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Cellulose

Erschienen in:

01.06.2012

Mechanosorptive creep in nanocellulose materials

verfasst von: Stefan B. Lindström, Erdem Karabulut, Artem Kulachenko, Houssine Sehaqui, Lars Wågberg

Erschienen in: Cellulose | Ausgabe 3/2012

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Abstract

The creep behavior of nanocellulose films and aerogels are studied in a dynamic moisture environment, which is crucial to their performance in packaging applications. For these materials, the creep rate under cyclic humidity conditions exceeds any constant humidity creep rate within the cycling range, a phenomenon known as mechanosorptive creep. By varying the sample thickness and relative humidity ramp rate, it is shown that mechanosorptive creep is not significantly affected by the through-thickness moisture gradient. It is also shown that cellulose nanofibril aerogels with high porosity display the same accelerated creep as films. Microstructures larger than the fibril diameter thus appear to be of secondary importance to mechanosorptive creep in nanocellulose materials, suggesting that the governing mechanism is found between molecular scales and the length-scales of the fibril diameter.

Vorheriger Artikel Elastic properties of cellulose nanopaper

Nächster Artikel Smooth and flexible filler-nanocellulose composite structure for printed electronics applications

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Titel: Mechanosorptive creep in nanocellulose materials
verfasst von: Stefan B. Lindström
Erdem Karabulut
Artem Kulachenko
Houssine Sehaqui
Lars Wågberg
Publikationsdatum: 01.06.2012
Verlag: Springer Netherlands
Erschienen in: Cellulose / Ausgabe 3/2012
Print ISSN: 0969-0239
Elektronische ISSN: 1572-882X
DOI: https://doi.org/10.1007/s10570-012-9665-9

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