Two low rormaldehyde-based res ins along wi th one normal res in based on DMDHEU have been appli ... more Two low rormaldehyde-based res ins along wi th one normal res in based on DMDHEU have been appli ed separately as we ll as along with flu orocarbon fi ni sh on 100% cotton and 70/30 po lyes ter-cotton ble nded fab rics in varying concentrat ion and the ir errec ts on add-on, du rabi lity in terms o r water and o il repelle ncy and tensile strength studied to make the fi nishing process more ecorriendly and suitab le ror its use in protec ti ve clo thing fo r pes tic ide industry. T he resins have also been e valuated in terms of their influence on water vapour permeability, c reasing behaviour, stiffness and free formaldehyde content o f the fi ni shed fabrics . It is observed that the type of res in and its concentrat io n affect the durab ili ty o f flu orocarbon finish to laundering. G lyoxa l-based resin ex hibits minimum free fo rma ldehyde content, minim um loss in strength and better du rability to lau ndering even at lower concentrati on. T he optimi zed recipe consists o f ...
A comparative assessment of various commercially available fluorocarbon finishes for their use in... more A comparative assessment of various commercially available fluorocarbon finishes for their use in protective clothing in pesticide industry has been made. The finishes have been applied on 100% cotton and 70/30 polyester/cotton fabrics at different concentrations and their effect on tensile behaviour, air permeability, stiffness and crease recovery of fabrics studied. The finished fabrics have been evaluated for water and oil repellency. The durability of finishes to laundry has also been assessed. It is observed that the water and oil repellent properties of polyester/cotton blend are better than those of cotton. Finishes A and B perform better than finishes C and D in terms of percentage absorption, permeability of water, oil repellency and tensile strength. Finish A at 40gpl and 60gpl and finish B at 60gpl are recommended for protective clothing as they show maximum improvement in water, oil and pesticide repellency.
Dupion silk was qegummed with seven different commercial proteases. Conditions with respect to co... more Dupion silk was qegummed with seven different commercial proteases. Conditions with respect to concentration and time fwereoptirnised for each enzyme and degumming efficiency calculated The treated samples were tested for tensile strength, handle, lustre and microscopic structure. Alkaline proteases have shown good results and the efficiency of degumminghas been found to vary with the variety of dupion.
Cleaning ensures sanitization and thus safety of the artefact itself and others stored/displayed ... more Cleaning ensures sanitization and thus safety of the artefact itself and others stored/displayed in its vicinity. At the same time, the process invariably alters the character of textile to a certain extent. Cleaning ensures removal/deactivation of soil and harmful organic matter from the artefact. However, small amount of surface molecules from the textile might be eroded in the process as well. This leads to weakening of the textile and might cause alteration in colour spectrum/ depth etc. Controlled cleaning techniques in conservation laboratories focus on minimizing this damage. However, not much scientific data is available on efficacy of present cleaning techniques employed in conservation laboratories. Presently aqueous cleaning and solvent cleaning are primary modes utilised as next step to dry tools. Additionally novel cleaning technologies like enzyme wash and ultrasonic wash provide soil specific methodology that would reduce the threat to base fabric. Present paper is a systematic analysis of these cleaning techniques and their impact on aged museum fabrics, i.e., cotton, wool and silk. Change in tensile strength parameters, whiteness index and yellowness index have been used as indicators to test efficacy of different cleaning techniques on aged museum textiles. Numerical data generated by laboratory experiments clearly indicates that there is no standard cleaning treatment available for the three natural fibres. Each fibre has exhibited suitability to different cleaning treatment, while balancing between restored whiteness and minimizing strength loss.
Two low rormaldehyde-based res ins along wi th one normal res in based on DMDHEU have been appli ... more Two low rormaldehyde-based res ins along wi th one normal res in based on DMDHEU have been appli ed separately as we ll as along with flu orocarbon fi ni sh on 100% cotton and 70/30 po lyes ter-cotton ble nded fab rics in varying concentrat ion and the ir errec ts on add-on, du rabi lity in terms o r water and o il repelle ncy and tensile strength studied to make the fi nishing process more ecorriendly and suitab le ror its use in protec ti ve clo thing fo r pes tic ide industry. T he resins have also been e valuated in terms of their influence on water vapour permeability, c reasing behaviour, stiffness and free formaldehyde content o f the fi ni shed fabrics . It is observed that the type of res in and its concentrat io n affect the durab ili ty o f flu orocarbon finish to laundering. G lyoxa l-based resin ex hibits minimum free fo rma ldehyde content, minim um loss in strength and better du rability to lau ndering even at lower concentrati on. T he optimi zed recipe consists o f ...
A comparative assessment of various commercially available fluorocarbon finishes for their use in... more A comparative assessment of various commercially available fluorocarbon finishes for their use in protective clothing in pesticide industry has been made. The finishes have been applied on 100% cotton and 70/30 polyester/cotton fabrics at different concentrations and their effect on tensile behaviour, air permeability, stiffness and crease recovery of fabrics studied. The finished fabrics have been evaluated for water and oil repellency. The durability of finishes to laundry has also been assessed. It is observed that the water and oil repellent properties of polyester/cotton blend are better than those of cotton. Finishes A and B perform better than finishes C and D in terms of percentage absorption, permeability of water, oil repellency and tensile strength. Finish A at 40gpl and 60gpl and finish B at 60gpl are recommended for protective clothing as they show maximum improvement in water, oil and pesticide repellency.
Dupion silk was qegummed with seven different commercial proteases. Conditions with respect to co... more Dupion silk was qegummed with seven different commercial proteases. Conditions with respect to concentration and time fwereoptirnised for each enzyme and degumming efficiency calculated The treated samples were tested for tensile strength, handle, lustre and microscopic structure. Alkaline proteases have shown good results and the efficiency of degumminghas been found to vary with the variety of dupion.
Cleaning ensures sanitization and thus safety of the artefact itself and others stored/displayed ... more Cleaning ensures sanitization and thus safety of the artefact itself and others stored/displayed in its vicinity. At the same time, the process invariably alters the character of textile to a certain extent. Cleaning ensures removal/deactivation of soil and harmful organic matter from the artefact. However, small amount of surface molecules from the textile might be eroded in the process as well. This leads to weakening of the textile and might cause alteration in colour spectrum/ depth etc. Controlled cleaning techniques in conservation laboratories focus on minimizing this damage. However, not much scientific data is available on efficacy of present cleaning techniques employed in conservation laboratories. Presently aqueous cleaning and solvent cleaning are primary modes utilised as next step to dry tools. Additionally novel cleaning technologies like enzyme wash and ultrasonic wash provide soil specific methodology that would reduce the threat to base fabric. Present paper is a systematic analysis of these cleaning techniques and their impact on aged museum fabrics, i.e., cotton, wool and silk. Change in tensile strength parameters, whiteness index and yellowness index have been used as indicators to test efficacy of different cleaning techniques on aged museum textiles. Numerical data generated by laboratory experiments clearly indicates that there is no standard cleaning treatment available for the three natural fibres. Each fibre has exhibited suitability to different cleaning treatment, while balancing between restored whiteness and minimizing strength loss.
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