Iusuf Khan - Academia.edu (original) (raw)

Papers by Iusuf Khan

Zenodo (CERN European Organization for Nuclear Research), Jun 1, 2023

The conventional dyeing process requires a substantial amount of auxiliaries and water, which lea... more The conventional dyeing process requires a substantial amount of auxiliaries and water, which leaches hazardous colored effluents to the environment. Herein, a newly developed sustainable spray dyeing system has been proposed for cotton fabric in the presence of reactive dyes, which has the potential to minimize the textile dyeing industries environmental impact in terms of water consumption and save significant energy. The results suggest that fresh dye solution can be mixed with an alkali solution before spray dyeing to avoid the reactive dye hydrolysis phenomenon. After that, color spray on the cotton knitted fabric by cold pad batch method. To find out the K/S value based on single factor analysis and L9 design analysis.

Industrial Crops and Products, Feb 1, 2022

Zenodo (CERN European Organization for Nuclear Research), Jul 29, 2022

This paper aims with Enzyme wash effect on Denim fabric. Denim washing is the vital part of finis... more This paper aims with Enzyme wash effect on Denim fabric. Denim washing is the vital part of finishing process to provide aged look and comfort by reducing the stiffness of garments. It is found that a garments construction is affected largely by washing especially GSM, on the other hand, physical properties in terms of tearing strength. The main objects of washing are to remove size materials to remove starch presents in fabric for soft feeling to wear the garments. The effect of Enzyme is decrease the fabric strength and increases the color fastness and rubbing fastness. A Denim Fabric of twill 3/1 construction was selected for this experiment. Then the Desizing process and then Enzyme wash process was done. Then some Physical and Mechanical tests were taken to compare the differences between the fabric properties before and after Enzyme wash. After Desizing and Enzyme wash we got GSM, Tensile strength and Color rating of the fabric. The Tensile Strength of the fabrics are decreased and increased the GSM by increasing enzyme ratio.

Dyeing of cotton fabrics with Reactive Red 2 using padding method (two dip two pad) was done; the... more Dyeing of cotton fabrics with Reactive Red 2 using padding method (two dip two pad) was done; the fixation of dyeing fabric had been done using either thermo fixation technique. Different parameters such as dyeing time, dye concentration, drying temperature and PH were used. The controllable factors such as dyeing time, dye concentration, drying temperature and PH have been used as input variables and K/S value of the fabric (after dyeing and after soaping) to find out fixation percentage i.e. as response variable for the construction of Taguchi model and Single Factor model. An L₉ orthogonal array design has been chosen and conducted 9 experiments for each experiment. The optimal parameters in the dyeing process of Reactive Red 2 have been identified as PH 10, dye concentration 5 g/L, drying time 3 min and drying temperature 70 °C. From Pareto Chart analysis we found the optimizing sequences are PH (A) (10) > Dyeing concentration (C) (5 gm/L) > Drying T...

There are lots of key and slight problems of textile dyeing industries such as shade variation or... more There are lots of key and slight problems of textile dyeing industries such as shade variation or dyeing faults and establishment of hue spots on the cloth external through coloring and downstream treating of textiles materials. Such problems in the delivery quality of fabric are generally attacked through a Hydrose and Caustic chemical stripping process which is a common practice in dyeing industries for the medium to dark shade batches. However, reactive dyes cannot be stripped satisfactorily from cellulosic materials due to the development of co-valent bonds between dye and fiber. This research was undertaken using 1.5% and 3% reactive dyes on R.F.D cotton fabric and dye sample stripping was carried out in different time and Temperature alkali reductive stripping process. The main objective of the work was to find the best stripping quality of cotton fabric. To find out the Strength loss, weight loss, and pilling resistance of stripped fabric were considered. When the increase of Time, temperature & concentration (Hydrose & Caustic) of stripping chemicals, the stripping percentages were improved; if stripping chemicals, processing time and temperature will much higher than the fibre or fabric damage will be occurred. So, we need to select optimum or suitable stripping Chemical, time and temperature.

Water and oil repellent treatment is done on cotton cloth by pad -dry - baking process. The influ... more Water and oil repellent treatment is done on cotton cloth by pad -dry - baking process. The influences of baking temperature, baking time, pH value and concentration of finishing liquid on water and oil contact position (angle) of fabric are analyzed. The result shows that the optimized water/oil repellent finishing process of cotton cloths is as follows: the concentration of finishing agent is 30g/L, pH value is 6.67, Pick up rate is 80%, and the baking time is 8 minutes under 140℃. After finishing, the oil and water contact position (angle) of the cotton fabrics can reach up to 143.33 degrees and 134 degrees respectively, and at this time the finishing effect is the best. Scanning electron microscopy (SEM) reveals that after water and oil repellent finishing, the external of the cotton fiber becomes smooth, the finishing agent has good film-forming ability, and it has well water and oil repellent performance.

