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Antimicrobial finishing of regular and modified nylon‐6 fabrics
Author(s) -
Shalaby S. E.,
ALBalakocy N. G.,
AbdelFatah O. M.,
Elshafei A. M.
Publication year - 2008
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.28628
Subject(s) - grafting , nylon 6 , antimicrobial , ammonium chloride , methacrylic acid , materials science , nuclear chemistry , chemistry , cationic polymerization , polymer chemistry , organic chemistry , composite material , monomer , polymer
A simple, efficient, and practically applicable functional approach for improvement antimicrobial properties of nylon‐6 fabrics and increase the washing durability of biofunctions was developed. This finishing approach is based on grafting of the fabrics with methacrylic acid (MAA) to create additional carboxylic groups in nylon‐6 macromolecules, followed by subsequent reaction with dimethylalklbenzyl ammonium chloride (DMABAC) solution under alkaline conditions. The carboxylic groups react with cationic agent through ionic interaction, which led to the immobilization of QAS on nylon‐6 fabrics. This immobilization was proofed through determination of nitrogen content, applying scanning electron microscopy (SEM), and FTIR microscopy. The effect of treatment conditions on salt uptake (SUT) on nylon‐6 fabrics and reaction efficiency (RE) was investigated. The antimicrobial assessment of regular and grafted with PMAA nylon‐6 fabrics treated with DMABAC revealed that both types of fabrics are characterized before washing, by quite strong biocide effect on Bacillus mycoides , Escherichia coli and Candida albicans . The role of grafting nylon‐6 fabrics before treatment with salt on durability of antimicrobial functions seems to be more significant as the samples were repeatedly washed. Even after Laundring 10 times the grafted samples could still provide 80%, 100%, and 87.5% microbial reduction against B. mycoides , E. coli and C. albicans , respectively, in contrast with 42.6%, 65.6%, and 42.5% in case of regular nylon‐6 fabrics. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2008.