采用化学法并结合机械法,制得了形貌尺寸均匀的生物质纤维素微纳米纤丝,并将其制备成膜,观察了其微观结构, 测试了纳米纤维素膜的相关性能。 结果表明:废弃牛皮纸和瓦楞纸经过处理,可以制得纳米微晶纤维素,直径为 30 ~ 100 nm;同时再生膜具有较高的强度,牛皮纸和瓦楞纸的拉伸强度分别为 107. 4,121. 81MPa,弹性模量分别为 5. 6,5. 2 GPa,纳米纤维素膜的拉伸强度分别是牛皮和瓦楞原纸的 5 倍和 8 倍;对 2 种废弃材料进行均质和离心处理,可以显著提高其性能。

We obtained biomass cellulose micro / nano fiber with uniform dimension using chemical and mechanical methods and prepared film, then observed their microscopic structure and tested performance of the nanofiber films. The results showed that cellulose nanofibers can be obtained after processing, with the diameter between 30 nm and 100 nm, and the nanofiber films exhibits higher strength; the tensile strength of the kraft paper and the corrugated paper are 107. 4 MPa and 121. 8 MPa; their elastic modulus are 5. 6 GPa and 5. 2 GPa respectively. Meanwhile, tensile strength of the nanofiber films is 5 times and 8 times higher than that of the base paper. It also demonstrated that homogeneous and centrifugal treatment can increase performance of the material significantly.