The Experts below are selected from a list of 5238 Experts worldwide ranked by ideXlab platform
Javed Sheikh - One of the best experts on this subject based on the ideXlab platform.
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an eco friendly route to develop cellulose based multifunctional Finished linen Fabric using zno nps and cs network
Journal of Industrial and Engineering Chemistry, 2021Co-Authors: Mukul Gupta, Javed Sheikh, Ankit SinghAbstract:Abstract The study aims to develop a multifunctional Finished linen Fabric by using an environment-benign, green and sustainable route. The cellulose-based linen Fabric has been functionally modified by amino polysaccharide (chitosan, CS), zinc oxide nanoparticles (ZnO NPs), and flower extract of medicinal plant, Bombax ceiba. The NPs were stabilized by the extract on chitosan polymeric layer, which was bound on the Fabric through citric acid. Thus, developed Finished Fabric, at three different pH values, was examined for bending length, tensile strength, crease recovery, UV-protection, antibacterial, and antioxidant activity. The embedded ZnO NPs have been confirmed through FT-IR, Energy dispersive X-Ray spectroscopy (EDX), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The results showed effective crease recovery angle (CRA) and hiked UV protection factor (UPR) with splendid percent antibacterial activity against Escherichia coli and Staphylococcus aureus (>90%) and high free radical scavenging ability (80–90%) for the modified Fabrics. The durability of the multifunctional properties has also been determined by several launderings.
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Sustainable development of mosquito-repellent, flame-retardant, antibacterial, fragrant and antioxidant linen using microcapsules containing Thymus vulgaris oil in in-situ generated chitosan-phosphate
Cellulose, 2021Co-Authors: Nagender Singh, Javed SheikhAbstract:In the present work, thyme oil embedded functional microcapsules were prepared using in-situ synthesized chitosan phosphate as a shell material through spray drying technique. The encapsulation efficiency (EE %) of microcapsules was determined to investigate the amount of oil entrapped inside the core-shell structure. The prepared microcapsules and Finished Fabric were characterized using FTIR, EDX, TGA and SEM analysis. The multifunctional properties of Finished Fabric were investigated using standard test methods. The Finished Fabric showed excellent antibacterial property (> 98%), antioxidant activity (96%), flame retardancy (LOI > 28), mosquito repellency (100%) and an excellent fragrance. The functional properties were found durable until at least 20 washes. The structure-property relationship was also confirmed through various characterization techniques. Graphic abstract
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Multifunctional finishing of cotton using chitosan extracted from bio-waste.
International journal of biological macromolecules, 2012Co-Authors: Mangesh D. Teli, Javed Sheikh, Parag BhavsarAbstract:In the current work, chitosan extracted from waste shrimp shells was used in finishing formulation for cotton Fabric, along with DMDHEU and other chemicals, imparting multiple performance characteristics such as wrinkle free, antibacterial and flame retardant properties. The Finished Fabrics were evaluated for textile properties like tensile strength, bending length, yellowness index and functional properties like crease recovery angle, antibacterial activity and flame retardancy and also for the ecological properties like formaldehyde release. The Finished Fabric showed excellent crease recovery, antibacterial property and flame retardancy which were retained to a moderate extent even after 20 washes. Besides formaldehyde scavenging action, chitosan clearly showed its positive role in imparting multifunctional properties to cotton.
Liran Bian - One of the best experts on this subject based on the ideXlab platform.
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A sustainable and cost effective surface functionalization of cotton Fabric using TiO2 hydrosol produced in a pilot scale: Condition optimization, sunlight-driven photocatalytic activity and practical applications
Industrial Crops and Products, 2018Co-Authors: Peng Wang, Yongchun Dong, Liran BianAbstract:Abstract This paper aimed to develop a successful multi-functional finishing of cotton Fabric with TiO2 hydrosol produced on a pilot-scale as a sustainable and cost-effective alternative to the market dominating nano TiO2 powders. The surface morphology, crystalline phase and photocatalytic activity of the Finished Fabric was evaluated and compared with those Finished with two commercial nano TiO2 powders. The Finished Fabric was tested for its ability to decompose indoor formaldehyde and to self-clean three different stains under illumination. The results indicated that 130 °C is the optimal curing temperature to obtain the Finished Fabric with higher TiO2 loading and catalytic activity. Increasing the pH of the TiO2 hydrosol enhanced the TiO2 loading, however, led to a lower activity. The catalytic activity of the TiO2 hydrosol Finished Fabric was similar to or higher than that of Finished Fabric with nano TiO2 powders. The catalytic activity of the hydrosol Finished Fabric was found to be sunlight-driven and greatly dependent on weather conditions. This Finished Fabric shows excellent decomposition of indoor formaldehyde and self-cleaning performance on different stains under compact fluorescent or solar irradiation.
Sanjeev R. Shukla - One of the best experts on this subject based on the ideXlab platform.
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A simple and efficient protocol to develop durable multifunctional property to cellulosic materials using in situ generated nano-ZnO
Cellulose, 2017Co-Authors: A. Arputharaj, Vigneshwaran Nadanathangam, Sanjeev R. ShuklaAbstract:This article focuses on the development of a durable multi-functional finish for cotton Fabric by direct synthesis of nano zinc oxide (nano-ZnO) particles in the pores of the fibres. Anions and cations of zinc nitrate interacted with cellulose molecules and opened up the internal pore structure of cellulosic fibrils that in turn acted as nucleating sites for the formation of nano-ZnO on reaction with sodium hydroxide. The Finished Fabric was characterized using XRD, FTIR, SEM, TEM, AAS, DSC and AFM. The Finished Fabric displayed excellent antibacterial activities (>99%) against two pathogens, Staphylococcus aureus (Gram-positive) and Klebsiella pneumoniae (Gram-negative) with 40 UPF even after 30 washes confirming the utility of this method. Inherent physical and mechanical properties of the Fabric were found to be unaffected. Low stress mechanical properties evaluated by Kawabata Evaluation System for Fabrics indicated that the total hand value of the Finished Fabric changed from 3.54 to 3.40. A plausible mechanism for in situ formation of nano-ZnO and its durability on cotton Fabric has been proposed.
