Polylactic acid (PLA) fibrous membrane (PFM) was prepared through solution blow spinning (SBS). The effects of spinning parameters (solution concentration, gas pressure, and spinning distance) on the fiber diameter were studied by response surface methodology. The optimized preparation conditions of PFM were the concentration of PLA solution 8%, gas pressure 0.2 MPa, spinning distance 12 cm. Under the optimized conditions, the average diameter of PLA fibers was 770.45 nm. The oil saturated adsorption capacity of PFM to crude oil, peanut oil and diesel oil was up to 32.28 g/g, 28.80 g/g, and 19.50 g/g, respectively, while that of the commercialized nonwoven polypropylene was only 9.34 g/g, 9.17 g/g, 7.79 g/g, respectively. The adsorption capacity remained at about 50% of the saturated adsorption capacity after 10 cycles of reuse. Similar membrane was also successfully prepared from a waste PLA lid through SBS, which expressed similar oil adsorption behavior with PFM. SBS is potential to deal with the pollutions from waste oil and waste plastic.

通过溶液吹纺（SBS）制备聚乳酸（PLA）纤维膜（PFM）。通过响应面法研究了纺丝参数（溶液浓度，气压和纺丝距离）对纤维直径的影响。PFM的最佳制备条件为：PLA溶液浓度为8％，气压为0.2 MPa，纺丝距离为12 cm。在优化条件下，PLA纤维的平均直径为770.45 nm。PFM对原油，花生油和柴油的油饱和吸附能力分别高达32.28 g / g，28.80 g / g和19.50 g / g，而商业化的非织造聚丙烯仅为9.34 g / g分别为9.17 g / g，7.79 g / g。在重复使用10个循环后，吸附容量保持在饱和吸附容量的约50％。还可以通过SBS从废弃的PLA盖上成功制备出类似的膜，该膜表现出与PFM相似的吸油性能。SBS具有处理废油和废塑料造成的污染的潜力。