Reflectance FTIR microspectroscopy for studying effect of xylan removal on unbleached and bleached birch kraft pulps

Matti Ristolainen, Raimo Alen, Petteri Malkavaara, Jaakko Pere

Research output: Contribution to journalArticleScientificpeer-review

14 Citations (Scopus)

Abstract

The effect of the partial removal of xylan on unbleached and bleached birch kraft pulps was investigated by Fourier transform infrared (FTIR) microspectroscopy and the resulting data were analyzed by multivariate data analysis, i.e., principal component analysis (PCA) and maximum likelihood principal component analysis (MLPCA). Isolated model substances (xylan, cellulose and lignin) were used to calibrate these methods. Clear chemical changes in the relative proportions of the main constituents and functional groups on the pulp fiber surface were observed as a function of the amount of xylan removed. In addition, due to the partial removal of xylan, indications of some physical changes were observed.
Original languageEnglish
Pages (from-to)513-521
JournalHolzforschung
Volume56
Issue number5
DOIs
Publication statusPublished - 2002
MoE publication typeA1 Journal article-refereed

Fingerprint

Xylans
Bleached pulp
Kraft pulp
Fourier transforms
Infrared radiation
Principal component analysis
Lignin
Cellulose
Functional groups
Maximum likelihood
Pulp
Fibers

Keywords

  • Silver birch
  • Betula pendula
  • Kraft pulp
  • Xylanase treatment
  • FTIR microspectroscopy
  • MLPCA
  • PCA

Cite this

Ristolainen, Matti ; Alen, Raimo ; Malkavaara, Petteri ; Pere, Jaakko. / Reflectance FTIR microspectroscopy for studying effect of xylan removal on unbleached and bleached birch kraft pulps. In: Holzforschung. 2002 ; Vol. 56, No. 5. pp. 513-521.
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abstract = "The effect of the partial removal of xylan on unbleached and bleached birch kraft pulps was investigated by Fourier transform infrared (FTIR) microspectroscopy and the resulting data were analyzed by multivariate data analysis, i.e., principal component analysis (PCA) and maximum likelihood principal component analysis (MLPCA). Isolated model substances (xylan, cellulose and lignin) were used to calibrate these methods. Clear chemical changes in the relative proportions of the main constituents and functional groups on the pulp fiber surface were observed as a function of the amount of xylan removed. In addition, due to the partial removal of xylan, indications of some physical changes were observed.",
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Reflectance FTIR microspectroscopy for studying effect of xylan removal on unbleached and bleached birch kraft pulps. / Ristolainen, Matti; Alen, Raimo; Malkavaara, Petteri; Pere, Jaakko.

In: Holzforschung, Vol. 56, No. 5, 2002, p. 513-521.

Research output: Contribution to journalArticleScientificpeer-review

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AU - Ristolainen, Matti

AU - Alen, Raimo

AU - Malkavaara, Petteri

AU - Pere, Jaakko

PY - 2002

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AB - The effect of the partial removal of xylan on unbleached and bleached birch kraft pulps was investigated by Fourier transform infrared (FTIR) microspectroscopy and the resulting data were analyzed by multivariate data analysis, i.e., principal component analysis (PCA) and maximum likelihood principal component analysis (MLPCA). Isolated model substances (xylan, cellulose and lignin) were used to calibrate these methods. Clear chemical changes in the relative proportions of the main constituents and functional groups on the pulp fiber surface were observed as a function of the amount of xylan removed. In addition, due to the partial removal of xylan, indications of some physical changes were observed.

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KW - Betula pendula

KW - Kraft pulp

KW - Xylanase treatment

KW - FTIR microspectroscopy

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