林业工程学报2025，Vol.10Issue(2)：79-87,9.DOI:10.13360/j.issn.2096-1359.202404042
膨润土负载ZnO-艾纳香精油在腻子中的抗菌性能
Antibacterial properties of bentonite-loaded ZnO-Blumea balsamifera essential oil in putty
摘要
Abstract
The concepts of health and environmental protection are gaining popularity among the public,leading to widespread interest in building materials with antibacterial properties.From the perspective of materials and functions,it is not only necessary to study natural and environmentally friendly materials,but also to develop materials with antibacterial and purification functions.To reduce microbial contamination in indoor environments,a loaded inorganic-natural composite antibacterial agent and antibacterial putty with efficient antibacterial and long-term slow-release effects were fabricated.Bentonite-loaded ZnO-BBO composite antibacterial agent(ZnO/OBt-BBO)was synthesized by loading ZnO and Blumea balsamifera essential oil(BBO)onto bentonite(Bt)using hydrothermal and vacuum impregnation methods.Then the antibacterial agent was mixed with putty powder to form antibacterial putty.Using the UV spectrophotometer,the loading amount of essential oil was measured.Utilizing SEM and a laser particle size distribution tester,the microstructure and particle size of the clay were observed.Using TG,the thermal stability of the antibacterial samples was examined.Utilizing a pull-out test machine,the bonding strength of antibacterial putty was measured.The antibacterial performance of composite antibacterial agents and antibacterial putty were examined using the antibacterial circles and veneer methods.The results showed that the interlayer spacing of Bt increased after the organic modification,and the ZnO particles were successfully adhered to the interior and surface of the clay.The essential oil adsorption capacity of Bt-BBO was 18.6%,and ZnO/OBt-BBO was 56.3%,which was 85.2%higher than Bt-BBO.The volatilization of the essential oil was 15.7%after 1 000 cycles.The antibacterial rate of ZnO/OBt-BBO against Escherichia coli and Staphylococcus aureus increased by 71.3%and 42.0%,respectively.The minimum inhibitory concentration(MIC)of ZnO/OBt-BBO against E.coli and S.aureus was 2.5 and 5.0 mg/mL,respectively.The bonding performance of the antibacterial putty showed a trend of first increasing and then decreasing as the amount of ZnO/OBt-BBO added increased.When the addition amount was 1.0%,the bonding strength was 0.56 MPa,which was 3.7%higher than the original putty.The antibacterial putty showed good antibacterial performance when the amount of antibacterial rate was greater than 2.0%.The antibacterial rate of antibacterial putty against E.coli and S.aureus was 99.9%,and still not less than 99.0%after 120 d.The prepared composite antibacterial agent and composite antibacterial putty demonstrated excellent antibacterial performance and a long-term slow-release effect,effectively improving the indoor environment and enhancing the high-value utilization of building materials.关键词
艾纳香精油(BBO)/ZnO/复合抗菌剂/膨润土/抗菌腻子/抗菌性能Key words
Blumea balsamifera essential oil(BBO)/ZnO/antibacterial agents/bentonite(Bt)/antibacterial putty/antibacterial property分类
通用工业技术引用本文复制引用
赵俊淇,杨正波,韩利平,郭洪武..膨润土负载ZnO-艾纳香精油在腻子中的抗菌性能[J].林业工程学报,2025,10(2):79-87,9.基金项目
科技部国家木竹产业基础创新战略联盟项目(TIAWBI2021). （TIAWBI2021）
