Papers by Md. Ibrahim H. Mondal
Nanoscience and Nanotechnology, 2015
Chitosan-silver nanoparticles are prepared in nonaqueous medium. In this work, sodium dodecyl sul... more Chitosan-silver nanoparticles are prepared in nonaqueous medium. In this work, sodium dodecyl sulfate (SDS) was introduced into the dimethylformamide (DMF) solution during silver reduction from solution of its precursor salt AgNO 3, acting as a stabilizing agent to prevent aggregation of silver nanoparticles, while chitosan is used as the solid support to embedded silver particles therein, resulting in chitosan-silver (CS-Ag) nanoparticle as suspension in the medium. The reaction started as homogeneous system which turned into heterogeneous with the formation of particles. The properties of CS-Ag nanoparticles are studied under two different salt concentrations and characterized by atomic force microscopy (AFM), scanning electron microscopy (SEM), fourier transform infrared spectroscopy (FTIR) and ultraviolet-visible spectroscopy (UV-Vis). Wide particle size distribution of synthesized nanoparticles depicts that concentration of AgNO 3 , which is responsible for the morphology, stability and particle size distribution, should be optimized, suggesting a lower salt concentration is favorable.
SSRG international journal of polymer and textile engineering, Apr 25, 2021
Fashion and Textiles, Mar 24, 2016
Recently, due to the improvement of people's living standards and need for environmental protecti... more Recently, due to the improvement of people's living standards and need for environmental protection, the demand for natural, biodegradable and eco-friendly jute fiber has been rising day-by-day. In our daily life, it can serve many purposes, such as in the manufacture of sackings, hessians, carpet backing and the like. However, jute has certain unfavorable properties. It is coarse, stiff and not extensible. It has low wet strength. It has a harsh feel. It is not very adaptable. It shrinks significantly
Biomedical Journal of Scientific & Technical Research, 2021
Now-a-days textiles are used in different sectors and various purposes beyond imagination. Among ... more Now-a-days textiles are used in different sectors and various purposes beyond imagination. Among this an important and emerging part of the textile industry is medical, hygiene and health sector. Chitosan and its derivatives, trimethyl chitosan chloride (TMCC) and carboxymethyl-trimethyl chitosan chloride (CMTMCC) were prepared. Chitosan, TMCC and CMTMCC were applied on cotton fabric by pad-drycure method. Different properties of chitosan derivatives and modified fabric were characterized. The yield percentage of chitosan, TMCC and CMTMCC was 66.5, 102 and 93% respectively. The profiles of FTIR spectroscopy of the chitosan, TMCC and CMTMCC synthesized from chitosan were almost similar except the different characteristic peak which shows evidence of the conversion of chitosan to TMCC and CMTMCC. CMTMCC modified fabric exhibited best antimicrobial activity. TMCC and CMTMCC treated fabric showed more wicking height (cm) comparatively than chitosan treated fabric. Moisture absorption and moisture liberation, swelling and water vapor permeability of treated fabric were investigated. Thermal stability of treated fabric was also studied. All these characteristics support the TMCC and CMTMCC treated fabric could be the valuable materials for medical textile sector.
International Journal of Polymer and Textile Engineering, 2021
Dyeing behaviour, tenacity and colour fastness characteristics of degummed, AA-, MMA- and EMA-gra... more Dyeing behaviour, tenacity and colour fastness characteristics of degummed, AA-, MMA- and EMA-grafted silk fibres with A052, AV7 and AR114 were investigated. Dye absorption was greatly affected by the parameters variables, such as dye concentration, sodium sulphate and acetic acid as electrolyte concentration, dyeing time and dyeing temperature, and depends on the dye and fibre characteristics. The dye absorption of A052, AV7 and AR114 dyes by AA-, MMA- and EMA-grafted silk fibres at optimized condition was 5-12% higher than that of degummed silk fibre. Due to the dyeing treatment both the modified and unmodified fibres lost tenacity to about 5% and the tenacity of modified dyed silk fibre was higher in both heat and sunlight effect. The colour fastness characteristics of dyed modified silk fibre was higher in sunlight, soap wash, some acid and alkalis than that of dyed degummed silk fibre.
