Abstract
Abstract This research aims to study woven fabric construction with natural indigo dyeing with finishing for home textile applications. The physical and mechanical properties, including color fastness tests, of these woven fabrics according to ISO standards for home textiles exported to the European Union were characterized. Tensile strength, tear strength, and pilling resistance of these woven fabrics were appropriate to design, and had enough strength for bed linens, duvet covers, and pillowcases. The color fastness to washing, water, and light of these woven fabrics passed the requirements for bed linens and pillowcases, except for color fastness to wet rubbing, due to the low performance of natural dyestuff. Thus, a finishing technique of water repellency was applied to improve these properties. This design of natural fiber fabrics dyed with natural indigo was developed for home textile products whose fabrics were produced by community enterprise. These home textile products can be used as a collection prototype for a spa room in a hotel.
Highlights
Handwoven fabric dyed with natural indigo dye is distinctive of Sakon Nakhon of Thailand, a principal location for cultivation of natural indigo
This results in a better penetration and more consistency of dyestuff in the fabric, and is able to reduce the time required for indigo dyeing
According to the ISO standards test of home textile products of the European Union [13] for pillowcase and upholstery fabrics, it is set that fabric construction should have tensile strength greater than 180 N and tear strength greater than 1000 cN, for both weft and warp direction
Summary
Handwoven fabric dyed with natural indigo dye is distinctive of Sakon Nakhon of Thailand, a principal location for cultivation of natural indigo. The natural indigo dyeing processes at the community level are the vat dyeing method (mixing indigo paste with NaOH solution), and later soaking the yarn in the indigo vat This method has the problem of penetration of indigo into the yarn fibers, which may cause the dye color to be uneven. Sodium hydrosulfite (Na2S2O4) is a reducing agent with sodium hydroxide (NaOH) solution, and adjusts the pH towards the alkaline region of 2 This enables leuco indigo to more effectively penetrate into the fibers [1]. Mongkholrattanasit et al [2] modified the natural indigo dyeing method using the indigo vat to the dyeing process of indigo white, which uses reducing agents This results in a better penetration and more consistency of dyestuff in the fabric, and is able to reduce the time required for indigo dyeing. This technique will enable small and medium enterprises (SMEs) to be able to perform the indigo dyeing process in mass production
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