Issue 3, 2017

N-Halamine modified thermoplastic polyurethane with rechargeable antimicrobial function for food contact surface

Abstract

A polymer blend of two N-halamine precursors was prepared and homogeneously incorporated into TPU structure via a solvent casting method, and an N-halamine modified TPU film with rechargeable antimicrobial activity resulted after treating with chlorine bleach. Antimicrobial efficacies were evaluated against both Staphylococcus aureus (S. aureus) and Escherichia coli O157:H7 (E. coli). Results showed that the N-halamine modified TPU film caused 6 log CFU reduction of bacteria reduction within 2 hours of contact. Moreover, the N-halamine modified TPU displayed desirable rechargeability and stability, which maintained sufficient antimicrobial activity after 20 cycles of “discharge–recharge” process and over 4 weeks of storage. Besides, the tensile strength and surface tension of TPU were not adversely affected by N-halamine modification. The N-halamine modified TPU with rechargeable antimicrobial function exhibited great potential as a cheap, safe and effective food contact surface material for preventing food microbial cross-contamination.

Graphical abstract: N-Halamine modified thermoplastic polyurethane with rechargeable antimicrobial function for food contact surface

Supplementary files

Article information

Article type
Paper
Submitted
19 okt 2016
Accepted
13 nov 2016
First published
04 jan 2017
This article is Open Access
Creative Commons BY license

RSC Adv., 2017,7, 1233-1240

N-Halamine modified thermoplastic polyurethane with rechargeable antimicrobial function for food contact surface

M. Qiao, T. Ren, T. Huang, J. Weese, Y. Liu, X. Ren and R. Farag, RSC Adv., 2017, 7, 1233 DOI: 10.1039/C6RA25502G

This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. You can use material from this article in other publications without requesting further permissions from the RSC, provided that the correct acknowledgement is given.

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