微纤化纤维素(microfibrillated cellulose,MFC)是一种具有纳米尺度的新型纤维素纤维,具有极为广阔的应用前景.但工业化MFC产品存在尺寸分布和纤丝化程度不均一的问题,从而影响其使用.本文采用PFI磨解的方法对MFC进行后处理,结果表明:PFI磨解可显著提高MFC的均一性,磨解转数为20000转时,小于200μm的组分含量可达到92.3%,纤维平均长度为42μm.MFC经PFI后处理可制备出具有更高性能的纸基材料,在磨解转数为60000转时,紧度可提高66.13%,透明度可提高40.26%,吸收性下降45.83%.撕裂指数最高增幅为268.03%(10000转),抗张指数可提高90.41%(20000转).
Microfibrillated Cellulose (MFC),a kind of new cellulose fiber material with one dimensional nanom-eter,shows a good application future.Nevertheless,there are problems with the size distribution and the degree of fibril homogeneity of industrialized MFC products,which influence its utilization.The PFI refining was ap-plied for MFC to post-treatment in this study.The results showed that the uniformity of MFC was significantly improved by PFI refining,the component with the length less than 200μm can reach to 92.3% and the average length was 42μm when the revolution of PFI was 20000r.Higher performance of paper-based materials can be prepared by post-processing MFC with PFI refining,the tightness and transparency of paper-based materials can be increased by 66.13% and 40.26%,respectively,the absorbency can be declined by 45.83% with the revo-lution of 60000r.The highest growth of tear and tensile index can be increased by 268.03% (10000r)and 90.41% (20000r),respectively.
参考文献
| [1] | Anna J.Svagan;My A.S.Azizi Samir;Lars A.Berglund.Biomimetic Polysaccharide Nanocomposites of High Cellulose Content and High Toughness[J].Biomacromolecules,20078(8):2556-2563. |
| [2] | 江泽慧;王汉坤;余雁;田根林;王昊.植物源微纤化纤维素的制备及性能研究进展[J].世界林业研究,2012(2):46-50. |
| [3] | 欧阳昌礼;吴芹;王广河;宋海农.纳米微纤化纤维素在纸张增强与涂布中的应用[J].中国造纸学报,2011(4):1-4. |
| [4] | Henriksson M;Henriksson G;Berglund LA;Lindstrom T.An environmentally friendly method for enzyme-assisted preparation of microfibrillated cellulose (MFC) nanofibers[J].European Polymer Journal,20078(8):3434-3441. |
| [5] | Kentaro Abe;Hiroyuki Yano.Formation of hydrogels from cellulose nanofibers[J].Carbohydrate Polymers: Scientific and Technological Aspects of Industrially Important Polysaccharides,20114(4):733-737. |
| [6] | Penttil?, A.;Siev?nen, J.;Torvinen, K.;Ojanper?, K.;Ketoja, J.A..Filler-nanocellulose substrate for printed electronics: Experiments and model approach to structure and conductivity[J].Cellulose,20133(3):1413-1424. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%