Enhanced anti-microbial, anti-creasing and dye absorption properties of cotton fabric treated with Chitosan–Cyanuric Chloride hybrid (original) (raw)
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Multifunctional properties of cotton fabric treated with chitosan and carboxymethyl chitosan
Carbohydrate Polymers, 2007
A water soluble carboxymethyl derivative of chitosan was prepared with a view to develop a multifunctional finish on cotton. Results show that treated cotton has better dyeability with direct and reactive dyes. Treatment with modified chitosan makes it possible to dye cotton in bright shades with cationic dyes having high wash fastness. Treated samples showed good antimicrobial activity against Escherichia coli and Staphylococcus aureus at 0.1% concentration as well as improved wrinkle recovery. The effect was found to be durable for five laundering cycles.
In this study, the effect of low pressure oxygen plasma treatment and subsequent chitosan treatment on the dyeability of cotton and wool fabrics is investigated. Raw, plasma treated and chitosan coated wool and cotton samples were dyed with natural dye extracted from dried cotton pods. The effect of each modification on the color strength of the dyed samples was examined and the order of the K/S for both fibers was as follows: chitosan treated > plasma treated > raw. The samples were also tested for antibacterial properties before dyeing. The samples coated with chitosan after plasma treatment showed excellent antibacterial activity.
C hitosan citrate has bee n eva luated as no n-formaldehyde durab le press fini sh to produce wrinkl e-resista nce and antimi crobial prope rti es fo r colton fabrics. The carboxy li c g ro ups in the chitosan citrate structure were used as acti ve sites fo r its fixation o nto cotto n fabric s. The fixatio n o f the chitosan c itrate o n the colto n fabr ic was do ne by rhe padding of chitosa n citrate solution o nto colto n fabrics followed by dry-cure process. The facto rs affecting the fi xati on processes were sys tematicall y studi ed. The antimi crobia l ac ti vity and the performance properties o f the treated fabric s, inc luding tensil e strength , wrinkle recovery, was h fa stness and whiteness index , were eva lu ated. The fi ni shed fabri c shows adequa te wrinkle resistance, sufficient whiteness, hi g h tensile stre ngth and mo re reduction rate of bacteria as compared to untreated cotton fabric .
The Chitosan Implementation into Cotton and Polyester/Cotton Blend Fabrics
Materials
Chitosan is an environmentally friendly agent that is used to achieve the antimicrobial properties of textiles. Nowadays, the binding of chitosan to the textiles has been thoroughly researched due to the increasing demands on the stability of achieved properties during the textile care processes. Most crosslinking agents for chitosan are not safe for humans or environment, such as glutaric aldehyde (GA) and formaldehyde derivatives. Eco-friendly polycarboxyilic acids (PCAs) are usually used in after-treatment. In this work, chitosan powder was dissolved in citric acid with sodium hydrophosphite (SHP) as a catalyst. Standard cotton (CO) and polyester/cotton (PES/CO) fabrics were pretreated in 20% NaOH, similar to mercerization, in order to open the structure of the cotton fibers and hydrolyze polyester fibers, continued by finishing in the gelatin chitosan bath. Afterwards, the hot rinsing process, followed by drying and curing, closed the achieved structure. The main objective was t...
Treatment of Cotton with Chitosan and Its Effect on Dyeability with Reactive Dyes
D yeing behaviour of chitosan pretreated cotton fabric with reactive dyes is the subject of this study. Cotton fabric is treated with chitosan using five different techniques, consisting of exhaustion, pad-dry, pad-batch, pad-steam and pad-drysteam methods. To find the influence of concentration of chitosan on the dyeability behaviour, different amounts of chitosan were used and the suitable concentration was determined. It is observed that chitosan pretreatment increases the exhaustion of reactive dyes and the highest dye up-take is achieved for pad-dry method. The effect of the period of storage of chitosan treated sample before dyeing process on dyeability of fabrics is examined by comparison of samples which was dyed immediately after treatment with the one which was kept for 48 h after treatment. The results show that dyeing immediately after treatment leads to higher dyeability and the effect of treatment decreases for the samples which were pkept for 48 h before dyeing process. The light and wash fastnesses of treated samples are measured and some reduction in light and wash fastnesses were observed.
Use of Chitosan as Antimicrobial, Antiviral and Antipollution Agent in Textile Finishing
Fibres and Textiles, 2022
With the industrial developments in recent times, the textile industry also needs sustainable and environmental-friendly resources. Today's world has been overburdened with the use of synthetic or hazardous materials in day-today life. Chitosan polymer obtained from chitin deacetylation, having a lot of properties beneficial to mankind without being hazardous to environment and humans is currently gaining popularity for research and development all over the globe. Antimicrobial and antiviral textile finishing with the help of chitosan is a new trend in the textile field. Also, chitosan having good adsorption properties finds its application in textile effluent treatments. This review reports and discusses multifunctional finishing and dyeing of textiles with chitosan and highlights its application for textile wastewater treatment.
Study of Chemical Treated Cotton Fabric for functional Finishes using Chitosan
Cotton fabrics were treated with sodium hydroxide, morpholine and cellulase enzyme. These treated cotton fabrics were applied by chitosan followed by dyeing with some selected dyes such as annatto, onion, pomegranate, indigo, myrobalan, bar berry (natural dyes); and reactive and Sulphur dyes (synthetic) respectively. These treated samples were tested for different functional properties such as, wicking, water vapor & air permeability, K/S value, fastness properties, antimicrobial property, and SEM analysis. Results show that chitosan treatment imparts functional properties on cotton fabrics. Among all the treated fabrics, sodium hydroxide treated cotton fabric revealed higher values.
Treatment of Acrylic Fabric and Its Wool Blend with Chitosan to Impart Antimicrobial Activity
crylic fabrics are treated with different concentrations of chitosan (0.1 – 0.5% o.w.f) at different temperatures (130 o C-170 o C) in presence or absence of copper sulphate. The effect of treatment on some properties of the treated acrylic fabrics such as moisture regain, roughness, bending stiffness, tensile strength and elongation % are investigated. Colour intensity of the dyed samples by both cationic and acid dyestuffs, as well as their fastness properties (washing and perspiration) is studied. Characterization of the untreated and treated fabrics by infrared spectroscopy (FTIR), thermogravimetric (TGA) and differential thermal analysis (DTA) are given. Measurement of antibacterial activity is also carried out.
Carbohydrate Polymers, 2012
The purpose of this work was to develop a textile finish based on radical UV-curing of chitosan on cotton and silk to confer antimicrobial properties. Fabrics were impregnated with a solution of 2% w chitosan in aqueous acetic acid (2% v/v) added of 2-hydroxy-2-methylphenylpropane-1-one (2% w/w with respect to chitosan) as photoinitiator and cured at room temperature by exposure to UV lamp for 60 s on both the sides. The antimicrobial activity of finished fabrics was tested according to ASTM standard test performed with Escherichia coli. Obtained results showed a strong antimicrobial activity conferred by the treatment, homogeneous on fabric surface, without affecting the hand properties of fabrics due to the low chitosan weight on (about 2%). The treatment durability to domestic laundering was tested after 5 cycles using either anionic or nonionic detergents. The antimicrobial activity resulted completely maintained after washing with a nonionic surfactant, while with anionic detergents the treatment durability was better for samples prepared with a deeper penetration of chitosan inside the fibers. The fabrics were characterized by dyeing tests, SEM and FTIR-ATR analyzes.