- About
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The Global ETD Search service is a free service for researchers
to find electronic theses and dissertations. This service is
provided by the
Networked Digital Library of Theses and Dissertations.
Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
Search results
Showing 11 to 20 of 517 (0.015 seconds)| 11 |
Automatic visual inspection of laceYazdi, H. R. January 1999 (has links)
No description available.
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Surface modification of wool by novel 'dry' finishing to impart shrink resistance,improved dyeability and printabilityShao, Jianzhong January 1998 (has links)
This project involved studying the surface modification of wool by novel "dry" finishing to impart shrink resistance, improved dyeability and printability. Two "dry" treatments, gaseous fluorination and UV/ozone treatment, were evaluated. Fluorination is a powerful, surface sensitive oxidation treatment which imparts wettability to wool and improves the shrink resistance, dyeability and printability of wool. In combination with polymer treatment, fully washable wool is produced. UV/ozone treatment is a photosensitised oxidation treatment. This treatment also imparts benefits to wool in terms of shrink resistance, dyeability, and printability; in particular, improved low temperature dyeing of wool with reactive dyes can be achieved. Subsequent sulphite treatment further improves the shrink resistance by nucleophilic C-S fission. An optimised UV/ozonelbleaching process was developed for wool printing preparation. X-ray Photoelectron Spectroscopy (XPS) and Static Secondary Ion Mass Spectrometry (SSIMS) were used to probe the surface nature of wool. It was revealed that the major lipid component in the outermost wool surface, C21 fatty acid (I8-MEA), is sensitive to chemical attack and is almost entirely removed/modified by the fluorination and UV/ozone treatment. It was also found that oxidation of cystine disulphide bonds occurs. FT-IR and FT-Raman analyses indicate that the major oxidation product of cystine in both treatments is cysteic acid, with the UV/ozone treatment producing significantly more intermediate cystine oxidation products in wool. SEM analysis shows that both treatments cause little physical damage to the wool scale structure, while FT-Raman and DSC studies indicate that there are no significant changes in the a-helix structure of the fluorinated or UV/ozone treated wool. ESR analysis shows that UV/ozone treatment produces significant amountsof thiol free radicals which on wetting are converted to thiol anions. Both fluorination and UV/ozone treatment are simple, dry processes, with low or zero- AOX.
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Biochemical improvement of flax-based materialsChigaeva, Irina V. January 2001 (has links)
No description available.
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The effects of laundering on polyester microfibresPeel, Nicola Elaine January 2001 (has links)
No description available.
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A detailed investigation into the production of calcium alginate fibre from various algal sourcesAhmed, Tanveer January 1994 (has links)
No description available.
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Fabric integrity evaluation of structural materials using infrared thermographyHu, Ching Wen January 2002 (has links)
No description available.
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The initiation, development and effects of rotor deposits in open-end spinningAbadeer, E. F. January 1979 (has links)
No description available.
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A study of the frictional properties of textile fabricsEl Gaiar, M. N. January 1975 (has links)
No description available.
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The numerical analysis of pneumatic structural formsRiches, Colin January 2001 (has links)
No description available.
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The chemistry of bleachingPatell, Yasmin January 1996 (has links)
No description available.
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