Journal
NANO LETTERS
Volume 21, Issue 7, Pages 2883-2890Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.nanolett.0c05038
Keywords
Wood Nanotechnology; Neutron Scattering; Biocomposites
Categories
Funding
- Beijing Municipal Natural Science Foundation [2204096]
- Beijing Institute of Technology Research Fund Program for Young Scholars
- European Research Council (ERC) Advanced Grant funding under the European Union's Horizon 2020 research and innovation program [742733]
- Genomic Science Program, Office of Biological and Environmental Research (OBER), U.S. Department of Energy (DOE) [FWP ERKP752]
- OBER - Basic Energy Sciences, Department of Energy [FWP ERKP291, IPTS-18951.1]
- French National Research Agency (ANR) under the Investissements davenir'' program [ANR-11-EQPX-0010]
- National Institutes of Health, National Institute of General Medical Sciences (NIGMS) [P30GM133893]
- DOE Office of Biological and Environmental Research [KP1605010]
- NIH [S10 OD012331]
- U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences Program [DESC0012704]
- DOE office of Science [DE-SC0012704]
- BIT-Belarus
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Transparent wood biocomposites based on PMMA combine high optical transmittance with excellent mechanical properties. The nanoscale polymer distribution inside the cell wall is proven using small-angle neutron scattering experiments with deuterated PMMA and contrast-matched PMMA. The specific processing method serves as a nanotechnology for cell wall impregnation of polymers in large wood biocomposite structures.
Transparent wood biocomposites based on PMMA combine high optical transmittance with excellent mechanical properties. One hypothesis is that despite poor miscibility the polymer is distributed at the nanoscale inside the cell wall. Small-angle neutron scattering (SANS) experiments are performed to test this hypothesis, using biocomposites based on deuterated PMMA and contrast-matched PMMA. The wood cell wall nanostructure soaked in heavy water is quantified in terms of the correlation distance d between the center of elementary cellulose fibrils. For wood/deuterated PMMA, this distance d is very similar as for wood/heavy water (correlation peaks at q approximate to 0.1 angstrom(-1)). The peak disappears when contrast-matched PMMA is used, indeed proving nanoscale polymer distribution in the cell wall. The specific processing method used for transparent wood explains the nanocomposite nature of the wood cell wall and can serve as a nanotechnology for cell wall impregnation of polymers in large wood biocomposite structures.
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