花瓣状氧化锌纳米片在聚丙烯泡沫中的抗菌性能研究
Study on antibacterial performance of petal-like ZnO nanosheets in polypropylene foams
解爱华 1陈代金 1张婵 1王晴 1孟凡晋 2董学卫 2王一明 1汪爱丽1
作者信息
- 1. 济宁职业技术学院汽车工程系,山东 济宁 272037
- 2. 济宁职业技术学院生物与化学工程系,山东 济宁 272037
- 折叠
摘要
采用硝酸锌与氢氧化钾在十二烷基三甲基溴化铵存在的条件下,在溶液中直接沉淀得到花瓣状氧化锌纳米片,并对比了花瓣状氧化锌纳米片与常规纳米氧化锌在聚丙烯泡沫中的抗菌性能.结果表明,由于具有交错的三维结构,花瓣状氧化锌纳米片较常规纳米氧化锌比表面积高59.6%,堆积密度达到0.23 g/cm3.花瓣状氧化锌纳米片在聚丙烯泡沫中表现出较常规纳米氧化锌更高的抗菌效率.当含量为3%时,添加花瓣状氧化锌纳米片的聚丙烯泡沫对金黄色葡萄球菌和大肠杆菌的抗菌率均达到99.9%.这可能是由于花瓣状的纳米片结构在复合材料加工过程中更容易被充分分散,从而发挥了优异的抗菌性能.
Abstract
Nano-ZnO is a type of inorganic antibacterial material with low cost,high safety,and long-term stability and has received wide attention in polymer composites.The dispersion state of nano-ZnO in the polymer matrix is an impor-tant factor affecting its antibacterial performance.In this study,Zn(NO3)2 and KOH were directly precipitated in the presence of dodecyl trimethyl ammonium bromide to obtain petal-shaped ZnO nanosheets(PS-ZnO).The antibacterial performance of PS-ZnO and conventional nano-ZnO in polypropylene(PP)foams were compared.The results indicated that PS-ZnO exhibited a specific surface area of 59.6%,which is larger than that of conventional nano-ZnO due to the staggered three-dimensional microstructure,and its packing density also reached 0.23 g/cm3.PS-ZnO presented higher antibacterial efficiency than conventional nano-ZnO in the PP foams.The PP foam containing 3 wt.%PS-ZnO obtained an antibacterial rate of 99.9%against Staphylococcus aureus and Escherichia coli.This might be due to the fact that the petal-shaped structure made PS-ZnO more easily dispersed in the PP matrix,thus generating an excellent antibacterial ef-fect.
关键词
氧化锌纳米片/花瓣状/聚丙烯/泡沫/抗菌性能Key words
ZnO nanosheet/petal-shape/polypropylene/foam/antibacterial property引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据