Silk is a very fine, regular, translucent natural animal protein fibre. Raw and degummed silk fib... more Silk is a very fine, regular, translucent natural animal protein fibre. Raw and degummed silk fibres were dyed with extracted vegetable dyes such as catechu brown, waste dabshell and waste banana stem dyes mixed with Reactive Red 120. Silk fibre became more permanently even and bright when it was dyed with 2.0-3.0% of the mixed dyes. In each case, optimum conditions of dyeing were determined and fastness characteristics were studied.
Vegetable dyes. i.e. Khair, Dabshell, Banana stem dyes were isolated and blended with synthetic d... more Vegetable dyes. i.e. Khair, Dabshell, Banana stem dyes were isolated and blended with synthetic dye like Reactive Red 120. These blended dyes were applied on silk and cotton fibres. On silk, the blended dyes produced deepchocolate colour with catechu brown dye of khair; deep brown with Dabshell dye and deep red with Banana stem dye; but on cotton, the colour and shade changed to reddish brown, light reddish brown and medium reddish brown respectively. The similar effect was observed on both mordanted silk and cotton fibres under the same reaction conditions and the shades were fast to sun light and wash.
Denim garments are most preferred of today’s youth. This paper presents the effect of bleach wash... more Denim garments are most preferred of today’s youth. This paper presents the effect of bleach wash using bleaching powder on 100% cotton indigo dyed denim garments (trousers) to develop novel design and cost effective finishing. Garments were processed using three parameters, bleach concentration 5g/l to 15g/l, temperature 40°C to 60°C and time 20 min to 40 min. The effect of each parameter is discussed. Physical and mechanical properties of the treated and untreated garment that were monitored include: tensile strength, stiffness, elongation at break, weight loss, dimensional stability, color fading, water absorption and moisture regain. Scanning electron micrograph (SEM) was also examined. Bleach washing and without washing revealed big differences in tensile strength, stiffness, GSM, color fading and surface roughness. The optimized washing condition for the best value is 10g/l bleach concentration with temperature 40°C and treatment time 20 min.
Current Journal of Applied Science and Technology, 2019
Vinyltrimethoxy silane and aminopropyl triethoxysilane were used for surface functionalization to... more Vinyltrimethoxy silane and aminopropyl triethoxysilane were used for surface functionalization to enhance the textile performance of cotton. The process was carried out in an ethanol-water medium, which accelerated the cross-linking reaction between fiber and silane monomers. The process was optimized carefully as a function of fiber weight gain. The optimized modification conditions were silane monomer concentration 600 and 300% (on weight of fiber), ethanol-water ratio 60:40 and 80:20, pH 3.5 and 5, reaction time 90 and 60 min at room temperature (30°C), for VTMS and APTES, respectively. The silane-modified cotton fiber showed improved tensile strength, water repellency, thermal stability and wrinkle recovery. These improvements are due to flexibility of the Si-O bond and the fiber matrix interfacial strength properties. Instrumental analyses, such as FTIR, TGA, DTG, SEM and EDX, were carried out successfully. FTIR was used to identify the Si-O-Si group of VTMS and the Si-O-CH3 of...
Journal of Engineered Fibers and Fabrics, 2013
The graft copolymerization of methyl acrylate and methyl methacrylate vinyl monomers onto jute fi... more The graft copolymerization of methyl acrylate and methyl methacrylate vinyl monomers onto jute fiber using potassium persulfate and ferrous sulfate redox system was investigated in an aqueous medium. Optimized reaction conditions for the graft copolymerization were established for parameter variables, of monomer concentration, initiator concentration, catalyst concentration, reaction time, and reaction temperature. The grafting degrees were found to depend on the above mentioned variables. A maximum graft yield of 17.3% for MA and 19.4% for MMA was obtained under effective optimized conditions for grafting. The attachment of the monomer on the grafted fiber was confirmed by FTIR studies. Dyeing was affected by monomer characteristics, and due to the development of hydrophobic nature on jute fiber by grafting, a lower amount of dye absorption occurred. Grafting has a favorable influence on tenacity, color fastness, and other properties of jute fiber.