Journal of Textile Science and Technology, 2020

Single jersey unfinished cotton weft knitted (loop formation) fabrics tend to undergo a certain d... more Single jersey unfinished cotton weft knitted (loop formation) fabrics tend to undergo a certain dimensional changes due to changeable yarn count (Ne) and variable stitch length on physical properties such as Shrinkage, Spirality, Bursting Strength, Pilling, GSM, (Gram per square meter). This study is founded on unfinished knit cloth where yarn counts recycled remained 24Ne, 28Ne, 30Ne for S/J. Single jersey unfinished cotton fabrics were produced with different count and with stitch length where it is found that for constant count, increase of the Stitch Length the GSM is decreased & for constant stitch length, increase of the count GSM is decreased. Used for constant stitch length, increase of the count the Bursting strength is decreased. Designed for constant count, by increase of stitch length the length wise shrinkage% is decreased & the fabric length is increased. Used for constant stitch length, by increase of the count the length wise shrinkage % is decreased & the fabric len...

Industrial Crops and Products

Mainly poly (lactic acid) (PLA) is a biocompatible thermoplastic aliphatic polymer. Among all of ... more Mainly poly (lactic acid) (PLA) is a biocompatible thermoplastic aliphatic polymer. Among all of the biodegradable polymer polylactic acid (PLA) is very significant on biomedical and biocompatible field. For the selection of an appropriate non-hazardous solvent or solvent system it’s important to determine the rheological properties and electrospinnability of the solution and the morphology of nanofibres. In this paper we have tried to investigate the solution of poly lactic acid (PLA) in various pure solvents and binary-solvent systems and their effect on different solution properties of nanofibre morphology and diameter. We observed the Nanofibre morphology by scanning electron microscopy (SEM). Compared to other solvent we found acetone/dimethylformamide solvent system gave the highest fibre productivity and finest defect-free nanofibres. Therefore, we also used various solvent ratio for more details. Also the polymer concentration in the solvent has great effect on nanofibre mor...

Journal of Textile Science and Technology

Zenodo (CERN European Organization for Nuclear Research), Jun 1, 2023

The conventional dyeing process requires a substantial amount of auxiliaries and water, which lea... more The conventional dyeing process requires a substantial amount of auxiliaries and water, which leaches hazardous colored effluents to the environment. Herein, a newly developed sustainable spray dyeing system has been proposed for cotton fabric in the presence of reactive dyes, which has the potential to minimize the textile dyeing industries environmental impact in terms of water consumption and save significant energy. The results suggest that fresh dye solution can be mixed with an alkali solution before spray dyeing to avoid the reactive dye hydrolysis phenomenon. After that, color spray on the cotton knitted fabric by cold pad batch method. To find out the K/S value based on single factor analysis and L9 design analysis.

Industrial Crops and Products, Feb 1, 2022

Zenodo (CERN European Organization for Nuclear Research), Jul 29, 2022

This paper aims with Enzyme wash effect on Denim fabric. Denim washing is the vital part of finis... more This paper aims with Enzyme wash effect on Denim fabric. Denim washing is the vital part of finishing process to provide aged look and comfort by reducing the stiffness of garments. It is found that a garments construction is affected largely by washing especially GSM, on the other hand, physical properties in terms of tearing strength. The main objects of washing are to remove size materials to remove starch presents in fabric for soft feeling to wear the garments. The effect of Enzyme is decrease the fabric strength and increases the color fastness and rubbing fastness. A Denim Fabric of twill 3/1 construction was selected for this experiment. Then the Desizing process and then Enzyme wash process was done. Then some Physical and Mechanical tests were taken to compare the differences between the fabric properties before and after Enzyme wash. After Desizing and Enzyme wash we got GSM, Tensile strength and Color rating of the fabric. The Tensile Strength of the fabrics are decreased and increased the GSM by increasing enzyme ratio.

