N-halamine/pyridinium-derivatized magnetic sub-microparticles with synergetic biocidal properties 机翻标题: 暂无翻译,请尝试点击翻译按钮。

来源
Applied Surface Science: A Journal Devoted to the Properties of Interfaces in Relation to the Synthesis and Behaviour of Materials
年/卷/期
2019 / 467/468 / Feb.15
页码
526-533
ISSN号
0169-4332
作者单位
Shandong Univ Sci & Technol, Analyt & Testing Ctr, Sch Mat Sci & Engn, Qingdao 266590, Peoples R China;Shandong Univ Sci & Technol, Dept Biol Engn, Coll Chem & Environm Engn, Qingdao 266590, Peoples R China;Shandong Univ Sci & Technol, Coll Chem & Environm Engn, Dept Appl Chem, Qingdao 266590, Peoples R China;
作者
Chen, Yong;Feng, Chunyan;Zhang, Qiang;Ren, Guoyuan;Han, Qiuxia;
摘要
Dual biocidal groups of N-halamine and pyridinium were used to modify surface of magnetic sub-microparticles to exert enhanced synergistic antibacterial capacity. Magnetic silica Fe3O4 sub-microparticles (SMPs) were synthesized and then encapsulated with interpenetrating polymer network (IPN) of polystyrene (PS) and poly (acrylic acid) (PAA). The carboxylic acid groups of PAA were used as surface reactive sites to bond with amino groups of 4-aminopyridine through amidation reaction. N-halamine/pyridinium-derivatized magnetic sub-microparticles were sequentially produced by quaternization of the pyridine to pyridinium with 1-chlorohexane and chlorination of amide N-H to N-halamine with NaClO. The synthetic steps and products were characterized with Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and X-ray photoelectron spectrocsopy (XPS). The N-halamine/pyridinium-derivatized SMPs with dual biocidal functionalities showed faster deactivation abilities against both Escherichia coll. and Staphylococcus aureus compared with their counterparts that contained only N-halamine or pyridinium, and exhibited promising stability toward repeated washing and long-term storage. The designed SMPs in this study offer potential and ideal candidates for sterilization application due to multiple advantages including improved synergistic biocidal ability, high surface area, and easy recyclability.
机翻摘要
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关键词/主题词
N-halamine/pyridinium;Antibacterial surface;Recyclability;Synergistic effect;
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