

@mastersthesis {6270,
	title = {The desizing of woven cotton fabrics},
	year = {1996},
	note = {U482774},
	school = {University of Leeds (United Kingdom)},
	type = {phdPh.{D}.},
	address = {Ann Arbor},
	abstract = {In the cotton-based textile industry, many desizing methods have been developed to remove starch-based sizes from the warp yarns of woven cotton fabrics. However, in view of continuously tightening environmental regulations which have emerged in recent years in western Europe, two alternative approaches, namely, the use of alkali and/or plasma desizing are studied in the present work in an attempt to develop a more environmentally friendly desizing technique.A study of the desizing of starch-based size on woven cotton fabric has been carried out using different alkali metal hydroxides. From the evaluations on the \% fabric weight loss, the iodine staining properties with the TEGEWA violet scale and the starch removal rate of the treatments, it is found that both the pH of the treatment bath and the nature of the alkali used determine the effectiveness of the desizing treatment. In particular, increasing the alkali concentration (0.5 - 10 g/l), the treatment temperature (25 - 100{\textdegree}C), and the duration of the treatment (2 - 60 min.) increase the effectiveness of the alkaline desizing treatment. Although satisfactory desizing (TEGEWA violet scale rating {\textgreater} 5) could be attained using LiOH, NaOH and KOH under a variety of experimental conditions, overall NaOH is found to be the best desizing agent for woven cotton fabrics.In the study of oxygen plasma desizing of woven cotton fabric, it is found that the plasma treatment alone is insufficient to obtain an adequate desizing result. However, after the oxygen plasma treatment, the degraded starch molecules can be removed either by a hot alkali or a hot water after-wash. Under the experimental conditions, an oxygen plasma treatment followed by a hot alkali wash at 90{\textdegree}C for 2 minutes gives the best desizing results.},
	keywords = {(UMI)AAIU482774, 0994:Materials science, Applied sciences, Bibliographies, Materials science, Psychology{\textendash}Abstracting, Statistics},
	url = {http://search.proquest.com/docview/301509579?accountid=14270},
	author = {Au, C.K.A.}
}
