教授
硕士生导师
教师拼音名称:wangzhaobo
学位:工学博士
职称:教授
学科:材料物理与化学
材料学材料加工工程材料科学与工程其他专业邮箱:
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2019-09-15 山东省优秀教师
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2020-12-10 青岛市高校教学名师
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2019-09-15 青岛市新时代最美劳动者
2020-11-10 山东省大学生高分子实用技术大赛“优秀指导教师”
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关键字:Nanostructured materials;Energy dispersive spectroscopy - Escherichia coli - Microstructure - Polystyrenes - Titanium dioxide - Ultraviolet radiation;Absorbance - Antibacterial effects - High-impact polystyrenes (HIPS) - Melt compounding
摘要:TiO<inf>2</inf> nanoparticles were introduced into High-impact polystyrene (HIPS) in the form of master batch where TiO<inf>2</inf> was pre-dispersed in HIPS by melt compounding. The microstructures and properties of the nanocomposites were investigated. Energy dispersive X-ray spectrometer (EDS) composition distribution maps indicate that TiO<inf>2</inf> nanoparticles are dispersed randomly in the nanocomposites comprising low TiO<inf>2</inf> content (&le2wt.%), while the dispersion is inferior at high TiO<inf>2</inf> content. The variation in the dispersion behavior influences the mechanical properties of nanocomposites. Significantly, the surface of nanocomposites shows a strong absorption of UV light in the wavelength range of 250∼400 nm, an increase in the TiO<inf>2</inf> content of nanocomposites raises the absorbance in the region. HIPS/TiO<inf>2</inf> nanocomposites have a satisfactory antibacterial effect on Escherichia coli(E. coli) and Staphylococcus aureus (S. aureus). © 2005 Springer Science + Business Media, Inc.
卷号:40
期号:24
是否译文:否