Issue 13, 2019

Studies of PET nonwovens modified by novel antimicrobials configured with both N-halamine and dual quaternary ammonium with different alkyl chain length

Abstract

This work describes the synthesis of novel antimicrobial agents consisting of N-halamine and dual quaternary ammonium with different alkyl chain lengths and their antimicrobial applications for PET nonwovens. The antimicrobial agents were grafted onto PET nonwovens via esterification with a crosslinker, 1,2,3,4-butanetetracarboxylic acid (BTCA). The cyclic amide structure in the antimicrobial agents could be easily converted to N-halamine after immersion in a diluted chlorine bleach solution. Variations in surface chemical composition of the modified PET nonwovens were examined by XPS. Antimicrobial activities of the nonwovens/fabrics were tested against S. aureus (Gram-positive) and E. coli (Gram-negative) strains. Systematic investigation showed the antibacterial activities were dependent upon the alkyl chain length. The synergism of N-halamine and dual quaternary ammonium could lead to significant antimicrobial activity with inactivation of up to 90% of S. aureus and E. coli after 10 minute contact. This work suggested that the novel composite biocides with N-halamine and dual quaternary ammonium groups and the associated surface modification methods could be of use for further developing antimicrobial nonwoven applications.

Graphical abstract: Studies of PET nonwovens modified by novel antimicrobials configured with both N-halamine and dual quaternary ammonium with different alkyl chain length

Supplementary files

Article information

Article type
Paper
Submitted
05 yan 2019
Accepted
27 fev 2019
First published
04 mar 2019
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2019,9, 7257-7265

Studies of PET nonwovens modified by novel antimicrobials configured with both N-halamine and dual quaternary ammonium with different alkyl chain length

H. Chien, Y. Chen, Y. Chen, C. Cheng and J. Lin, RSC Adv., 2019, 9, 7257 DOI: 10.1039/C9RA00094A

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