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Quantification of cellulose forms in complex cellulose materials: A chemometric model
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2001 (English)In: Cellulose (London), ISSN 0969-0239, E-ISSN 1572-882X, Vol. 8, no 2, p. 139-148Article in journal (Refereed) Published
Abstract [en]

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.

Place, publisher, year, edition, pages
Stockholm: Kluwer Academic Publishers, 2001. Vol. 8, no 2, p. 139-148
Keyword [en]
cellulose I, NMR, chemometrics, PLS, fibril surface
National Category
Materials Engineering
Identifiers
URN: urn:nbn:se:kth:diva-225359DOI: 10.1023/A:1016700325434ISI: 000170941300005Scopus ID: 2-s2.0-0034779395OAI: oai:DiVA.org:kth-225359DiVA, id: diva2:1194557
Note

QC 20180403

Available from: 2018-04-03 Created: 2018-04-03 Last updated: 2018-04-03Bibliographically approved

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