ENCAPSULATED PLANT EXTRACTS FOR ANTIMICROBIAL FINISH ON CELLULOSIC TEXTILES
KrishiKosh
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Title |
ENCAPSULATED PLANT EXTRACTS FOR ANTIMICROBIAL FINISH ON CELLULOSIC TEXTILES
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Creator |
PUSHPA LATHA, K
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Contributor |
ANITHA, D
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Subject |
PLANT, ANTIMICROBIAL, CELLULOSIC, TEXTILES
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Description |
Increasing global competition in textiles has created many challenges for textile researchers. Novel finishes of high added value for apparel fabrics are also greatly appreciated by the most demanding consumer market. Antimicrobial textiles with improved functionality find a variety of applications such as health and hygiene products, specially the garments worn close to the skin and in the area of medical applications. Textile materials are good carriers of various types of microorganisms and can cause health related problems to the wearer. In order to protect from the wearer from such infection the textile fabrics can be finished with antimicrobial agents. There are several studies in literature in which natural materials have been used to give antimicrobial finishing to the textile materials. One of the major limitations in the natural materials based antimicrobial finishing is the non durability of the finish since they cannot form any bond with the textile materials. Microencapsulation of natural materials is one of the methods used to increase the durability of the antimicrobial finishing on the textile materials. Thus, in the present study an attempt was made to finish cotton textiles with microcapsules from plant sources with combination of gum sources to impart the antimicrobial finish. Microcapsules were prepared with plant sources as a core material and gum sources as wall material at two different concentrations. Scanning Electron Microscope (SEM) at 1600 to 8500 magnification revealed that the microcapsules were between 1.24μm to 2.29 μm. Increase in gum percent resulted in increase in size of microcapsule. Finish was applied to woven and knitted textiles using pad-dry-cure method with curing at 35° to 40°C. The antibacterial activity was evaluated by a modified qualitative test method AATCC-147, 2004 for the growth inhibition and AATCC-30, 2004, for anti fungal activity against both Staphylococcus aureus and Escherichia coli. Antibacterial bacterial activity was found to be zero in both untreated woven and knitted fabrics. Among the treated fabrics, periwinkle with all gum sources showed higher Zoi against E.coli over S. aureus in both woven and knitted fabrics. Fabrics finished with microcapsules with 5 per cent gum as wall material had high Zoi than their counter parts. Treated knitted samples performed better than woven samples for all sources. Microcapsules made from sources CS and PG with bagawathi gum at 10 per cent concentrations showed least Zoi on both the fabric types. There was a slight decrease in antibacterial activity of all sources and concentrations after the first wash. Improved antibacterial activity was found in woven and knitted samples after third wash at 5 per cent concentration with PW+GA and PW+BG, and decrease in combination of CS+GG. A decreased antibacterial activity was observed in both woven and knitted samples against both organisms after fifth wash compared to first and third wash. All plant sources with 5 per cent GA were found to possess good Zoi among all treatments in woven samples against both organisms even after ten washes. The results of antifungal activity indicated that there was minimal fungal growth for few sources while samples washed for five and ten cycles did not support any fungal growth. Analysis of geometric parameters of fabrics showed a slight increase in yarn count, fabric count, fabric weight in few samples and decrease of thickness in majority of samples. These findings indicated that periwinkle in both concentration with all three wall materials exhibited better antibacterial activity among all. |
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Date |
2016-06-01T14:13:26Z
2016-06-01T14:13:26Z 2011 |
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Type |
Thesis
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Identifier |
http://krishikosh.egranth.ac.in/handle/1/66546
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Language |
en
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Relation |
D8922;
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Format |
application/pdf
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Publisher |
ACHARYA N.G. RANGA AGRICULTURAL UNIVERSITY
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