Stress relaxation experiments have been carried out on single filaments of nylon, viscose rayon and acetate rayon over the temperature range 0°C. to -80°C. Similar experiments were also performed on viscose rayon yarns immersed in water at 35°C. In these latter experiments, a marked change in the shape of the stress relaxation curve was noted as the strain was decreased. At strains of the order of 0.05% the relaxation curve had the shape characteristic of a single Newtonian Maxwell element, while the curve obtained at higher elongations could not be explained in terms of a single such element. It was concluded that the flow process involved was non-Newtonian in character. The low temperature results, as well as those obtained previously by Price (20) are discussed In terms of Eyring's hyperbolic tangent equation for describing stress relaxation. / Science, Faculty of / Chemistry, Department of / Graduate
| Identifer | oai:union.ndltd.org:UBC/oai:circle.library.ubc.ca:2429/40558 |
| Date | January 1956 |
| Creators | Rye, Robin Tilley Brooke |
| Publisher | University of British Columbia |
| Source Sets | University of British Columbia |
| Language | English |
| Detected Language | English |
| Type | Text, Thesis/Dissertation |
| Rights | For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use. |
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