Layered cellulose nanofibers nanocomposites via layer by layer assembling

Fu, Shenyuan and Song, Pingan and Ni, Zhongjin and Wu, Qiang (2012) Layered cellulose nanofibers nanocomposites via layer by layer assembling. Advanced Materials Research, 530. pp. 56-61. ISSN 1022-6680

Abstract

Native cellulose nanofibers with high strength ratio may create an alternative as the blade material for wind power field. In this work, cellulose nanofibers (CN) with high L/D ratio was fabricated by combined biological treatment and mechanical disintegration processes. Then, we created a high-performance cellulose layered nanocomposites via layer by layer (LBL) assembling strategy. Transmission electron microscopy (TEM) observations show that common paper pulp exhibits a nearly spherical or amorphous structure, while as-made cellulose nanofibers displays a high aspect ratio, with a length of ca. 10~100 μm and a diameter of ca. 30~100 nm. However, some relative big fibres bundles are still observed. Mechanical measurements demonstrate that the tensile strength, Young's modulus and elongation at break of layered CN nanocomposites (CNLC) reach 114MPa. 7.0GPa and 68%,respectively, while only 63MPa, 3.3 GPa and 27% for layered common paper pulp composites (PFLC). Flexural tests results show that CNLC gives a flexural strength and modulus of 263 MPa and 19 GPa, while only 114 MPa and 11 GPa for PFLC. Fracture surface observations indicate that though layered structure can be observed for both PFLC and CNLC, much thinner layer and long fibrous structure only exist in CNLC, which results in high mechanical performance.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Files associated with this item cannot be displayed due to copyright restrictions.
Faculty / Department / School: No Faculty
Date Deposited: 30 May 2017 00:11
Last Modified: 29 Nov 2017 00:19
Uncontrolled Keywords: assembling; cellulose fibers; LBL; nanocomposites; amorphous structures
Fields of Research : 10 Technology > 1007 Nanotechnology > 100708 Nanomaterials
Socio-Economic Objective: E Expanding Knowledge > 97 Expanding Knowledge > 970110 Expanding Knowledge in Technology
Identification Number or DOI: 10.4028/www.scientific.net/AMR.530.56
URI: http://eprints.usq.edu.au/id/eprint/31634

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