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Polymers 2017, 9(10), 468; doi:10.3390/polym9100468

pH-Mediated Antibacterial Dyeing of Cotton with Prodigiosins Nanomicelles Produced by Microbial Fermentation

1,2,†,* , 1,2,†
School of Textiles, Tianjin Polytechnic University, Tianjin 300387, China
Key Laboratory of Advanced Textile Composites, Tianjin Polytechnic University, Ministry of Education, Tianjin 300387, China
These authors contributed equally and mainly to this study. Yanfei Ren should be regarded as joint first authors.
Authors to whom correspondence should be addressed.
Received: 19 August 2017 / Revised: 15 September 2017 / Accepted: 20 September 2017 / Published: 23 September 2017
(This article belongs to the Special Issue Antimicrobial Polymers)
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This study developed a novel pH-mediated antimicrobial dyeing process of cotton with prodigiosins nanomicelles produced by microbial fermentation. The average diameter of the pigment nanomicelles was 223.8 nm (range of 92.4–510.2 nm), and the pigment concentration was 76.46 mg/L. It was found that the superior dyeing effect of cotton fabric was achieved by adjusting the dye bath pH. When the pH was three, dyed cotton under 90 °C for 60 min exhibited the greatest color strength with good rubbing, washing and perspiration color fastness. By the breaking strength test and XRD analysis, it was concluded that the cotton dyed under the optimum condition almost suffered no damage. In addition, due to the presence of prodigiosins, dyed cotton fabric under the optimal process showed outstanding bacteriostatic rates of 99.2% and 85.5% against Staphylococcus aureus and Escherichia coli, respectively. This research provided an eco-friendly and widely-applicable approach for antimicrobial intracellular pigments with the property of pH-sensitive solubility in water to endow cellulose fabric with color and antibacterial activity. View Full-Text
Keywords: pH-mediated dyeing; antibacterial property; prodigiosins; nanomicelles; microbial pigment; cotton pH-mediated dyeing; antibacterial property; prodigiosins; nanomicelles; microbial pigment; cotton

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Gong, J.; Ren, Y.; Fu, R.; Li, Z.; Zhang, J. pH-Mediated Antibacterial Dyeing of Cotton with Prodigiosins Nanomicelles Produced by Microbial Fermentation. Polymers 2017, 9, 468.

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