Alternative microwave curing approach for imparting ease and care characteristics and antimicrobial activity to viscose fabric

Abstract

Purpose This study aims to use multi-functional viscose fabric that was facilely developed with with respect to ease and care characteristics, reinforcement effect and antibacterial activity by using novel echo friendly antibacterial finish based on citric acid/sodium hypophosphite and the authors’ previously tailor-made poly meth acrylic acid (MAA)-chitosan graft copolymer via alternative microwave curing approach instead of traditional high-temperature cure one. Design/methodology/approach Viscose fabric was paddled twice in the cross-linking formulations containing different concentrations of citric acid, poly (MAA)-chitosan graft copolymer and sodium hypophosphite to 90 % wet pick up and dried at 100°C for 3 min in an electric oven. Then, the treated fabrics were placed on the disk spinner of the microwave oven and cured at different power (100–800 Watt) for various durations (60–180 s). The fabric was then water-rinsed and dried at ambient condition before use. Findings Results revealed that the above echo friendly method for finished viscose fabrics was found to achieve relatively high dry wrinkle recovery angle and maintain the loss in tensile strength within the acceptable range, as well as antibacterial activity against Escherichia coli and Staphylococcus aureus as a gram-negative and gram-positive bacteria, respectively; in addition to durability up to ten washing cycles. Furthermore, scanning electron microscope images, nitrogen content and add on % of the finished fabric confirmed the penetration of grafted chitosan inside the fabric structure. The tentative mechanism for these reactions is advocated. Originality/value The novelty addressed here is undertaken with the advantages of using citric acid as a nonformaldehyde, safe and cheap poly carboxylic acid as a crosslinking agent and sodium hypophosphite as a potential catalyst, in addition to the authors’ noncitable multifunctional echo friendly tailor-made poly (MAA)-chitosan graft copolymer for imparting reinforcement and antibacterial characteristics to viscose fabric that uses the pad-dry/cure microwave fixation for progressively persuaded heat within the fabric during curing. Research limitations/implications This was done to see the impact of microwave as green and efficient tool with respect to reduction in organic solvents, chemicals and exposer time as well as fixation temperature on the finishing reaction in comparison with traditional pad-dry-cure method. Practical implications Poly (MAA)-chitosan graft copolymer as amphoteric biopolymer was expected to impart multifunctional properties to viscose fabrics especially with comparable dry wrinkle recovery angle and minimize the loss in tensile strength in addition to antibacterial properties in comparison with untreated one.

Rendering viscose fabric dye-able with anionic dyes using plasma treatment technique and chitosan nanoparticles as an eco-friendly approach

“…2.9 Add on % Add on % of the samples treated in presence of CNPs and the aforementioned dyes were estimated according to the reported method (Mostafa and El-Sanabary, 2021).…”

“…Such modification is used to designate a thoughtful change in composition, surface chemistry, wettability or structure leading to an improvement in different types of fiber properties. In this regard, different approaches for the modification of fibrous and non-fibrous textiles comprising crosslinking (Mostafa and Ameen, 2020; Mostafa and El-Sanabary, 2020, 2021), grafting (Mostafa et al , 2010a, 2010b; Amara et al , 2019), aminolysis (Brinker and Scherer, 1990), sol gel (Schramm and Rinderer, 2011; Yin et al , 2008), cationization (Ben Ticha et al , 2017), ionization radiation (Chan, 1994), UV and gamma radiation (Kim and Jang, 2010), UV/ozone irradiation (Kim and Bae, 2009), electron beam irradiation (Yip, 2002), UV excimer laser (Bide et al , 2006) and plasma treatment (Shishoo, 2006; Oktem, 2000; Peter, 1997; Javed, 2008; Haji, 2016, 2017) have been deliberated, and their effects on the dye ability of different textiles have been explored. Plasma is the fourth state of matter in which a substantial part of molecules is dissociated and ionized via electromagnetic fields.…”

A clinical perspective of chitosan nanoparticles for infectious disease management

“…Moreover, the antibacterial property of coating nanomaterials on fabrics is being well-studied by many groups. [ 3 , 6 , 7 ]. Quantum dot (QD) technology for LED smartphones and screens relies on nanotechnology to enhance its performance (QDs show precise color production and high resolution).…”

Nano TiO2/amino-benzotriazole functionalization of cotton knitted fabrics for ultraviolet protection and antibacteria by pad-dry method

“…[1][2][3][4] The combination of some special finishing agents can make the textile obtain two or more specific functions at the same time, which is valuable for multifield applications. [5][6][7][8] Cotton fabric has good hydrophilicity and air permeability, meanwhile it has the advantage of flexibility and comfort. [9][10][11] However, bacteria breed easily on cotton fiber, the fabric has the shortcomings of poor ultraviolet resistance, poor antibacterial properties, etc.…”

“…1–4 The combination of some special finishing agents can make the textile obtain two or more specific functions at the same time, which is valuable for multifield applications. 5–8…”