天津工业大学学报2025，Vol.44Issue(5)：1-7,7.DOI:10.3969/j.issn.1671-024x.2025.05.001
聚乳酸纳微米发光纤维膜的油水分离性能
Oil-water separation performance of polylactic acid nano-micron luminescent fiber membrane
摘要
Abstract
In order to optimize the oil-water separation process and improve the efficiency of oil-water separation,based on the excellent processability and biodegradability of polylactic acid(PLA),combined with the photoluminescence function of organic rare earth luminescent materials,PLA was used as fiber forming polymer,and PLA nano-mi-cron fiber membranes with oil-water separation and fluorescence indication functions were successfully prepared through electrospinning technology.The surface morphology of PLA nano-micron luminescent fiber membranes was analyzed via SEM images.The oil-water separation function of PLA nano-micron luminescent fiber mem-branes was studied using different oil-water mixing systems.The results show that the as-prepared PLA nano-micron luminescent fiber membranes have smooth surface,uniform diameter and average diameter of 550 nm.The distribution maps of different elements on the surface of PLA nano-micron luminescent fiber membranes prove that the organic rare earth luminescent materials are uniformly distributed on the surface of PLA nano-mi-cron luminescent fiber membranes,and no obvious aggregation occurs.The PLA nano-micron luminescent fiber membranes have good hydrophobic and oleophilic properties.In the oil adsorption experiment,the adsorption capacity of the prepared PLA nano-micron fiber membranes for vacuum pump oil,silicone oil,edible oil,petroleum ether and n-hexane reaches 26.7,24.3,21.4,11.1,and 9.7 g/g,respectively.The fluxes of vacuum pump oil,silicone oil,edible oil,petroleum ether,and n-hexane in the oil-water separation process are 727,874,994,40000,and 72727 L/(m2·h),respectively.After 20 times of recycling,the oil adsorption capacity of the membrane is still 78.5%of the value of the first time of oil absorption,and the flux is still 95.4%of the value of the first time of oil-water separation.The PLA nano-micron luminescent fiber membranes have a good fluores-cence indicator,and the distribution of oil droplets on the fiber membrane can be understood.After 20 cycles of use,the fluorescence intensity only de-creased by 18.6%compared to the original fluorescence intensity.关键词
聚乳酸/静电纺/油水分离/纳微米发光纤维膜/荧光强度Key words
polylactic acid(PLA)/electrostatic spinning/oil-water separation/nano-micron luminescent fibers mem-brance/fluorescence intensity分类
轻工业引用本文复制引用
西鹏,牛泽祺..聚乳酸纳微米发光纤维膜的油水分离性能[J].天津工业大学学报,2025,44(5):1-7,7.基金项目
国家自然科学基金项目(51873152) （51873152）
