Valorization of Juglans regia. L Bark Residues as a Natural Colorant Based on Response Surface Methodology: A Challenging Approach to a Sustainable Dyeing Process for Acrylic Fabrics

Manel Ben Ticha, Nourhene Slama, Nedra Dhouibi, Chedly Boudokhane and Hatem Dhaouadi
Additional contact information
Manel Ben Ticha: Department of Early Childhood, University College of Turabah, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
Nourhene Slama: Department of Chemistry, Faculty of Sciences of Monastir, Research Laboratory—Environmental Chemistry and Clean Processes (LR21ES04), University of Monastir, Monastir 5000, Tunisia
Nedra Dhouibi: Department of Chemistry, Faculty of Sciences of Monastir, Research Laboratory—Environmental Chemistry and Clean Processes (LR21ES04), University of Monastir, Monastir 5000, Tunisia
Chedly Boudokhane: Department of Chemistry, Faculty of Sciences of Monastir, Research Laboratory—Environmental Chemistry and Clean Processes (LR21ES04), University of Monastir, Monastir 5000, Tunisia
Hatem Dhaouadi: Department of Chemistry, Faculty of Sciences of Monastir, Research Laboratory—Environmental Chemistry and Clean Processes (LR21ES04), University of Monastir, Monastir 5000, Tunisia

Sustainability, 2022, vol. 14, issue 7, 1-11

Abstract: The dyeing industry is considered one of the most polluting industries. Thus, several researchers have focused on studying the possibilities of natural textile dyeing. The objective of this paper was to optimize the microwave extraction process for Juglans regia bark residues in order to dye acrylic fabrics. Hence, at first, the following extraction conditions were studied: microwave power, pH, extraction duration and concentration of dry mass. Flavonoid and tannin content was measured each time. Moreover, the obtained extracts were used for dyeing acrylic fibers with microwave assistance, and the corresponding color yield (K/S) was measured. Then, the microwave extraction process already developed was optimized; a response surface design was established using Minitab 19 software. The optimal extraction conditions were found to be: microwave power = 850, pH = 3 and extraction time = 4 min. Finally, dyed and undyed acrylic were characterized by infrared (FTIR) spectroscopy in order to distinguish the effect of this natural dye on the external layer of the acrylic fiber.

Keywords: sustainable process; natural dyeing; process optimization (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2022
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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