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Comparison of fracture properties of cellulose nanopaper, printing paper and buckypaper
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2017 (engelsk)Inngår i: Journal of Materials Science, ISSN 0022-2461, E-ISSN 1573-4803, Vol. 52, nr 16, s. 9508-9519Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Cellulose nanopaper consists of a dense fibrous self-binding network composed of cellulose nanofibres connected by physical entanglements, hydrogen bonding, etc. Compared with conventional printing paper, cellulose nanopaper has higher strength and modulus because of stronger fibres and inter-fibre bonding. The aim of this paper is to investigate the fracture properties of cellulose nanopaper using double edge notch tensile tests on samples with different notch lengths. It was found that strength is insensitive to notch length. A cohesive zone model was used to describe the fracture behaviour of notched cellulose nanopaper. Fracture energy was extracted from the cohesive zone model and divided into an energy component consumed by damage in the material and a component related to pull-out or bridging of nanofibres between crack surfaces which was not facilitated due to the limited fibre lengths for the case of nanopapers. For comparison, printing paper which has longer fibres than nanopaper was tested and modelled to demonstrate the importance of fibre length. Buckypaper, a fibrous network made of carbon nanotubes connected through van der Waals forces and physical entanglements, was also investigated to elaborate on the influence of inter-fibre connections.

sted, utgiver, år, opplag, sider
Springer, 2017. Vol. 52, nr 16, s. 9508-9519
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URN: urn:nbn:se:kth:diva-210453DOI: 10.1007/s10853-017-1108-4ISI: 000402560600024Scopus ID: 2-s2.0-85018282634OAI: oai:DiVA.org:kth-210453DiVA, id: diva2:1120603
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QC 20170706

Tilgjengelig fra: 2017-07-06 Laget: 2017-07-06 Sist oppdatert: 2017-07-06bibliografisk kontrollert

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