Dyeing of cotton fabrics with Reactive Red 2 using padding method (two dip two pad) was done; the... more Dyeing of cotton fabrics with Reactive Red 2 using padding method (two dip two pad) was done; the fixation of dyeing fabric had been done using either thermo fixation technique. Different parameters such as dyeing time, dye concentration, drying temperature and PH were used. The controllable factors such as dyeing time, dye concentration, drying temperature and PH have been used as input variables and K/S value of the fabric (after dyeing and after soaping) to find out fixation percentage i.e. as response variable for the construction of Taguchi model and Single Factor model. An L₉ orthogonal array design has been chosen and conducted 9 experiments for each experiment. The optimal parameters in the dyeing process of Reactive Red 2 have been identified as PH 10, dye concentration 5 g/L, drying time 3 min and drying temperature 70 °C. From Pareto Chart analysis we found the optimizing sequences are PH (A) (10) > Dyeing concentration (C) (5 gm/L) > Drying T...

There are lots of key and slight problems of textile dyeing industries such as shade variation or... more There are lots of key and slight problems of textile dyeing industries such as shade variation or dyeing faults and establishment of hue spots on the cloth external through coloring and downstream treating of textiles materials. Such problems in the delivery quality of fabric are generally attacked through a Hydrose and Caustic chemical stripping process which is a common practice in dyeing industries for the medium to dark shade batches. However, reactive dyes cannot be stripped satisfactorily from cellulosic materials due to the development of co-valent bonds between dye and fiber. This research was undertaken using 1.5% and 3% reactive dyes on R.F.D cotton fabric and dye sample stripping was carried out in different time and Temperature alkali reductive stripping process. The main objective of the work was to find the best stripping quality of cotton fabric. To find out the Strength loss, weight loss, and pilling resistance of stripped fabric were considered. When the increase of Time, temperature & concentration (Hydrose & Caustic) of stripping chemicals, the stripping percentages were improved; if stripping chemicals, processing time and temperature will much higher than the fibre or fabric damage will be occurred. So, we need to select optimum or suitable stripping Chemical, time and temperature.

Water and oil repellent treatment is done on cotton cloth by pad -dry - baking process. The influ... more Water and oil repellent treatment is done on cotton cloth by pad -dry - baking process. The influences of baking temperature, baking time, pH value and concentration of finishing liquid on water and oil contact position (angle) of fabric are analyzed. The result shows that the optimized water/oil repellent finishing process of cotton cloths is as follows: the concentration of finishing agent is 30g/L, pH value is 6.67, Pick up rate is 80%, and the baking time is 8 minutes under 140℃. After finishing, the oil and water contact position (angle) of the cotton fabrics can reach up to 143.33 degrees and 134 degrees respectively, and at this time the finishing effect is the best. Scanning electron microscopy (SEM) reveals that after water and oil repellent finishing, the external of the cotton fiber becomes smooth, the finishing agent has good film-forming ability, and it has well water and oil repellent performance.

Journal of Textile Science and Technology, 2020

Single jersey unfinished cotton weft knitted (loop formation) fabrics tend to undergo a certain d... more Single jersey unfinished cotton weft knitted (loop formation) fabrics tend to undergo a certain dimensional changes due to changeable yarn count (Ne) and variable stitch length on physical properties such as Shrinkage, Spirality, Bursting Strength, Pilling, GSM, (Gram per square meter). This study is founded on unfinished knit cloth where yarn counts recycled remained 24Ne, 28Ne, 30Ne for S/J. Single jersey unfinished cotton fabrics were produced with different count and with stitch length where it is found that for constant count, increase of the Stitch Length the GSM is decreased & for constant stitch length, increase of the count GSM is decreased. Used for constant stitch length, increase of the count the Bursting strength is decreased. Designed for constant count, by increase of stitch length the length wise shrinkage% is decreased & the fabric length is increased. Used for constant stitch length, by increase of the count the length wise shrinkage % is decreased & the fabric len...

Industrial Crops and Products

Mainly poly (lactic acid) (PLA) is a biocompatible thermoplastic aliphatic polymer. Among all of ... more Mainly poly (lactic acid) (PLA) is a biocompatible thermoplastic aliphatic polymer. Among all of the biodegradable polymer polylactic acid (PLA) is very significant on biomedical and biocompatible field. For the selection of an appropriate non-hazardous solvent or solvent system it’s important to determine the rheological properties and electrospinnability of the solution and the morphology of nanofibres. In this paper we have tried to investigate the solution of poly lactic acid (PLA) in various pure solvents and binary-solvent systems and their effect on different solution properties of nanofibre morphology and diameter. We observed the Nanofibre morphology by scanning electron microscopy (SEM). Compared to other solvent we found acetone/dimethylformamide solvent system gave the highest fibre productivity and finest defect-free nanofibres. Therefore, we also used various solvent ratio for more details. Also the polymer concentration in the solvent has great effect on nanofibre mor...

Journal of Textile Science and Technology