Nagender Singh - One of the best experts on this subject based on the ideXlab platform.
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Sustainable development of mosquito-repellent, flame-retardant, antibacterial, fragrant and antioxidant linen using microcapsules containing Thymus vulgaris oil in in-situ generated chitosan-phosphate
Cellulose, 2021Co-Authors: Nagender Singh, Javed SheikhAbstract:In the present work, thyme oil embedded functional microcapsules were prepared using in-situ synthesized chitosan phosphate as a shell material through spray drying technique. The encapsulation efficiency (EE %) of microcapsules was determined to investigate the amount of oil entrapped inside the core-shell structure. The prepared microcapsules and Finished Fabric were characterized using FTIR, EDX, TGA and SEM analysis. The multifunctional properties of Finished Fabric were investigated using standard test methods. The Finished Fabric showed excellent antibacterial property (> 98%), antioxidant activity (96%), flame retardancy (LOI > 28), mosquito repellency (100%) and an excellent fragrance. The functional properties were found durable until at least 20 washes. The structure-property relationship was also confirmed through various characterization techniques. Graphic abstract
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Sustainable fragrance cum antimicrobial finishing on cotton: Indigenous essential oil
Sustainable Chemistry and Pharmacy, 2017Co-Authors: Nagender Singh, Manisha Yadav, Shelly Khanna, Omprakash SahuAbstract:Abstract Fragrance finishing of textile has been enormously increased and used in domestic and industrial application. Fragrance can be synthesis chemically but available in natural and inorganic. The investigation of this research is to study the combined effect of fragrance and antimicrobial finishing on cotton Fabric by lavender essential oil with the use of β-Cyclodextrin, Chitosan citrate and β-Cyclodextrin/Grafted Chitosan through pad-dry method. Fourier Transform Infrared spectroscopy (FTIR) was used to study the formation of ester bonds between β-cyclodextrin/grafted chitosan and cotton celluloses. For all the Finished Fabric samples fragrance release rate performance and antimicrobial properties were measure by standard test methods. The results revealed that β-CD was highly soluble in 0.6 gpl NaOH solution and 80 gpl β-CD and 6% essential lavender oil solutions were found to be a most suitable combination for fragrance and antimicrobial finishing. FTIR studies reveal about the formation of a carboxylic ester between cotton and β-Cyclodextrin/Grafted Chitosan at 1730 cm − 1 ester peak.
Md. Abdullah Al Mamun - One of the best experts on this subject based on the ideXlab platform.
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Ecological risk assessment and health safety speculation during color fastness properties enhancement of natural dyed cotton through metallic mordants
Fashion and Textiles, 2017Co-Authors: Md. Reazuddin Repon, M. Tauhidul Islam, Md. Abdullah Al MamunAbstract:Variety and durability of color are presumed as key constrains of natural dyes. So, this study attempts to investigate the effect of metallic mordants on the color fastness properties of ecologically dyed cotton Fabric using banana floral stem sap. Color difference was measured in terms of hue (ΔH*), chroma (ΔL*) and value (ΔC*) difference. Metal ions in residual mordanting bath, dyeing wastewater and level of trace metals in the Finished Fabric surface were accessed to justify the environmental safety and speculate the health risk respectively. Pre-mordanted specimens were dyed at 100 °C for 60 min. Optical properties of extracted sap were observed by UV visible spectroscopy. Dye fixation with fiber was determined by FTIR-ATR spectra. Atomic absorption spectroscopy was employed to determine the trace metals in Finished Fabric. Effect of metallic mordants were calculated in terms of color fastness to wash, water, perspiration, rubbing and light for estimating the color durability. Except light fastness property almost all color fastness values were 4/5, i.e. very good. Light fastness properties were improved for mordanting action with metallic salts. The level of trace metals in Finished Fabric were within the safe zone. Graphical abstract Metallic mordant assisted natural dyeing of cotton.
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ecological risk assessment and health safety speculation during color fastness properties enhancement of natural dyed cotton through metallic mordants
Fashion and Textiles, 2017Co-Authors: Md. Reazuddin Repon, Tauhidul M Islam, Md. Abdullah Al MamunAbstract:Variety and durability of color are presumed as key constrains of natural dyes. So, this study attempts to investigate the effect of metallic mordants on the color fastness properties of ecologically dyed cotton Fabric using banana floral stem sap. Color difference was measured in terms of hue (ΔH*), chroma (ΔL*) and value (ΔC*) difference. Metal ions in residual mordanting bath, dyeing wastewater and level of trace metals in the Finished Fabric surface were accessed to justify the environmental safety and speculate the health risk respectively. Pre-mordanted specimens were dyed at 100 °C for 60 min. Optical properties of extracted sap were observed by UV visible spectroscopy. Dye fixation with fiber was determined by FTIR-ATR spectra. Atomic absorption spectroscopy was employed to determine the trace metals in Finished Fabric. Effect of metallic mordants were calculated in terms of color fastness to wash, water, perspiration, rubbing and light for estimating the color durability. Except light fastness property almost all color fastness values were 4/5, i.e. very good. Light fastness properties were improved for mordanting action with metallic salts. The level of trace metals in Finished Fabric were within the safe zone.