Research Journal of Textile and Apparel, 2016
Purpose This study aims to explore the use of knitted rag by synthesizing different grades of car... more Purpose This study aims to explore the use of knitted rag by synthesizing different grades of carboxymethyl cellulose (CMC) by applying multiple-step carboxymethylation techniques. Design/methodology/approach CMC was synthesized from knitted rag, a cellulosic waste of textile and garment industries, in aqueous ethanolic sodium hydroxide and subsequently mono-chloroacetic acid reaction medium. Low-substituted to high-substituted products were obtained from single-step to seven-step carboxymethylation of cellulose. In this way, it was possible to produce low-cost and different grades of substituted carboxymethylated cellulose. The synthesized CMC was characterized, and their physical properties were investigated. The structure of CMC and grafted CMC were investigated by Fourier transform infrared spectroscopy. Findings Solubility, CMC content, degree of substitution and molecular weight of CMC were increased gradually with the increase in the number of reaction steps, although fourth ...
International Journal of Biological Macromolecules, 2015
Alpha-cellulose extracted from corn husks was used as the raw material for the production of food... more Alpha-cellulose extracted from corn husks was used as the raw material for the production of food-grade carboxymethyl cellulose (CMC). Preparation of CMC from husk cellulose was carried out by an etherification process, using sodium hydroxide and monochloroacetic acid (MCA), with ethanol as the supporting medium. Characterizations of CMC were carried out by analyzing the spectra of FTIR, XRD patterns and SEM photomicrographs. Degree of substitution (DS) was determined with respect to particle size using chemical methods. Solubility, molecular weight and DS of CMC increased with decreased cellulose particle sizes. Microbiological testing of the prepared CMC was done by the pour plate method. Concentrations of heavy metals such as arsenic, lead, cadmium and mercury in the purified CMC were measured by Atomic Absorption Spectroscopy technique and found to be within the WHO/FAO recommended value. A comparative study with CMC available in the international market was conducted. The purity of the prepared CMC was higher, at 99.99% well above the purity of 99.5% for standard CMC. High purity CMC showed a yield 2.4 g/g with DS 2.41, water holding capacity 5.11 g/g, oil holding capacity 1.59 g/g. The obtained product is well suited for pharmaceutical and food additives.
Journal of Chemical Engineering, 2014
Chemical washing of fresh-assembled denim garment is a fundamental finishing process in textile a... more Chemical washing of fresh-assembled denim garment is a fundamental finishing process in textile and ready-made garment industries and has the largest effect on the physico-mechanical properties on finished denim garment. In this study, modification of denim trousers by washing using pumice stone mixed with bleaching powder was investigated. The fresh-assembled denim trousers, twill 3/1 weave and composition 100% cotton, have been processed by stone-bleach treatment using parameters namely concentration of bleaching powder (5.0 to 15.0 g/L) (owl) with 30% pumice stone (owg) at washing temperature 40oC and at pH 10.5 for treatment time 20 min in the fiber to liquor ratio of 1:10 in an industrial sample washing machine. In order to evaluate the influence of these washing parameters on the properties of denim trouser like tensile strength, fabric weight, color change, stiffness and water absorption, has been determined. Fabric surface was also examined by scanning electron microscope (S...
Journal of Chemical Engineering, 2013
Denim garment is the most preferred of todays youth. This paper presents the effect of enzyme wa... more Denim garment is the most preferred of todays youth. This paper presents the effect of enzyme wash using cellulase enzyme on the properties of denim garments to develop novel design and fashion. Three parameters in enzyme washing namely concentration of enzyme, washing temperature and time at pH 5.5 were considered. To investigate the optimum washing condition, indigo dyed cotton denim garments (trousers) were chosen and processed by enzyme with the concentration of 0.5% to 3.5%, temperature 40°C to 70°C and time 20 min to 60 min for the achievement with desired worn and aged effect. The effect of each parameter is discussed, and denim garments properties like tensile strength, elongation at break, weight loss, stiffness, water absorption, shrinkage, color fading and morphological values by SEM were evaluated. The optimized washing condition for the best value is 2% enzyme concentration at 55°C for 40 min. DOI: http://dx.doi.org/10.3329/jce.v27i1.15854 Journal of Chemical Engineer...
Journal of Biological Sciences, 2003
Journal of Biological Sciences, 2003
Materials Science and Engineering: A, 2011
ABSTRACT
Journal of Applied Sciences, 2005
Uploads
Papers by Md. Ibrahim H. Mondal