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Cross-Sections of N...
Cross-Sections of Nanocellulose from Wood Analyzed by Quantized Polydispersity of Elementary Microfibrils
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- Rosén, Tomas, 1985- (författare)
- KTH,Fiber- och polymerteknologi,Wallenberg Wood Science Center,SUNY Stony Brook, Dept Chem, Stony Brook, NY 11794 USA.,Stony Brook University, USA; KTH Royal Institute of Technology, Sweden
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- He, HongRui (författare)
- Stony Brook University, USA,SUNY Stony Brook, Dept Chem, Stony Brook, NY 11794 USA.
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- Wang, Ruifu (författare)
- Stony Brook University, USA,SUNY Stony Brook, Dept Chem, Stony Brook, NY 11794 USA.
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- Zhan, Chengbo (författare)
- Stony Brook University, USA,SUNY Stony Brook, Dept Chem, Stony Brook, NY 11794 USA.
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- Chodankar, Shirish (författare)
- Brookhaven National Laboratory, USA,Brookhaven Natl Lab, Natl Synchrotron Light Source 2, Upton, NY 11793 USA.
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- Fall, Andreas (författare)
- RISE,Material- och ytdesign,RISE, S-11486 Stockholm, Sweden.
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- Aulin, Christian (författare)
- RISE,Material- och ytdesign,RISE, S-11486 Stockholm, Sweden.
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- Larsson, Per Tomas (författare)
- RISE,KTH Royal Institute of Technology, Sweden
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- Lindström, Tom (författare)
- Stony Brook University, USA,SUNY Stony Brook, Dept Chem, Stony Brook, NY 11794 USA.
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- Hsiao, Beenjamin (författare)
- Stony Brook University, USA,SUNY Stony Brook, Dept Chem, Stony Brook, NY 11794 USA.
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- Larsson, Per A., 1980- (författare)
- KTH,Fiberteknologi,Wallenberg Wood Science Center,RISE, S-11486 Stockholm, Sweden.
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(creator_code:org_t)
- 2020-11-30
- 2020
- Engelska.
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Ingår i: ACS Nano. - : American Chemical Society. - 1936-0851 .- 1936-086X. ; 14:12, s. 16743-16754
- Relaterad länk:
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https://www.osti.gov...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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Abstract
Ämnesord
Stäng
- Bio-based nanocellulose has been shown to possess impressive mechanical properties and simplicity for chemical modifications. The chemical properties are largely influenced by the surface area and functionality of the nanoscale materials. However, finding the typical cross-sections of nanocellulose, such as cellulose nanofibers (CNFs), has been a long-standing puzzle, where subtle changes in extraction methods seem to yield different shapes and dimensions. Here, we extracted CNFs from wood with two different oxidation methods and variations in degree of oxidation and high-pressure homogenization. The cross-sections of CNFs were characterized by small-angle X-ray scattering and wide-angle X-ray diffraction in dispersed and freeze-dried states, respectively, where the results were analyzed by assuming that the cross-sectional distribution was quantized with an 18-chain elementary microfibril, the building block of the cell wall. We find that the results agree well with a pseudosquare unit having a size of about 2.4 nm regardless of sample, while the aggregate level strongly depends on the extraction conditions. Furthermore, we find that aggregates have a preferred cohesion of phase boundaries parallel to the (110)-plane of the cellulose fibril, leading to a ribbon shape on average.
Ämnesord
- NATURVETENSKAP -- Biologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences (hsv//eng)
Nyckelord
- biosynthesis
- elementary microfibrils
- nanocellulose
- polydispersity
- small-/wide-angle X-ray scattering
- Aggregates
- Cellulose
- Cellulose nanocrystals
- Chemical modification
- Extraction
- X ray scattering
- Cellulose fibrils
- Cellulose nanofibers
- Cross-sectional distribution
- Extraction conditions
- Extraction method
- High pressure homogenization
- Nano-scale materials
- Wide angle Xray diffraction
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Rosén, Tomas, 19 ...
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He, HongRui
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Wang, Ruifu
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Zhan, Chengbo
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Chodankar, Shiri ...
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Fall, Andreas
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Aulin, Christian
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Larsson, Per Tom ...
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Lindström, Tom
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Hsiao, Beenjamin
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Larsson, Per A., ...
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