Outputs (251)

The cationic polymerization of ketene acetals
Thesis
Dunn, D. J. (1973). The cationic polymerization of ketene acetals

This work has been divided into two sections: SECTION A (Chapters 1-5) This section is concerned with the preparation and cationic polymerization of various ketene acetals CH2 :C(OR1)OR2. Four ketene acetals have been synthesized (two of which are... Read More about The cationic polymerization of ketene acetals.

Researches into the function of metal halides in cationic polymerisation
Thesis
Grattan, D. W. (1973). Researches into the function of metal halides in cationic polymerisation

The work was concerned with the study of the ionisation of aluminium halides in alkyl halides, and the role of these solutions in cationic polymerisatlons. These are problems of long standing interest which became topical through the proposal of a ne... Read More about Researches into the function of metal halides in cationic polymerisation.

The fracture of filled epoxy resins
Thesis
Lilley, J. (1973). The fracture of filled epoxy resins

The useful structural materials are those that are both strong and tough. The "toughness" of a given material is characterised by its fracture energy which is refined as the total work expended in propagating the crack so as to produce unit area of n... Read More about The fracture of filled epoxy resins.

A study of the rearrangement products from isoxazolopyridinium salts
Thesis
Phipps, J. R. (1973). A study of the rearrangement products from isoxazolopyridinium salts

Brief treatment of tetrahydro-4-oxoisoxazolo [2,3-a] pyridinium bromide and its 3-methyl derivative with boiling acetic anhydride gave 4-acetyl-5,6-dihydro-4H-furo [3,2-b] pyrid-2-one and its 3-methyl counterpart. The structures of these rearrangem... Read More about A study of the rearrangement products from isoxazolopyridinium salts.

Synthesis and properties of thieno- and furo- tropones
Thesis
Robinson, M. J. (1973). Synthesis and properties of thieno- and furo- tropones

The synthesis of thieno[3,2-b]troponesand furo-[3,2-b]tropones by dehyrdrobromination of ?-dibromoketones using lithium carbonate in anhydrous N,N-dimethylformamide is investigated. Synthetic routes to furo[3,2-b]tropone and to three substituted thie... Read More about Synthesis and properties of thieno- and furo- tropones.

The construction and characteristics of an ammonia beam maser employing a fabry-perot cavity
Thesis
Sealy Smart, G. D. (1973). The construction and characteristics of an ammonia beam maser employing a fabry-perot cavity

The construction of an ammonia molecular beam maser employing an open resonator is described. The operation of this maser as an amplifier enables the effects of mode degeneracy in the resonator to be examined in a controlled manner. Its operation abo... Read More about The construction and characteristics of an ammonia beam maser employing a fabry-perot cavity.

Slow crack propagation in glass
Thesis
Weidmann, G. (1973). Slow crack propagation in glass

Slow crack propagation in glass is examined in a variety of environments using the double-torsion technique. The results are interpreted in terms of a limited plasticity fracture criterion and the time dependence of the yield stress.

Intramolecular nitrene insertions into aromatic systems
Thesis
Carde, R. N. (1974). Intramolecular nitrene insertions into aromatic systems

A study of the intramolecular insertion reactions of aryl nitrenes is described. In Part I the preparation and photolytic decomposition of a number of aryl azides in diethylamine is described. The usual products were 3H-azepines but in one case ring... Read More about Intramolecular nitrene insertions into aromatic systems.

Studies on the cationic polymerisation of some 1, 3-dioxacycloalkanes
Thesis
Firat, Y. (1974). Studies on the cationic polymerisation of some 1, 3-dioxacycloalkanes

This thesis concerns the polymerisation of 1,3-dioxacycloalkanes. Chapter 2 is concerned with the preparation of monomers, initiators and other compounds and with the experimental techniques. In Chapter 3 the effects of purity on the polymerisation... Read More about Studies on the cationic polymerisation of some 1, 3-dioxacycloalkanes.

Publications submitted for the degree of D.Sc.
Thesis
Jones, G. (1974). Publications submitted for the degree of D.Sc