Antibacterial cotton treated with N-halamine and quaternary ammonium salt

• Published in: Cellulose (London) Vol. 20; no. 6; pp. 3123 - 3130
• Main Authors: Liu, Ying, Ma, Kaikai, Li, Rong, Ren, Xuehong, Huang, T. S
• Format: Journal Article
• Language: English
• Published: Dordrecht Springer-Verlag 01-12-2013; Springer Netherlands; Springer Nature B.V
• Subjects: Ammonium chloride; ammonium salts; Antiinfectives and antibacterials; Antimicrobial agents; antimicrobial properties; Bacteria; Biocides; Bioorganic Chemistry; Ceramics; Chemistry; Chemistry and Materials Science; Coatings; Composites; Cotton; Cotton fibers; E coli; Escherichia coli; Escherichia coli O157; Glass; Gram-negative bacteria; Hydantoin; Hydrophobicity; lint cotton; Natural Materials; Organic Chemistry; Original Paper; Physical Chemistry; Polymer Sciences; Quaternary ammonium salts; Staphylococcus aureus; Sustainable Development; temperature; Quaternary ammonium salt; Antibacterial; Cotton; halamine
• ISSN: 0969-0239; 1572-882X
• DOI: 10.1007/s10570-013-0056-7

Quaternary ammonium salts and N-halamines are widely used as biocides in antimicrobial coatings, and have been extensively studied over the past two decades. In this work, 5,5-dimethyl-3-(3′-triethoxysilylpropyl)hydantoin (SPH), and 3-(trimethoxysilylpropyl) octadecyl dimethyl ammonium chloride (SPODA) were synthesized and coated onto cotton fibers using a pad-dry process (PD) and the traditional pad-dry-cure process (PDC). The coated cotton swatches were characterized by FT-IR and SEM. The quaternary ammonium salt showed a relatively lower inactivating bacteria efficacy than did the N-halamine compounds. The chlorinated swatches coated with both SPH and SPODA using the PD process could inactivate about 7 logs of the Staphylococci aureus within 5–10 min and 7 logs of Escherichia coli O157:H7 within 10–30 min, respectively. The addition of quats in N-halamine coatings improved antimicrobial activity against Gram-negative bacteria E. coli O157:H7. However, this result was not observed when the PDC process was applied in coatings because of the increasing hydrophobicity of the coated samples under high coating temperature.