42 breaking elongation figures 8 and 9 typify the

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4.2 Breaking Elongation Figures 8 and 9 typify the breaking elongations of the fabrics in both warp and weft directions. Signi fi cant differences can be seen in the breaking elongation of fabrics between nano fi nished and un fi nished fabrics. The necessary difference arises due to consolidation of fi bres and yarns by the nanosilver particles (Ebrahim and Mansour 2013 ). Fig. 5 Thickness of fabrics (Ebrahim and Mansour 2013 ) Advances in Nanotextile Finishes An Approach Towards Sustainability 7
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4.3 Bending Rigidity Figures 10 and 11 show the bending rigidity values of fabrics in the warp and weft directions, respectively. Fabric A has bending rigidity of 71.2 (mgr cm) in the warp direction and 72.5 (mgr cm) in the weft direction. In the case of Fabric E the bending rigidity values started to increase, and they reached to 126 (mgr cm) in the warp direction and 124 (mgr cm) in the weft direction (Ebrahim and Mansour 2013 ). This gradual upward trend is caused by the links which was formed on the yarns and Fig. 6 Breaking strength of fabrics in weft direction (Ebrahim and Mansour 2013 ) Fig. 7 Breaking strength of fabrics in warp direction (Ebrahim and Mansour 2013 ) Fig. 8 Breaking elongation of fabrics in warp direction (Ebrahim and Mansour 2013 ) Fig. 9 Breaking elongation of fabrics in weft direction (Ebrahim and Mansour 2013 ) 8 N. Gokarneshan et al.
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fabrics by nanosilver fi nishing. In the case of Fabric F, an increase in solution concentration to 500 ppm leads to a gradual fall, owing to decreasing form of links. 5 Micro- and Nanoencapsulation of Denim Fabrics 5.1 Overview The use of herbal extracts ( Ricinus communis, Senna auriculata and Euphorbia hirta ) holds good prospects as antimicrobial fi nishing on denim fabric. The fi nished fabric exhibits maximum antibacterial activity against both Escherichia coli and Staphylococcus aureus . The microencapsulation and nanoencapsulation techniques increase the durability of the herbal fi nishing. The fi ndings reveal antimicrobial effect even for the washed fabrics against the standard strains (Sumithra and Vasugi Raaja 2012 ). 5.2 Related Aspects It is a well known fact that bacteria can grow and survive on fabrics commonly used in healthcare environments for more than 90 days and hence contribute to the transmission of diseases (Gaurav 2005 ; Subhash and Sarkar Ajoy 2010 ). The recent trend has been the use of antimicrobial fi nishes using natural sources, which pro- motes natural and ecofriendly lifestyle (Natarajan 2002 ). Attempt has been made through application of plant extracts containing active substances, so as to explore Fig. 10 Bending rigidity of fabrics in warp direction (Ebrahim and Mansour 2013 ) Fig. 11 Bending rigidity of fabrics in weft direction (Ebrahim and Mansour 2013 ) Advances in Nanotextile Finishes An Approach Towards Sustainability 9
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the possibility of making the cloth microbial resistant (Sumithra and Vasugi Raaja 2012 ). These natural antimicrobial substances are not only ecofriendly but are also taken from renewable sources (Gaurav 2005 ). Bacterial growth in textile materials
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  • Fall '19
  • N. Gokarneshan

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