Development of dual-phase reactive dyeing process for cotton

Name: Kattika Seemork

LCSH: Kasetsart University -- Theses. M.S. (Textile Industrial Technology and Merchandising) 2022

Classification :.LCCS: TP918.R43

LCSH: Kasetsart University. -- Department of Textile Science -- Theses

LCSH: Reactive dyes

LCSH: Dyes and dyeing

LCSH: Cotton

LCSH: Palm oil

Abstract: In this study, the oil/water dual-phase dyeing system for developing a salt-free reactive dyeing process for cotton was established. Vegetable and synthetic oils, that were palm oil and liquid paraffin, respectively, were used as an oil phase for dual-phase dyeing study. Warm- and hot-dyeing reactive dyes were chosen for this study, viz. Remazol (Red RR gran and Navy RGB gran 150%) and Procion (Red H-E3B and Navy H-ER 150%) dyes, respectively. A dual-phase dyeing system was conducted under varying oil:water ratios and a comparative study was performed on the conventional aqueous-based reactive dyeing in the presence and absence of salt. The result displayed that the optimum oil:water ratio for dual-phase dyeing was 3:1, with superior color yields (K/S values) to the conventional aqueous-based dyeing. Furthermore, the liquid paraffin/water medium from the dual-phase dyeing system resulted in a slightly higher color yield than a palm oil/water medium. The exhaustion behaviors in both aqueous-based and dualphase dyeing systems were observed in the presence and absence of alkali (alkaline and neutral exhaustions, respectively). In case of salt-free, dual-phase dyeing system without alkali addition, the oils were not capable of inducing dye exhaustion. Whilst, significant dye exhaustion was enhanced by salt addition in conventional aqueous dyebath. Nevertheless, the efficacy of dye uptake could be significantly improved by incorporating alkali into the dyebath for oil/water dualphase systems. For a study on build-up properties, it was found that the dyes showed better build-up profiles in the oil/water dual-phase dyeing as compared with those obtained from the conventional aqueous-dyeing process. However, poor levelness was observed for pale-shade dyeing (0.5%owf) in the dual-phase dyeing process. A study for dye levelness improvement in liquid paraffin/water dual-phase system was conducted by prewetting methods. The obtained result manifested a better levelling property. The color fastnesses to washing and rubbing of the dyed fabrics from the dual-phase process were superior to the conventional aqueous dyeing. A preliminary study on reusability of both palm oil and liquid paraffin from the spent dyebath for dual-phase dyeing was also conducted without any further purification and the obtained results indicated a potential of reusing these oils for reactive dyeing.

Kasetsart University. Office of the University Library

Address: Bangkok

Email: tdckulib@ku.ac.th

Name: Jantip Setthayanond

Role: Thesis Advisor

Name: Potjanart Suwanruji

Role: Thesis CO-Advisor

Created: 2022

Modified: 2025-07-20

Issued: 2025-07-20

วิทยานิพนธ์/Thesis

application/pdf

URL: https://www.lib.ku.ac.th/KUthesis/2565/kattika-see-all.pdf

CallNumber: TP918.R43 .K38

eng

DegreeName: Master of Science

Level: Master's Degree

Descipline: Textile Industrial Technology and Merchandising

Grantor: Kasetsart University

©copyrights Kasetsart University

ลำดับที่.	ชื่อแฟ้มข้อมูล	ขนาดแฟ้มข้อมูล	จำนวนเข้าถึง	วัน-เวลาเข้าถึงล่าสุด
1	kattika-see-all.pdf	2.43 MB

ใช้เวลา

0.021065 วินาที