摘要
为了研究醋酸纳米纤维膜的形貌及截滤性能,采用静电纺丝技术制备出纺丝液质量分数分别为11%、13%和15%的纳米纤维膜。利用原子力显微镜(AFM)、扫描电镜(SEM)及相关分析软件分析了不同质量分数纳米纤维膜的直径分布及形态。在实验范围内,醋酸纳米纤维的平均直径为200～900nm,均匀性较好,具有较好的可纺性。同时研究了纺丝液不同质量分数的纳米纤维膜的吸水和滤菌性能,测试结果表明,纳米纤维膜具有优良的滤菌性能,且随着纺丝液质量分数的提高,吸水和滤菌性能均有不同程度的下降,这与纳米纤维直径的变化是一致的。
In order to study the morphology and filter performance of cellulose acetate nanofibers, the electrospinning technology is applied, and the cellulose acetate nanofibers membrane with 11%, 13% and 15% spinning liquid mass fraction are prepared. The diameter-distribution and morphology of nanofibres with different spinning liquid mass fraction are analyzed by scan electric microscope（SEM） ,atomic force microscope（AFM） and related software. Within the framework of the experiment, the average diameter of ellulose acetate nanofibers is between 200nm and 900nm with better uniformity, and have better spinnability. At the same time, the water absorption and filtration properties of bacteria under different spinning liquid mass fraction are also studied. Tests results show that nano-fiber membrane has excellent filter bacteria performance, and with the increase of the mass fraction, the water absorption and filtration properties of bacteria decreases in varying degrees,which is consistent with the variation of nano-fiber diameter.
基金
教育部高等学校博士学科点专项科研基金(20060295005)
生态纺织教育部重点实验室基金(KLET0618)
关键词
醋酸纳米纤维膜
静电纺丝
形貌分析
滤菌性能
cellulose acetate nanofibers membrane, electrostatic spinning, morphology analysis, filtration performance of bacteria
