N -halamine modified mesoporous silica coated cotton as multipurpose protective fibrous materials
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ORIGINAL RESEARCH
N-halamine modified mesoporous silica coated cotton as multipurpose protective fibrous materials Yingfeng Wang . Maoli Yin . Wei Ma . Zhiguang Li . Zhenzhen Xu . Xuehong Ren
Received: 14 March 2020 / Accepted: 19 September 2020 Ó Springer Nature B.V. 2020
Abstract 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-(30 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.
Y. Wang Z. Xu College of Textiles and Garments, Anhui Polytechnic University, Wuhu 241000, China Y. Wang M. Yin W. Ma Z. Li X. Ren (&) Key Laboratory of Eco-Textiles of Ministry of Education, College of Textile Science and Engineering, Jiangnan University, Wuxi 214122, Jiangsu, China e-mail: [email protected]
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Cellulose
Graphic abstract
Keywords N-halamine Mesoporous silica Cotton Ammonia Antimicrobial
Introduction Ammonia is one of the major nitrogen-containing pollutants, which may increase the eutrophication and algal growth in aquatic ecosystems (Feng et al. 2003). It also is an irritant to human nose and throat even at low levels of concentration. High levels of ammonia (above 300 ppm) are life-threatening. In order to reduce the pollution of ammonia in water and the atmosphere, the European environmental agency and other local environmental authorities have encouraged research to develop methods and materials for the removal of ammonia. The emission of ammonia is usually from industrial, agricultural, and domestic wastewater. Particularly, about 80% of the total ammonia emissions from agricultural effluent are contributed by slurry store and barns (Karri et al. 2018; Mendes et al. 2017; Viguria et al. 2015). For agricultural workers, skin or respiratory system exposure to ammonia is a major occupational hazard. Protective clothing and air masks are required in working areas with high levels of ammonia. Nevertheless, the current products only sorb/physical trap ammonia, but cannot chemically de
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