the usually recorded value for the number average degree of polymerisation. The degree of polymerisation of the fibre forming polyamides is about 200. The polyglycines may be regarded as the simplest proteins, in that they …


The Settlement Factor In The Rural Problems Of North-East England, John Aruel Edwards Jan 1964

The Settlement Factor In The Rural Problems Of North-East England, John Aruel Edwards

Other Faculty of Science and Engineering Theses

Much attention has been focussed in recent years on the changing distribution of population in North-east England since the Industrial Revolution. In the introduction to his paper on this subject, J. W. House mentions many of the forces which are still in the process of complicating the earlier relatively simple factor of the drift of population from the countryside to the towns. The impacts of international trade systems, the consequences of government economic policies towards both industry and agriculture, the effects of two world wars, and the increased mobility through improved transport are just a few of the elements which …