Isolation of Mixed Compositions of Cellulose Nanocrystals, Microcrystalline Cellulose, and Lignin Nanoparticles from Wood Pulps

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Isolation of Mixed Compositions of Cellulose Nanocrystals, Microcrystalline Cellulose, and Lignin Nanoparticles from Wood Pulps

Abitbol, Tiffany (author): RISE,Institute of Materials, School of Engineering, EPFL, 1015 Lausanne, Switzerland;Bioeconomy and Health, RISE Research Institutes of Sweden, SE-114 28 Stockholm, Sweden

Kubat, Mikaela (author): RISE,Material- och ytdesign,Bioeconomy and Health, RISE Research Institutes of Sweden, SE-114 28 Stockholm, Sweden

Brännvall, Elisabet, 1961- (author): RISE,Bioeconomy and Health, RISE Research Institutes of Sweden, SE-114 28 Stockholm, Sweden

Kotov, Nikolay (author): KTH,Yt- och korrosionsvetenskap,KTH Royal Institute of Technology, Sweden

Johnson, C. Magnus (author): KTH,Yt- och korrosionsvetenskap,KTH Royal Institute of Technology, Sweden

Nizamov, Rustem (author): Department of Mechanical and Materials Engineering, Faculty of Technology, University of Turku, FI-20014 Turku, Finland

Nyberg, Mikael (author): Department of Mechanical and Materials Engineering, Faculty of Technology, University of Turku, FI-20014 Turku, Finland

Miettunen, Kati (author): Department of Mechanical and Materials Engineering, Faculty of Technology, University of Turku, FI-20014 Turku, Finland

Nordgren, Niklas (author): RISE,Material- och ytdesign,Bioeconomy and Health, RISE Research Institutes of Sweden, SE-114 28 Stockholm, Sweden

Stevanic Srndovic, Jasna (author): RISE,Material- och ytdesign,Bioeconomy and Health, RISE Research Institutes of Sweden, SE-114 28 Stockholm, Sweden

Guerreiro, Maria Pita (author): RISE,Bioeconomy and Health, RISE Research Institutes of Sweden, SE-114 28 Stockholm, Sweden

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American Chemical Society (ACS), 2023
2023
English.
In: ACS Omega. - : American Chemical Society (ACS). - 2470-1343. ; 8:24, s. 21474-21484

Related links:: https://doi.org/10.1...; show more...; https://urn.kb.se/re...; https://doi.org/10.1...; https://urn.kb.se/re...; show less...

Journal article (peer-reviewed)

Abstract Subject headings

From a circular economyperspective, one-pot strategies for theisolation of cellulose nanomaterials at a high yield and with multifunctionalproperties are attractive. Here, the effects of lignin content (bleachedvs unbleached softwood kraft pulp) and sulfuric acid concentrationon the properties of crystalline lignocellulose isolates and theirfilms are explored. Hydrolysis at 58 wt % sulfuric acid resulted inboth cellulose nanocrystals (CNCs) and microcrystalline celluloseat a relatively high yield (>55%), whereas hydrolysis at 64 wt% gaveCNCs at a lower yield (<20%). CNCs from 58 wt % hydrolysis weremore polydisperse and had a higher average aspect ratio (1.5-2x),a lower surface charge (2x), and a higher shear viscosity (100-1000x).Hydrolysis of unbleached pulp additionally yielded spherical nanoparticles(NPs) that were <50 nm in diameter and identified as lignin bynanoscale Fourier transform infrared spectroscopy and IR imaging.Chiral nematic self-organization was observed in films from CNCs isolatedat 64 wt % but not from the more heterogeneous CNC qualities producedat 58 wt %. All films degraded to some extent under simulated sunlighttrials, but these effects were less pronounced in lignin-NP-containingfilms, suggesting a protective feature, but the hemicellulose contentand CNC crystallinity may be implicated as well. Finally, heterogeneousCNC compositions obtained at a high yield and with improved resourceefficiency are suggested for specific nanocellulose uses, for instance,as thickeners or reinforcing fillers, representing a step toward thedevelopment of application-tailored CNC grades.

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By the author/editor: Abitbol, Tiffany; Kubat, Mikaela; Brännvall, Elisa ...; Kotov, Nikolay; Johnson, C. Magn ...; Nizamov, Rustem; show more...; Nyberg, Mikael; Miettunen, Kati; Nordgren, Niklas; Stevanic Srndovi ...; Guerreiro, Maria ...; show less...

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ENGINEERING AND TECHNOLOGY: ENGINEERING AND ...; and Chemical Enginee ...; and Corrosion Engine ...

ENGINEERING AND TECHNOLOGY: ENGINEERING AND ...; and Industrial Biote ...; and Biochemicals

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By the university: Royal Institute of Technology; RISE

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Isolation of Mixed Compositions of Cellulose Nanocrystals, Microcrystalline Cellulose, and Lignin Nanoparticles from Wood Pulps

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