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N-halamine modified mesoporous silica coated cotton as multipurpose protective fibrous materials

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N-halamine-containing mesoporous silica was prepared by treating the silica with (3-(trimethoxysilyl) propyl methacrylate), followed by grafting reaction of an N-halamine precursor, 3-(3′-hydroxypropyl)-5,5-dimethylhydantoin (APDMH). The resulting N-halamine mesoporous silica was applied to the surface of cotton by a coating process. The coated cotton showed good static and dynamic hydrophobic properties (static contact angle, 138.91°). After soaking in household bleach, N-halamines were formed on the coated fabric, which provided good antimicrobial properties against Gram-positive bacteria, Gram-negative bacteria, and fungi. The chlorinated sample inactivated 98.93% of Staphylococcus epidermidis, 97.83% of Escherichia coli O157:H7 and 82.24% of Candida albicans within 60 min, respectively. The coated and chlorinated samples showed high hydrophobicity toward other water-based liquids such as coffee, cola, green tea and milk. Further, the chlorinated fabric samples degraded ammonia in aqueous solutions. These attractive functions make the new N-halamine mesoporous silica coated cotton fabrics as an excellent candidate of multipurpose functional fibrous materials.

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Acknowledgments

This work is supported by the National First-class Discipline Program of Light Industry Technology and Engineering (LITE2018-21), The Starting Research Fund came from the Anhui Polytechnic University (2019YQQ008), The Project of Jiangsu Science and Technological Innovation Team, and Anhui Province University Natural Science Research: Major Program (KJ2018ZD012). We thank Prof. Yuyu Sun for helpful suggestions.

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Correspondence to Xuehong Ren.

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Wang, Y., Yin, M., Ma, W. et al. N-halamine modified mesoporous silica coated cotton as multipurpose protective fibrous materials. Cellulose 27, 10461–10471 (2020). https://doi.org/10.1007/s10570-020-03475-1

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  • DOI: https://doi.org/10.1007/s10570-020-03475-1

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