“… Fig. 9 Mechanism of the chitosan-cellulose- Curcuma longa reaction (this figure was adapted from Toprak-Cavdur et al 2022 ) …”
Section: Mordant Agentsmentioning
confidence: 99%
“…Dulo et al (2022), while investigating the coloring potential of the extracts obtained from the shells of peanut (Arachis hypogaea L.), cashew nut (Anacardium occidentale L.), coconut (Cocos nucifera L.), and macadamia nut (Macadamia integrifolia L.), used chitosan, alum, and ferrium sulfate as mordant agents. Toprak-Cavdur et al (2022) stated that dyeing recycled cotton fibers with natural dyes from Curcuma longa and Pterocarpus santalinus and bio-mordant chitosan. It is stated that according to the dye, different molecular weights of chitosan had varying effects on the color depth.…”
Due to the increasing pressure on environmentally friendly approaches and sustainable production processes, the textile dyeing industry has focused on natural colorants. Thus, the use of bio-mordants, which are biological materials, has become widespread as an alternative to metal salts, most of which are non-ecological, used in the application processes of natural colorants. In natural dyeing, dyers want to use mordant substances in the dyeing processes in order to both expand the color spectrum and improve the fastness properties. Conventional metal salts used in natural dyeing are made up of metallic ions, which, when released into the environment as wastewater effluent at the end of the dyeing process, cause major damage to the ecosystem. Many researchers have thought about using mordants derived from natural sources to address the environmental problem. This article is a review of the investigation of natural mordants used instead of metallic mordants in the process of coloring various textile materials with natural dyestuff sources. It has been determined that many substances, most of them herbal materials, are used as mordants. In this review, mordants, except for conventional metal salts, are examined under three main groups for a better understanding. These groups are as follows: (i) natural or bio-mordants, (ii) oil mordants, and (iii) new-generation and non-vegetable-based mordants. Here, researchers will find an overview of the most recent developments in green mordants as well as application techniques for a variety of mordants.
“… Fig. 9 Mechanism of the chitosan-cellulose- Curcuma longa reaction (this figure was adapted from Toprak-Cavdur et al 2022 ) …”
Section: Mordant Agentsmentioning
confidence: 99%
“…Dulo et al (2022), while investigating the coloring potential of the extracts obtained from the shells of peanut (Arachis hypogaea L.), cashew nut (Anacardium occidentale L.), coconut (Cocos nucifera L.), and macadamia nut (Macadamia integrifolia L.), used chitosan, alum, and ferrium sulfate as mordant agents. Toprak-Cavdur et al (2022) stated that dyeing recycled cotton fibers with natural dyes from Curcuma longa and Pterocarpus santalinus and bio-mordant chitosan. It is stated that according to the dye, different molecular weights of chitosan had varying effects on the color depth.…”
Due to the increasing pressure on environmentally friendly approaches and sustainable production processes, the textile dyeing industry has focused on natural colorants. Thus, the use of bio-mordants, which are biological materials, has become widespread as an alternative to metal salts, most of which are non-ecological, used in the application processes of natural colorants. In natural dyeing, dyers want to use mordant substances in the dyeing processes in order to both expand the color spectrum and improve the fastness properties. Conventional metal salts used in natural dyeing are made up of metallic ions, which, when released into the environment as wastewater effluent at the end of the dyeing process, cause major damage to the ecosystem. Many researchers have thought about using mordants derived from natural sources to address the environmental problem. This article is a review of the investigation of natural mordants used instead of metallic mordants in the process of coloring various textile materials with natural dyestuff sources. It has been determined that many substances, most of them herbal materials, are used as mordants. In this review, mordants, except for conventional metal salts, are examined under three main groups for a better understanding. These groups are as follows: (i) natural or bio-mordants, (ii) oil mordants, and (iii) new-generation and non-vegetable-based mordants. Here, researchers will find an overview of the most recent developments in green mordants as well as application techniques for a variety of mordants.
“…https://doi.org/10.31881/TLR.2024.099 Its ability to encapsulate and deliver substances has led to advancements in medical and pharmaceutical applications. Chitosan also finds applications in the textile industry, where it imparts antimicrobial and other biological activities to fibres and fabrics [18]. Chitosan, a naturally occurring polymer derived from chitin found in the shells of animals, has various medicinal uses.…”
Medicinal plant-based dyeing introduces vibrant colours alongside antibacterial and anti-odor properties, fostering sustainability. Innovations include mass sampling for consistent pigment production. Furthermore, lotus seedpods, rich in bioactive compounds, exhibit potential in diverse fields. Chitosan, a biopolymer derived from chitin, boasts versatility in drug delivery systems, wound healing, and antimicrobial applications. This experimental inquiry delves into the dyeability and antimicrobial efficacy of cotton fabric subjected to treatment with chitosan and dyed using Lotus seeds. The investigation encompasses varied parameters such as dye concentration, duration, and temperature for fabric dyeing. The study elucidates the aqueous extraction methodology for dye from Lotus seeds, the chitosan-based mordanting techniques. Standardized assessments are utilized to gauge colour fastness characteristics, encompassing washing, rubbing, and perspiration fastness, along with assessing the antimicrobial attributes of the treated cotton fabric. The study indicates that the application of chitosan-treated cotton fabric enhances dye intensity and overall dyeing quality, consequently improving the colour fastness property of washing, rubbing, and perspiration. Additionally, the treated cotton fabric exhibits significant antimicrobial activity against common bacteria, highlighting the potential of Lotus seed-derived colourants and chitosan mordant in the development of sustainable and antimicrobial textiles. The future scope lies in optimizing the integration of Lotus seed-derived colourants and chitosan mordant for enhanced sustainability and antimicrobial efficacy in textile applications, leveraging advancements in dyeing technology and antimicrobial formulation techniques.
“…Extended research had been performed towards bio-mordants. Bio-mordants as citcric acid [7] or chitosan [8] algorithm prediction [5], they cause potential pollution and wastewater issues [6]. Extended research had been performed towards bio-mordants.…”
Section: Introductionmentioning
confidence: 99%
“…Chitosan has been used as a bio-mordant for natural fibres, such as wool dyed with cochineal [8], turmeric and madder [12], cellulosic ones (such as linen [13,14] or cotton [15,16]), or even synthetic fibres, such as polyamide [17]. Chitosan has been used as a biomordant, in order to improve the colour fastness properties from natural dyes.…”
Natural dyes, obtained from plants, insects/animals, and minerals, are renewable and sustainable bioresource products with minimum environmental impact. However, there are still many issues to solve related to natural dyes; consequently, synthetic dyes are still wildly used. Natural dyes have a low affinity towards the substrate cotton, so a solution had to be found: mordants. Mordants can also be harmful to the environment, which is why bio-mordants are used. The mordant used in this paper is chitosan. Cotton is pre-mordanted using the pad dyeing method. By using the exhaustion method, the fabric was coloured with red Camellia sinensis (tea) extracts. The colour, absorption of polyphenols and tannins, and ultraviolet protection (UPF) were tested. A comparison study was carried out between the cotton fabric and the cotton padded with chitosan at two different concentrations. The results are impressive. Cotton pre-mordanted with chitosan can absorb more polyphenols and tannins than cotton itself, and the colour fastness and UPF, once the fabric is laundered, demonstrate there is some kind of bonding between the fibre, quitosan, and active compounds from tea. The UPF was also doubled by using chitosan and the reddish colour obtained by Camellia sinensis extracts were darker on the cotton fabric. The increase in UPF protection on mordanted fabrics is higher than the gap obtained by colour difference, which means there are active compounds that do not confer colour, but enhance UPF protection.
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