Application of UV protective finish on cotton fabric using plant extracts of Urtica dioica, Citrus limetta and Vitis vinifera
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Date
2017-07
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G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand)
Abstract
UV radiation from the sun is causing various harmful effects on skin of human beings. Fabric have potential to protect against these harmful UV rays, however not all fabric can provide protection thus this study was aimed at developing UV protective finish for Khadi cotton fabric. Plant materials like leaves of Urtica dioica and Vitis vinifera as well as peels of Citrus limetta were used for developing UV protective finish. These plant extracts was applied on the cotton fabric using different methods of application i.e. exhaust method, microwave method and microencapsulation method. Finishing conditions for application of each selected plant extract were optimized using box and behnken design under design expert software version 10.
Different optimized finishing condition was observed for each of the method of application. In case of exhaustion method 10.59%, 9.651% and 9.032% concentration of Urtica dioica, Citrus limetta and Vitis vinifera extracts was selected respectively as optimum concentration. Optimum exhaustion temperature was found 40oC for application of Urtica dioica and Citrus limetta while 40.939o C for Vitis vinifera. Thirty minutes of exhaustion time was found optimum in case of application of Urtica dioica extract while 60 minutes for application of Citrus limetta as well as for Vitis vinifera extract was found to be optimum. In case of microwave method, optimum concentration was selected as 11%, 8.413%, 9.380% concentration of the Urtica dioica, Citrus limetta and Vitis vinifera extract respectively. Optimum power of microwave was found to be 320.154 watt, 317.889 watt and 312.901 watt for Urtica dioica, Citrus limetta and Vitis vinifera extract respectively. Treatment time i.e. 5.511 minutes, 6.758 minutes and 7 minutes was found optimum for Urtica dioica, Citrus limetta and Vitis vinifera extract respectively. In case of microencapsulation method, Optimum concentration of microcapsules was observed as 4.117%, 5.000%, 3.574% for Urtica dioica, Citrus limetta and Vitis vinifera extract respectively. Concentration of binder as 3%, 2.761%, and 2.942 % was observed to be optimum for application of Urtica dioica, Citrus limetta and Vitis vinifera microcapsules respectively. Optimum curing temperature for application of Urtica dioica, Citrus limetta and Vitis vinifera extract was found was 113.254o C, 100o C and 120.664o C respectively. It can be concluded that very good to excellent UV protection properties can be incorporated in khadi cotton fabric by using Urtica dioica, Citrus limetta and Vitis vinifera extract. Microencapsulation method was observed to be best with regard of UPF, tensile strength, lightness value as well as in providing maximum durability. Addition of UV protection property will not only provide protection against UV rays but also help to add value in khadi fabric which would increases the market for khadi cotton fabric.
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