摘要
为抑制细菌对皮革文物的侵蚀,延长皮革文物存放寿命,以纳米TiO_(2)、γ-缩水甘油醚氧丙基三甲氧基硅烷(KH560)和聚醚胺(M2070)为原料,制备了共价型TiO_(2)纳米类流体(C-TiO_(2)nfs);以纳米TiO_(2)、二甲基十八烷基[3-(三甲氧基硅基)丙基]氯化铵(DC5700)和壬基酚聚氧乙烯醚硫酸钠(NPES)为原料,制备了离子型TiO_(2)纳米类流体(I-TiO_(2)nfs)。采用循环刷涂法将两种TiO_(2)纳米类流体(TiO_(2)nfs)应用于老化皮革的保护。通过FTIR、TEM、流变仪对TiO_(2)nfs进行了表征,采用数码相机、测色配色分光光度计、伺服控制高低温拉力试验机、紫外-可见-近红外分光光度计对老化皮革的性能进行了检测,并考察了其长期稳定性。结果表明,C-TiO_(2)nsf和I-TiO_(2)nfs均为白色液体,在室温下具有较好的流动性,且C-TiO_(2)nfs流动性更好;经TiO_(2)nfs处理后,老化皮革的颜色和结构无明显变化,而力学性能、抗紫外性能和抗菌性能均得到提升,并且处理后的皮革具有长期稳定性。C-TiO_(2)nfs处理后的老化皮革对大肠杆菌(E.coli)和金黄色葡萄球菌(S.aureus)的抑菌率分别达61.3%和69.9%;I-TiO_(2)nfs处理的老化皮革则具有更好的柔软度、力学性能和抗菌性,处理后老化皮革的柔软度、抗张强度和断裂伸长率分别可达3.32 mm、17.32 MPa和81.71%,对E.coli和S.aureus的抑菌率分别可达97.0%和98.2%。
To inhibit bacterial corrosion on leather artifacts and extend their storage lifespan,covalent TiO_(2)nanofluids(C-TiO_(2)nfs)were prepared using nano-TiO_(2),γ-glycidyl ether oxypropyl trimethoxy-silane(KH560)and polyether amine(M2070)as raw materials,while ionic TiO_(2)nanofluids(I-TiO_(2)nfs)were prepared using nano-TiO_(2),dimethyloctadecyl[3-(trimethoxysilyl)propyl]ammonium chloride(DC5700)and sodium nonylphenol polyoxyethylene ether sulfate(NPES).Both TiO_(2)nfs were characterized by FTIR,TEM,as well as rheometer,and applied to aged leather via cyclic brushing method.The aged leather after TiO_(2)nfs treatment were analyzed by digital camera,color matching spectrophotometer,servo controlled high and low temperature tensile testing machine,and ultraviolet-vision-near-infrared spectrophotometer,with its long-term stability also evaluated.The results showed that both C-TiO_(2)nfs and I-TiO_(2)nfs were white liquids with good fluidity at room temperature,with C-TiO_(2)nfs exhibiting better fluidity.After TiO_(2)nfs treatment,the color and structure of aged leather remained unchanged,while its mechanical properties,UV resistance,and antibacterial performance improved significantly,demonstrating long-term stability.The aged leather treated by C-TiO_(2)nfs achieved inhibition rates of 61.3%and 69.9%against E.coli and S.aureus,respectively.The aged leather treated by I-TiO_(2)nfs exhibited superior softness,mechanical properties,and antibacterial performance,with softness,tensile strength,and elongation at break reaching 3.32 mm,17.32 MPa,and 81.71%,respectively.The inhibition rates against E.coli and S.aureus achieved 97.0%and 98.2%,respectively.
作者
高党鸽
王鑫炜
左童
周松峦
吕斌
GAO Dangge;WANG Xinwei;ZUO Tong;ZHOU Songluan;LYU Bin(College of Bioresources Chemistry and Materials Engineering,Shaanxi University of Science&Technology,Xi'an 710021,Shaanxi,China;National Demonstration Center for Experimental Light Chemistry Engineering Education,Shaanxi University of Science&Technology,Xi'an 710021,Shaanxi,China;Xi'an Key Laboratory of Green Chemicals and Functional Materials,Xi'an 710021,Shaanxi,China;Hubei Provincial Museum,Wuhan 430077,Hubei,China)
出处
《精细化工》
北大核心
2025年第9期1924-1932,2070,共10页
Fine Chemicals
基金
国家自然科学基金项目(22478233)
陕西省自然科学基础研究计划重点项目(专项支持)(2023JC-XJ-12)
陕西省三秦英才特殊支持计划科技创新领军人才项目。
关键词
纳米二氧化钛
纳米类流体
皮革文物
文物保护
抗菌性
功能材料
nano titanium dioxide
nanofluids
leather artifacts
artifacts conservation
antibacterial property
functional materials
作者简介
高党鸽(1982-),女,教授,E-mail:dangge2000@126.com;联系人:吕斌(1980-),男,教授,E-mail:xianyanglvbin@163.com。
