Preparation and characterization of tree-like cellulose nanofiber membranes via the electrospinning method

A novel tree-like cellulose nanofiber membrane was controllably fabricated via the electrospinning method by adding certain amount of tetra butyl ammonium chloride (TBAC) into the cellulose acetate solution followed by a deacetylation treatment process. The morphological structure, material structure and air filtration performance of both the cellulose and the cellulose acetate tree-like nanofiber membranes were characterized. Water contact angles, mechanical properties, and air filtration properties were also evaluated. The air filtration efficiency of cellulose acetate tree-like nanofiber membrane can reached 99.58%, and the eventually cellulose tree-like membrane still maintain 98.37%. The eventual cellulose tree-like nanofiber membranes exhibited small pore size, excellent hydrophilicity, good solvent resistance and preferable mechanical property. The small average pore size caused by the tree-like structure and the strong resistance to organic solvent can make it a potential candidate for the membrane separation.

通过将一定量的氯化四丁铵（TBAC）添加到醋酸纤维素溶液中，然后进行脱乙酰化处理工艺，我们用静电纺丝法可控地制备了一种新型的树状纤维素纳米纤维膜。报告了纤维素和醋酸纤维素树状纳米纤维膜的形态结构，材料结构和空气过滤性能。还评估了水接触角，机械性能和空气过滤性能。醋酸纤维素树状纳米纤维膜的空气过滤效率可达到99.58％，最终纤维素树状膜仍保持98.37％。最终的纤维素树状纳米纤维膜表现出小孔径，优异的亲水性，良好的耐溶剂性和优选的机械性能。由树状结构引起的小平均孔径以及其对有机溶剂的强抵抗力使其成为膜分离的潜在候选者。

Published: 2018

Journal ：CARBOHYDRATE POLYMERS

Impact Factor：7.641

Paper link: https://www.sciencedirect.com/science/article/abs/pii/S0144861717313085