Pad ultrasonic batch dyeing of causticized lyocell fabric with reactive dyes

Aijaz Ahmed Babar; Mazhar Hussain Peerzada; Abdul Khalique Jhatial; Noor-Ul-Ain Bughio

doi:10.1016/j.ultsonch.2016.07.018

Pad ultrasonic batch dyeing of causticized lyocell fabric with reactive dyes

Ultrason Sonochem. 2017 Jan:34:993-999. doi: 10.1016/j.ultsonch.2016.07.018. Epub 2016 Jul 25.

Authors

Aijaz Ahmed Babar¹, Mazhar Hussain Peerzada², Abdul Khalique Jhatial³, Noor-Ul-Ain Bughio⁴

Affiliations

¹ Department of Textile Engineering, Mehran University of Engineering and Technology, Jamshoro 76060, Pakistan. Electronic address: aijaz@admin.muet.edu.pk.
² Department of Textile Engineering, Mehran University of Engineering and Technology, Jamshoro 76060, Pakistan. Electronic address: Mazhar.peerzada@faculty.muet.edu.pk.
³ Department of Textile Engineering, Mehran University of Engineering and Technology, Jamshoro 76060, Pakistan.
⁴ Department of Textile Engineering, Mehran University of Engineering and Technology, Jamshoro 76060, Pakistan. Electronic address: Noor06te29@gmail.com.

PMID: 27773332
DOI: 10.1016/j.ultsonch.2016.07.018

Abstract

Conventionally, cellulosic fabric dyed with reactive dyes requires significant amount of salt. However, the dyeing of a solvent spun regenerated cellulosic fiber is a critical process. This paper presents the dyeing results of lyocell fabrics dyed with conventional pad batch (CPB) and pad ultrasonic batch (PUB) processes. The dyeing of lyocell fabrics was carried out with two commercial dyes namely Drimarine Blue CL-BR and Ramazol Blue RGB. Dyeing parameters including concentration of sodium hydroxide, sodium carbonate and dwell time were compared for the two processes. The outcomes show that PUB dyed samples offered reasonably higher color yield and dye fixation than CPB dyed samples. A remarkable reduction of 12h in batching time, 18ml/l in NaOH and 05g/l in Na₂CO₃ quantity was observed for PUB processed samples producing similar results compared to CPB process, making PUB a more economical, productive and an environment friendly process. Color fastness examination witnessed identical results for both PUB and CPB methods. No significant change in surface morphology of PUB processed samples was observed through scanning electron microscope (SEM) analysis.

Keywords: CPB process; Color yield; Dye fixation; Lyocell; PUB process; Reactive dyes.