PLA/cotton/PTT core-spun yarn knit fabric dyeing at low temperature and one bath - 华强电子网

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PLA/cotton/PTT core-spun yarn knit fabric dyeing at low temperature and one bath

Key words: ultraviolet spectrophotometer; US instrumentation ; UV-1100; UV-1200

Src="http://i.bosscdn.com/blog/nophoto.gif" /></p> This study explores an energy-efficient and environmentally friendly low-temperature one-bath dyeing process for PLA/cotton/PTT3 core-spun yarn knit fabrics. The objective is to reduce the processing cost and improve production efficiency by eliminating the need for a two-bath method. PLA fibers are not alkali-resistant, so reactive dyes such as Argazol N series were chosen to fix cotton components under neutral conditions. Medium-temperature disperse dyes were used for dyeing PLA and PTT components. A diffusing agent, NNO, was added at 2.5g/L to prevent staining during the process. By optimizing the use of carrier CWP-910 and adjusting the dyeing temperature to 90°C, it was possible to achieve a high dye uptake rate with a short dyeing time of 30 minutes. This ensures good color homogeneity between PLA and PTT components. Polylactic acid (PLA) fiber is derived from corn starch and is known for its biodegradability and eco-friendly properties. However, it is sensitive to moisture, heat, and alkaline conditions, which can cause degradation. Therefore, careful control of the dyeing process is essential to maintain fiber integrity and performance. PTT fiber combines the softness of nylon, the bulkiness of acrylic, and the elasticity of polyester. When combined with PLA and cotton in a core-spun yarn, the resulting fabric offers improved comfort, shape retention, and durability. Traditional two-bath methods involve separate dyeing processes for each component, leading to longer processing times and higher energy consumption. The new low-temperature one-bath method simplifies the process, reduces energy use, and preserves the original properties of the fabric. Experimental results showed that the optimal concentration of CWP-910 was 3g/L, and the best dyeing time was 30 minutes. The K/S value reached 1.8224, indicating good dyeing depth and color uniformity. This research provides a sustainable and efficient alternative for dyeing multi-component fabrics, meeting the growing demand for eco-friendly textile production. Keywords: ultraviolet spectrophotometer; US instrumentation; UV-1100; UV-1200 </p> </dl> <!--centered, 52 pixels wide, 1 height, horizontal dividing line-- > <hr width=

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