Reflectance UV-VIS and UV Resonance Raman spectroscopy in characterization of kraft pulps

Anni Lähdetie (Corresponding Author), Tiina Liitiä, Tarja Tamminen, Anna-Stiina Jääskeläinen

Research output: Contribution to journalArticleScientificpeer-review

8 Citations (Scopus)

Abstract

Reflectance UV-Vis spectroscopy and UV resonance Raman (UVRR) spectroscopy are both nondestructive techniques that are applicable to study trace concentrations of lignin in-situ. In this study, unbleached and bleached softwood kraft pulps were analyzed by reflectance UV-Vis (k/s) and UVRR spectroscopy to follow lignin and hexenuronic acid (HexA) contents and structural changes in residual lignin. The height of the lignin band in the UV-Vis spectra (280 nm) correlated well with the lignin band in the UVRR spectra (1605 cm-1) for semi- or fully-bleached pulps. However, the correlation was much weaker for unbleached pulps. Also the results for hexenuronic acid content by UV-Vis (240 nm) and UVRR (1658 cm-1) methods correlated well for most of the pulps, but for unbleached or peroxide-bleached samples the interference from other structures affecting these bands was obvious.
Original languageEnglish
Pages (from-to)1600-1619
Number of pages20
JournalBioResources
Volume4
Issue number4
Publication statusPublished - 2009
MoE publication typeA1 Journal article-refereed

Fingerprint

Kraft pulp
Lignin
Raman spectroscopy
lignin
reflectance
Unbleached pulp
Bleached pulp
Acids
Softwoods
acid
Peroxides
Ultraviolet spectroscopy
structural change
Pulp
Raman scattering
spectroscopy
pulp
hexenuronic acid

Keywords

  • Bleaching
  • Kraft pulps
  • UV resonance Raman (UVRR) spectroscopy
  • UV-Vis spectroscopy

Cite this

Lähdetie, Anni ; Liitiä, Tiina ; Tamminen, Tarja ; Jääskeläinen, Anna-Stiina. / Reflectance UV-VIS and UV Resonance Raman spectroscopy in characterization of kraft pulps. In: BioResources. 2009 ; Vol. 4, No. 4. pp. 1600-1619.
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title = "Reflectance UV-VIS and UV Resonance Raman spectroscopy in characterization of kraft pulps",
abstract = "Reflectance UV-Vis spectroscopy and UV resonance Raman (UVRR) spectroscopy are both nondestructive techniques that are applicable to study trace concentrations of lignin in-situ. In this study, unbleached and bleached softwood kraft pulps were analyzed by reflectance UV-Vis (k/s) and UVRR spectroscopy to follow lignin and hexenuronic acid (HexA) contents and structural changes in residual lignin. The height of the lignin band in the UV-Vis spectra (280 nm) correlated well with the lignin band in the UVRR spectra (1605 cm-1) for semi- or fully-bleached pulps. However, the correlation was much weaker for unbleached pulps. Also the results for hexenuronic acid content by UV-Vis (240 nm) and UVRR (1658 cm-1) methods correlated well for most of the pulps, but for unbleached or peroxide-bleached samples the interference from other structures affecting these bands was obvious.",
keywords = "Bleaching, Kraft pulps, UV resonance Raman (UVRR) spectroscopy, UV-Vis spectroscopy",
author = "Anni L{\"a}hdetie and Tiina Liiti{\"a} and Tarja Tamminen and Anna-Stiina J{\"a}{\"a}skel{\"a}inen",
year = "2009",
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Reflectance UV-VIS and UV Resonance Raman spectroscopy in characterization of kraft pulps. / Lähdetie, Anni (Corresponding Author); Liitiä, Tiina; Tamminen, Tarja; Jääskeläinen, Anna-Stiina.

In: BioResources, Vol. 4, No. 4, 2009, p. 1600-1619.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Reflectance UV-VIS and UV Resonance Raman spectroscopy in characterization of kraft pulps

AU - Lähdetie, Anni

AU - Liitiä, Tiina

AU - Tamminen, Tarja

AU - Jääskeläinen, Anna-Stiina

PY - 2009

Y1 - 2009

N2 - Reflectance UV-Vis spectroscopy and UV resonance Raman (UVRR) spectroscopy are both nondestructive techniques that are applicable to study trace concentrations of lignin in-situ. In this study, unbleached and bleached softwood kraft pulps were analyzed by reflectance UV-Vis (k/s) and UVRR spectroscopy to follow lignin and hexenuronic acid (HexA) contents and structural changes in residual lignin. The height of the lignin band in the UV-Vis spectra (280 nm) correlated well with the lignin band in the UVRR spectra (1605 cm-1) for semi- or fully-bleached pulps. However, the correlation was much weaker for unbleached pulps. Also the results for hexenuronic acid content by UV-Vis (240 nm) and UVRR (1658 cm-1) methods correlated well for most of the pulps, but for unbleached or peroxide-bleached samples the interference from other structures affecting these bands was obvious.

AB - Reflectance UV-Vis spectroscopy and UV resonance Raman (UVRR) spectroscopy are both nondestructive techniques that are applicable to study trace concentrations of lignin in-situ. In this study, unbleached and bleached softwood kraft pulps were analyzed by reflectance UV-Vis (k/s) and UVRR spectroscopy to follow lignin and hexenuronic acid (HexA) contents and structural changes in residual lignin. The height of the lignin band in the UV-Vis spectra (280 nm) correlated well with the lignin band in the UVRR spectra (1605 cm-1) for semi- or fully-bleached pulps. However, the correlation was much weaker for unbleached pulps. Also the results for hexenuronic acid content by UV-Vis (240 nm) and UVRR (1658 cm-1) methods correlated well for most of the pulps, but for unbleached or peroxide-bleached samples the interference from other structures affecting these bands was obvious.

KW - Bleaching

KW - Kraft pulps

KW - UV resonance Raman (UVRR) spectroscopy

KW - UV-Vis spectroscopy

M3 - Article

VL - 4

SP - 1600

EP - 1619

JO - BioResources

JF - BioResources

SN - 1930-2126

IS - 4

ER -