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Quantification of c...
Quantification of cellulose forms in complex cellulose materials : A chemometric model
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Wickholm, K. (författare)
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Hult, E. -L (författare)
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Larsson, P. T. (författare)
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Iversen, T. (författare)
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- Lennholm, Helena (författare)
- KTH,Pappers- och massateknik
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(creator_code:org_t)
- Stockholm : Kluwer Academic Publishers, 2001
- 2001
- Engelska.
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Ingår i: Cellulose. - Stockholm : Kluwer Academic Publishers. - 0969-0239 .- 1572-882X. ; 8:2, s. 139-148
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- In this paper, we present a chemometric model for quantifying the cellulose forms with different states of order found within cellulose I fibrils. The relative amounts of the different cellulose forms, that is crystalline cellulose I, para-crystalline cellulose and cellulose at accessible and inaccessible cellulose surfaces, were determined by non-linear least squares fitting of the C4-region in CP/MAS C-13-NMR (Cross-Polarisation Magic Angle Spinning Carbon-13 Nuclear Magnetic Resonance) spectra. By correlating these results from the C4-region with the full spectral data we obtained a model which is able to provide an assessment of the relative amounts of the different cellulose forms directly from NMR-spectra of complex lignocellulosic samples. Furthermore, this model enabled new assignments to be made in the C1-region for signals from cellulose at accessible fibril surfaces.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Materialteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering (hsv//eng)
Nyckelord
- cellulose I
- NMR
- chemometrics
- PLS
- fibril surface
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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