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Determination of the Degree of Oxidation in Dialdehyde Cellulose Using Near Infrared Spectroscopy
Karlstad University, Faculty of Technology and Science, Department of Chemical Engineering.
2017 (English)Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesisAlternative title
Bestämning av oxidationsgraden i dialdehydcellulosa med nära infraröd spektroskopi (Swedish)
Abstract [en]

The purpose of this thesis work was to investigate possible in-, on- or at-line methods to determine the degree of oxidation in dialdehyde cellulose. Several technologies were reviewed which led to a feasibility study into a possible on-line or at-line method using near infrared spectroscopy for determining the degree of oxidation in wet dialdehyde cellulose. A calibration model was built using the near infrared spectra of 19 samples created from kraft pulp with a degree of oxidation between 0 and 52.1 %. The obtained model uses five significant principal components and has a goodness of fit (R2) of 0.998 and a goodness ofprediction (Q2) of 0.991. The first principal component describes the degree of oxidation and the second the water content. A validation set of six samples was used to test the model and the predicted values resulted in a root mean square error of prediction of 0.85 in comparison with the reference method which had a pooled standard deviation of 0.69.

Place, publisher, year, edition, pages
2017. , p. 42
Keywords [en]
dialdehyde cellulose, DAC, NIR, periodate oxidation, multivariate analysis, degree of oxidation
Keywords [sv]
dialdehydcellulosa, DAC
National Category
Chemical Engineering
Identifiers
URN: urn:nbn:se:kau:diva-55258OAI: oai:DiVA.org:kau-55258DiVA, id: diva2:1113063
External cooperation
VINN Excellence Centre and BiMaC Innovation; Stora Enso
Subject / course
Chemical Engineering
Educational program
Engineering: Chemical Engineering (300 ECTS credits)
Supervisors
Examiners
Available from: 2017-06-20 Created: 2017-06-21 Last updated: 2017-06-21Bibliographically approved

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Brandén, Carl-Magnus
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