AAO模板法制备纤维素纳米纤维

Cellulose Nanofibers Prepared by AAO Templates

研究了以多孔阳极氧化铝(AAO)为模板,采用抽滤法首次制备直径为35nm的纤维素纳米纤维。孔径为300nm的AAO模板采用二步阳极氧化法制备。纤维素溶解在氯化锂/N,N-二甲基乙酰胺(LiCl/DMAc)溶液中,通过抽滤将纤维素溶液注入AAO模板的纳米孔洞中,除去溶剂和AAO模板后得到纤维素纳米纤维。制得的纤维素纳米纤维呈阵列结构排列,在胶粘剂、疏水材料等领域具有潜在的应用价值。

In this paper, cellulose nanofibers with diameter of 35 nm were prepared by vacuum filtration using porous anodic alumina oxide （AAO） template. The AAO template with pore diameter of 300 nm was prepared by a two-step anodic oxidation. After dissolved cellulose in lithium chloride/N,N-dimethylacetamide （LiC1/DMAc）, the cellulose solution was infiltrated into the nanopores of AAO template by vacuum. The cellulose nanofibers were obtained after the removal of solvent and AAO template. The nanofiber array had potential applications in adhesive and superhydrophobic material.