Effect of cellulose nanofiber dimensions on sheet forming through filtration

Zhang, Liyuan, Batchelor, Warren, Varanasi, Swambabu, Tsuzuki, Takuya and Wang, Xungai 2012, Effect of cellulose nanofiber dimensions on sheet forming through filtration, Cellulose, vol. 19, no. 2, pp. 561-574.

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Title Effect of cellulose nanofiber dimensions on sheet forming through filtration
Author(s) Zhang, Liyuan
Batchelor, Warren
Varanasi, Swambabu
Tsuzuki, Takuya
Wang, XungaiORCID iD for Wang, Xungai orcid.org/0000-0002-3549-6769
Journal name Cellulose
Volume number 19
Issue number 2
Start page 561
End page 574
Total pages 14
Publisher Springer
Place of publication Amsterdam, The Netherlands
Publication date 2012
ISSN 0969-0239
Keyword(s) cellulose nanofiber
nanofiber length
nanofiber sheets
Summary Four different cellulose nanofibers samples were prepared from northern bleached softwood kraft fibers. Fiber diameter distributions were measured from SEM images. Fiber aspect ratios ranging from 84 to 146 were estimated from fiber suspension sedimentation measurements. Three samples had heterogeneous distributions of fiber diameters, while one sample was more homogeneous. Sheet forming experiments using filters with pores ranging from 150 to 5 μm showed that the samples with a heterogeneous distribution of fiber dimensions could be easily formed into sheets at 0. 2% initial solids concentration with all filter openings. On the other hand, sheets could only be formed from the homogenous sample by using 0. 5% or more initial solids content and a lower applied vacuum and smaller filter openings. The forming data and estimated aspect ratios show reasonable agreement with the predictions of the crowding number and percolation theories for the connectivity and rigidity thresholds for fiber suspensions.
Language eng
Field of Research 091210 Timber, Pulp and Paper
100708 Nanomaterials
Socio Economic Objective 860503 Pulp and Paper
HERDC Research category C1 Refereed article in a scholarly journal
Copyright notice ©2011, Springer
Persistent URL http://hdl.handle.net/10536/DRO/DU:30044344

Document type: Journal Article
Collections: Centre for Material and Fibre Innovation
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