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首页> 外文期刊>Materials science & engineering >Spectroscopic characterization and antimicrobial activity of nanoparticle doped cyclodextrin polyurethane bionanosponge
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Spectroscopic characterization and antimicrobial activity of nanoparticle doped cyclodextrin polyurethane bionanosponge

机译：纳米粒子掺杂环糊精聚氨酯Bionanosponge的光谱表征及抗微生物活性

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This study reports on the spectroscopic characterization and antimicrobial potency of polyurethane cyclodextrin co-polymerized phosphorylated multiwalled carbon nanotube-doped Ag-TiO2 nanoparticle (pMWCNT-CD/AgTiO2) bionanosponge nanocomposite. The synthesis of pMWCNT-CD/Ag-TiO2 bionanosponge nanocomposite was carried out through the combined processes of amidation and polymerization reactions as well as the sol-gel method. The native nanosponge cyclodextrin and phosphorylated multiwalled carbon nanotube-nanosponge CD (pMWCNT-CD) polyurethanes were also prepared, and their antimicrobial activities carried out for comparison purposes. The synthesized bionanosponge polyurethane materials were characterized using Fourier-transform infrared (FTIR) spectroscopy, Laser Raman spectroscopy, X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS) to give clear information regarding their structural, and dynamic physicochemical properties. The potency tests of the synthesized compounds were carried out against three bacterial strains Escherichia coll., Bacillus subtilis, Staphylococcus aureus, and two fungal representatives Aspergillus ochraceus and Aspergillus fumigants, using the disc diffusion method. Micro dilution and agar plating were used to determine the minimum bactericidal concentration (MBC) and minimum fungicidal concentration (MFC), respectively. The results obtained revealed that pMWCNT-CD/Ag-TiO2 exhibits superior antibacterial and antifungal activities when compared to the other bionanosponge polymers tested. Thus, the bionanosponge polyurethane pMWCNT-CD/AgTiO(2 )nanocomposite can be considered as an active antimicrobial compound (AMC).
机译：该研究报告了聚氨酯环糊精共聚磷酸化多壁碳纳米管掺杂Ag-TiO2纳米粒子（PMWCNT-CD / AgTiO2）BionAnosponge纳米复合材料的光谱表征和抗微生物效力。 PMWCNT-CD / AG-TiO2脱硫纳米复合材料的合成通过酰胺化和聚合反应的组合过程以及溶胶 - 凝胶法进行。还制备了天然纳米末端环糊精和磷酸化的多壁碳纳米管 - 纳米分子Cd（PMWCNT-CD）聚氨酯，并进行了对比较目的的抗微生物活性。合成的生物烷过安聚氨酯材料用傅里叶变换红外（FTIR）光谱，激光拉曼光谱，X射线衍射（XRD）和X射线光电子能谱（XPS）进行了表征，以提供有关其结构和动态物理化学性质的清晰信息。使用盘扩散法，对三种细菌菌株，枯草芽孢杆菌，金黄色葡萄球菌和两种真菌代表和曲霉富霉菌进行了合成化合物的效力试验。微量稀释和琼脂电镀用于确定最小的杀菌浓度（MBC）和最小杀菌浓度（MFC）。得到的结果表明，与测试的其他生物烷过安聚合物相比，PMWCNT-CD / Ag-TiO2表现出优异的抗菌和抗真菌活性。因此，可以将BionAnospOnge聚氨酯PMWCNT-CD / AgTiO（2）纳米复合材料视为活性抗微生物化合物（AMC）。

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