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Combined Pre-treatment and Causticization of cotton fabric for improved dye uptake
University of Borås, Faculty of Textiles, Engineering and Business. (Textile Materials Technology)ORCID iD: 0000-0002-5301-740X
University of Borås, Faculty of Textiles, Engineering and Business. (Textile Materials Technology)ORCID iD: 0000-0002-4369-9304
2017 (English)In: Advance Research in Textile Engineering, ISSN 2572-9373, Vol. 2, no 1, article id 1016Article in journal (Refereed) Published
Sustainable development
The content falls within the scope of Sustainable Development
Abstract [en]

Conventionally, cotton fabric is subjected to a series of separate pretreatment processes such as desizing, scouring, and bleaching to remove natural and added impurities for satisfactory dyeing and finishing. When the sole purpose is to improve the dye uptake, cotton fabric is subjected to yet another separate process called causticization, a treatment of cotton fabric at reduced concentration of caustic soda (110-150 g/L) compared to mercerization. All these processes i.e. desizing, scouring, and bleaching are lengthy and require large amount of water, energy, chemicals, and time which lead to increase in cost and productivity loss.

In this paper, a combined desizing, scouring, bleaching and causticization process with shorter processing time is reported. Single factor randomized experimental design was used for process optimization. Based on experiments, the optimum recipe consisted of padding the gray cotton fabric using a twodip, two-nip technique in a bath containing NaOH 140g/L; Sodium Per Borate (SPB) 40-45g/L; wetting agent 1g/L, batching for 30 min at room temperature and washing the treated fabric with 1g/L emulsifier twice for 15 minutes each at boil with 3% owf SPB added during the second wash, rinsed with hot and cold water and air dried.

The results showed excellent wettability, good degree of whiteness, minimum loss of tensile strength and higher dye uptake compared to uncausticized commercially bleached cotton fabric.

Place, publisher, year, edition, pages
USA: Austin Publishing Group , 2017. Vol. 2, no 1, article id 1016
Keywords [en]
Causticization, Sodium perborate, Dye uptake, Cold-pad-batch, Whiteness index
National Category
Textile, Rubber and Polymeric Materials
Research subject
Textiles and Fashion (General)
Identifiers
URN: urn:nbn:se:hb:diva-12496OAI: oai:DiVA.org:hb-12496DiVA, id: diva2:1136086
Available from: 2017-08-25 Created: 2017-08-25 Last updated: 2017-10-24Bibliographically approved

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Tadesse Abate, MollaNierstrasz, Vincent

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CiteExportLink to record
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