Multi-response optimization in impregnation of chitosan nanoparticles on polyester fabric
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A Taguchi design was employed to optimize the recipe for in vitro antibacterial activity of polyester fabric treated with chitosan nanoparticles (CNPs), which were prepared using sodium tripolyphosphate as cross-linker under ionic gelation method. The CNPs treated polyester fabric with recommended recipe under Taguchi design showed about 5 mm zone of inhibition against E. coli and 5.5 mm against S. aureus. Scanning electron microscopy installed with an energy-dispersive x-ray detector was used to observe the morphology and presence of CNPs on the treated fabric. Based on statistical design, it was found that optimum process conditions were 15 g/l of CNPs, 90 g/l of cross-linker and 140 °C curing temperature. Analysis of variation indicated that the concentration of CNPs and cross-linker significantly affected the antibacterial properties of polyester fabric. Finally, a validation run confirmed the authenticity of proposed recipe. The polyester fabric showed good antibacterial activity with minimum loss of its inherent textile properties.
KeywordsAntibacterial Chitosan Polyester fabric Nanoparticles
The authors highly recognize the Higher Education Commission of Pakistan for research fund to conduct this study.
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