极限抗拉强度
材料科学
复合材料
抗撕裂性
机械强度
剪切(物理)
纤维素
软木
化学工程
工程类
作者
Elyas Afra,Hossein Yousefi,Mohamad Mahdi Hadilam,Takashi Nishino
标识
DOI:10.1016/j.carbpol.2013.05.032
摘要
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.
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