Department of Pulp and Paper Technology, Gorgan University of Agricultural Sciences and Natural Resources, 4913815739, Gorgan, Iran.
Carbohydr Polym. 2013 Sep 12;97(2):725-30. doi: 10.1016/j.carbpol.2013.05.032. Epub 2013 May 23.
Cellulose fibers were fibrillated using mechanical beating (shearing refiner) and ultra-fine friction grinder, respectively. The fibrillated fibers were then used to make paper. Mechanical beating process created a partial skin fibrillation, while grinding turned fiber from micro to nanoscale through nanofibrillation mechanism. The partially fibrillated and nano fibrillated fibers had significant effects on paper density, tear strength, tensile strength and water drainage time. The effect of nanofibrillation on paper properties was quantitatively higher than that of mechanical beating. Paper sheets from nanofibrillated cellulose have a higher density, higher tensile strength and lower tear strength compared to those subjected to mechanical beating. Mechanical beating and nanofibrillation were both found to be promising fiber structural modifications. Long water drainage time was an important drawback of both fibrillation methods.
纤维素纤维分别采用机械打浆（剪切精浆机）和超微摩擦粉碎机进行原纤化处理。原纤化纤维随后用于造纸。机械打浆过程会产生部分皮层原纤化，而研磨则通过纳米原纤化机制将纤维从微观变为纳米尺度。部分原纤化和纳米原纤化纤维对纸张密度、撕裂强度、拉伸强度和排水时间有显著影响。纳米原纤化对纸张性能的影响定量上高于机械打浆。与机械打浆相比，纳米原纤化纤维素制成的纸页具有更高的密度、更高的拉伸强度和更低的撕裂强度。机械打浆和纳米原纤化都被发现是有前途的纤维结构改性方法。较长的排水时间是这两种原纤化方法的一个重要缺点。
