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Cellulose Nanofiber...
Cellulose Nanofiber Orientation in Nanopaper and Nanocomposites by Cold Drawing
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- Sehaqui, Houssine (author)
- KTH,Fiber- och polymerteknologi
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- Mushi, Ngesa Ezekiel (author)
- KTH,Fiber- och polymerteknologi
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- Morimune, Seira (author)
- KTH,Wallenberg Wood Science Center
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- Salajkova, Michaela (author)
- KTH,Wallenberg Wood Science Center
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Nishino, Takashi (author)
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- Berglund, Lars A. (author)
- KTH,Fiber- och polymerteknologi,Wallenberg Wood Science Center
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(creator_code:org_t)
- 2012-02-01
- 2012
- English.
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In: ACS Applied Materials and Interfaces. - : American Chemical Society (ACS). - 1944-8244 .- 1944-8252. ; 4:2, s. 1043-1049
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- To exploit the mechanical potential of native cellulose fibrils, we report on the preparation of nanopaper with preferred orientation of nanofibrillated cellulose (TEMPO-NFC) by cold drawing. The preparation route is papermaking-like and includes vacuum filtering of a TEMPO-oxidated NFC water dispersion, drawing in wet state and drying. The orientation of the fibrils in the nanopaper was assessed by AFM and wide-angle Xray diffraction analysis, and the effect on mechanical properties of the resulting nanopaper structure was investigated by tensile tests. At high. draw ratio, the degree of orientation is as high as 82 and 89% in and cross-sectional planes of the nanopaper, respectively, and the Young's modulus is 33 GPa. This is much higher than mechanical properties of isotropic nanopaper. The cold drawing method can be also applied to NFC nanocomposites as demonstrated, by preparation of TEMPO-NFC/hydroxyethyl cellulose (HEC) nanocomposites. The introduction of the soft HEC matrix allows further tailoring of the mechanical properties.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Kemiteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Chemical Engineering (hsv//eng)
Keyword
- nanopaper
- cellulose nanofibers
- orientation
- cold drawing
- nanocomposites
- nanofibrillated cellulose
Publication and Content Type
- ref (subject category)
- art (subject category)
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