Department of Fibre and Polymer Technology, Royal Institute of Technology, SE-100 44 Stockholm, Sweden.
Biomacromolecules. 2010 Sep 13;11(9):2195-8. doi: 10.1021/bm100490s.
Nanostructured materials are difficult to prepare rapidly and as large structures. The present study is thus significant because a rapid preparation procedure for large, flat, smooth, and optically transparent cellulose nanopaper structures is developed using a semiautomatic sheet former. Cellulose/inorganic hybrid nanopaper is also produced. The preparation procedure is compared with other approaches, and the nanopaper structures are tested in uniaxial tensile tests. Optical transparency and high tensile strength are demonstrated in 200 mm diameter nanopaper sheets, indicating well-dispersed nanofibrils. The preparation time is 1 h for a typical nanopaper thickness of 60 μm. In addition, the application of the nanopaper-making strategy to cellulose/inorganic hybrids demonstrates the potential for "green" processing of new types of nanostructured functional materials.
纳米结构材料难以快速制备成大尺寸结构。因此，本研究具有重要意义，因为采用半自动抄片机制备了大尺寸、平整、光滑和光学透明的纤维素纳米纸结构的快速制备方法。同时还制备了纤维素/无机杂化纳米纸。将该制备方法与其他方法进行了比较，并对纳米纸结构进行了单轴拉伸试验。在直径 200mm 的纳米纸中展示了高透光率和高强度，表明纳米纤维分散良好。典型的 60μm 纳米纸厚度的制备时间为 1 小时。此外，将纳米纸制备策略应用于纤维素/无机杂化材料，展示了“绿色”处理新型纳米结构功能材料的潜力。
