Rapid preparation of cellulose nanofibre sheet
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Cellulose nanofibre sheet materials are of great interest in various applications because of their excellent properties, but are difficult to prepare rapidly and as large sheets. This paper describes a quick preparation procedure for preparing optically transparent, flat and smooth nanofibre sheets, which is much quicker than existing methods. Low permeability, optical transparency, high strength and high density show that nanofibres were well dispersed. The preparation time for the nanofibre sheet produced here was 10 min whereas the preparation times reported in literature is above 1 h. The decrease in sheet preparation time suggests that this method can be used for commercial applications.
KeywordsDimensions Filtration time Rapid preparation Solids concentration Solids retention
The authors thank Liyuan Zhang for helping us to develop the method for separating nanofibres from the Daicel sample. We would like to thank Liyuan Zhang, Sigappi Narayanan and Scot Sharman, for experimental assistance. We acknowledge the financial support of the Australian Research Council, Australian Paper, Nopco Australasia, Norske Skog, SCA Hygiene Australasia and Visy through Linkage Project Grants LP0989823 and LP0990526. Swambabu Varanasi thanks Monash University for a MGS and FEIPRS Scholarship. The authors would like to acknowledge the facilities used with the Monash Center for Electron Microscopy.
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