South African Wool and Textile Research Institute (SAWTRI) Collection
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The South African Wool and Textile Research Institute (SAWTRI) was established in Grahamstown in the early 1950's upon the inactive of the South African wool board. This followed the recommendation of Professor J.B Speakman (Professor of Textile Science at Leeds University) who was invited to study the possibility of organizing a wool research facility in South Africa to look after the textile research and development needs of both the wool procedure and growing wool and textile manufacturing industry of South Africa.
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Browsing South African Wool and Textile Research Institute (SAWTRI) Collection by Author "Barkenhuysen, FA"
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Item Bleaching of 55/45 wool/cotton blend fabrics. Part II: Using sodium chlorite and various reducing agents(1977-08) Barkenhuysen, FA; Leigh, RAThe bleaching of a 55/45 wool/cotton blended fabric with sodium chlorite and various reducing agents was investigated.Item Continuous dyeing using radio frequency energy Part V: Laboratory studies involving energy frequency and dye liquor conductivity(1986-04) Garner, E; Barkenhuysen, FAThe dyeing of cotton fabric with frequency (HF) energy was investigated and compared with conventional dyeing processes.Item Continuous dyeing using radio frequency energy. Part 1: Preliminary trials on wool(1981-06) Barkenhuysen, FA; Van Rensburg, NJJ; Turpie, DWFThe continuous dyeing of wool tops using a Fastran radio frequency (RF) dyeing machine was investigated.Item Continuous dyeing using radio frequency energy. Part VI (6): The effect of anode current and dyeing auxiliaries on the dyeing of wool(1986-05) Barkenhuysen, FA; Van Rensburg, NJJThe effect of RF generator anode current on the dyeing temperature and the effect of dyeing auxiliaries in the pad liquor on the dye fixation.Item Continuous dyeing using radio requency energy. Part VIII (8): RF dyeing of polyester(1987-05) Barkenhuysen, FA; Van Rensburg, NJJ; Harwood, RJThe radio frequency (RF) energy dyeing of different types of polyester fibres with various disperse dyes and carriers was investigated.Item The continuous shrinkresistant treatment of wool tops using chlorine gas in a conventional suction drum backwash(1983-09) Van Rensburg, NJJ; Barkenhuysen, FAWool tops were shrinkresistant successfully on a conventional suction drum back wash using chlorine gas dissolved in water.Item Liquid ammonia mercerisation of cotton. Part I: Construction of a pilot plant chainless merceriser(1975-12) Hanekom, EC; Barkenhuysen, FAThe construction of a pilot chain-less merceriser for the liquid ammonia treatment of fabrics is described.Item Liquid ammonia mercerisation of cotton. Part II: The influence of anhydrous liquid ammonia on the dimensional stability of cotton fabrics(1976-03) Barkenhuysen, FACotton fabrics of different structures and densities were treated with liquid ammonia.Item Liquid ammonia mercerisation of cotton. Part III: The influence of anhydrous liquid ammonia on the physical properties of cotton fabrics(1976-03) Barkenhuysen, FACertain physical properties of cotton fabrics were improved by a treatment with liquid ammonia. Although liquid ammonia mercerisation did not improve the breaking strength of the fabrics, it had a desirable effect on other properties such as extension, tear strength and flex abrasion.Item Liquid ammonia mercerisation of cotton. Part IV: Liquid ammonia mercerisation as a pretreatment for subsequent durable press treatments(1976-04) Barkenhuysen, FACotton fabrics of different construction and densities were pretreated with liquid ammonia before durable press finishing treatments.Item Liquid ammonia mercerisation of cotton. Part V: the influence of anhydrous liquid ammonia on certain chemical properties of cotton(1976-05) Barkenhuysen, FAIt was found that the fluidity of the cotton was not significantly affected by either liquid ammonia or sodium hydroxide mercerisation.Item Liquid ammonia mercerisation of cotton. Part VI liquid ammonia treatment of 50/50 cotton/polyester fabrics(1976-11) Barkenhuysen, FAThe effect of liquid ammonia on certain properties of 50/50 cotton/polyester blended fabrics was investigated.Item Liquid ammonia mercerisation of cotton. Part VII: Liquid ammonia treatment of 67/33 cotton/wool blended fabrics(1977-01) Barkenhuysen, FAThe effect of a liquid ammonia treatment on certain properties of 67/33 cotton/wool, all-cotton and all-wool fabrics was investigated.Item Radio frequency bleaching of cotton fabrics Part I: An introductory study(1984-12) Garner, E; Barkenhuysen, FAThe bleaching of cotton fabrics with radio frequency (RF) energy was investigated and compared with conventional pad-steam bleaching.Item Resin treatment of cotton fabrics in the slack state in liquid ammonia(1980-05) Barkenhuysen, FA; Van Rensburg, NJJLightweight and heavyweight cotton fabrics were treated in the slack state with a solution of DMHEU resin and NH4NO3 catalyst in liquid ammonia.Item Some chemical properties and the response to liquid ammonia and sodium hydroxide of various South African cotton cultivars(1982-10) Barkenhuysen, FA; Van Rensburg, NJJSome chemical properties of various South African cotton cultivars, and their response to mercerising treatments were determined.Item Some sorption and X-ray characteristics of cotton fibres treated in yarn form with anhydrous and aqueous liquid ammonia(1984-07) Barkenhuysen, FA; Van Rensburg, NJJThe modification of the structure of bleached cotton treated in yarn from with anhydrous liquid ammonia and liquid ammonia containing as much as 15% water was determined with the aid of iodine and moisture absorption tests, X-ray diffraction studies, and surface area determinations.Item Sorption and X-ray diffraction studies on cotton fabrics treated in anhydrous and aqueous liquid ammonia(1981-08) Barkenhuysen, FA; Van Rensburg, NJJThe effect of anhydrous and aqueous liquid as well as sodium hydroxide on the sorption of moisture, iodine and barium hydroxide by cotton was investigated.Item Stability of the chlorinating solution used in the SAWTRI chlorination process(1975-08) Hanekom, EC; Barkenhuysen, FARelatively stable concentrated DCCA solutions with a low pH value were obtained by using a mixture of an organic and an inorganic acid.