纤维素纳米纤维板。
Cellulose nanofiber board.
机构信息
Laboratory of Sustainable Nanomaterials, Department of Wood Engineering and Technology, Gorgan University of Agricultural Sciences and Natural Resources, 4913815739, Gorgan, Iran.
Laboratory of Sustainable Nanomaterials, Department of Wood Engineering and Technology, Gorgan University of Agricultural Sciences and Natural Resources, 4913815739, Gorgan, Iran.
出版信息
Carbohydr Polym. 2018 May 1;187:133-139. doi: 10.1016/j.carbpol.2018.01.081. Epub 2018 Feb 20.
A cellulose nanofiber board (CNF-board) with a nominal thickness of 3 mm was fabricated without adhesive or additive. To provide comparison, a cellulose fiber board (CF-board) was also fabricated. A novel cold pre-press apparatus was made to dewater highly absorbent CNF gel prior to drying. A mild drying condition in the vacuum oven at 70 °C and 0.005 MPa was enough to provide the CNF-board with a density of 1.3 g/cm thanks to its self-densification capability. Unlike the CF-board, the fabricated CNF-board had a high water-activated dimensional recovery ratio (averagely 96%) during the five cyclic wetting-drying process. The flexural and tensile strengths of CNF-board obtained were 162 MPa and 85 MPa, respectively. The corresponding values for CF-board were 28 MPa and 11 MPa, respectively. The specific flexural and tensile strengths of CNF-board obtained were higher than those of CF-board as well as some other traditional wood-based composites, polymers and structural ASTM A36 steel.
一种名义厚度为 3 毫米的纤维素纳米纤维板（CNF 板）是在没有粘合剂或添加剂的情况下制造的。为了进行比较，还制造了一种纤维素纤维板（CF 板）。制作了一种新型的冷预压机，在干燥前对高吸水性 CNF 凝胶进行脱水。由于其自致密化能力，在 70°C 和 0.005 MPa 的真空烘箱中进行温和的干燥条件足以使 CNF 板的密度达到 1.3 g/cm³。与 CF 板不同的是，所制备的 CNF 板在五次湿-干循环过程中具有较高的水激活尺寸恢复率（平均为 96%）。CNF 板的弯曲和拉伸强度分别为 162 MPa 和 85 MPa，而 CF 板的相应值分别为 28 MPa 和 11 MPa。所获得的 CNF 板的比弯曲和拉伸强度高于 CF 板以及其他一些传统的基于木材的复合材料、聚合物和结构 ASTM A36 钢。
Zotero 插件