FT-Raman, FT-infrared and NIR spectroscopic characterization of oxygen-delignified kraft pulp treated with hydrogen peroxide under acidic and alkaline conditions

Adam Wójciak , Henryk Kasprzyk , Ewa Sikorska , Alina Krawczyk , Marek Sikorski , Aleksandra Wesełucha-Birczyńska

Abstract

The effects of bleaching treatment of oxygen-delignified softwood kraft pulp with hydrogen peroxide under acidic and alkaline conditions were studied using standard technological techniques and spectroscopic analytical methods: near-infrared (NIR), Fourier-transform infrared (FTIR) and Fourier-transform (FT) Raman spectroscopies. Among the three tested spectroscopic techniques, NIR analysis appeared to be the most appropriate in terms of possible technological applications. The use of NIR spectroscopy combined with multivariate data analysis allowed to create models for pulp bleaching monitoring based on CIE L*a*b* measurements. Near-infrared and FTIR spectroscopic studies allowed differentiating between the effects of the acidic and alkaline peroxide bleaching stages, but failed in relation to the delignification process. The most representative bands in the FTIR and FT-Raman spectra in terms of delignification and chromophore removal exhibited no correlation with standard technological measurement results.
Author Adam Wójciak - Uniwersytet Przyrodniczy w Poznaniu
Adam Wójciak,,
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, Henryk Kasprzyk - Uniwersytet Przyrodniczy w Poznaniu
Henryk Kasprzyk,,
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, Ewa Sikorska (WT / KTiAI)
Ewa Sikorska,,
- Department of Technology and Instrumental Analysis
, Alina Krawczyk - University Adam Mickiewicz in Poznań
Alina Krawczyk,,
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, Marek Sikorski - Adam Mickiewicz University (UAM)
Marek Sikorski,,
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, Aleksandra Wesełucha-Birczyńska - Uniwersytet Jagielloński w Krakowie (UJ)
Aleksandra Wesełucha-Birczyńska,,
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Journal seriesVibrational Spectroscopy, ISSN 0924-2031, (A 25 pkt)
Issue year2014
Vol71
Pages62-69
Publication size in sheets0.5
Keywords in EnglishFT-Raman, FTIR and NIR spectroscopy, Hydrogen peroxide, Cellulose, Bleaching
ASJC Classification1607 Spectroscopy
DOIDOI:10.1016/j.vibspec.2014.01.007
Languageen angielski
Score (nominal)25
Score sourcejournalList
ScoreMinisterial score = 25.0, 10-01-2020, ArticleFromJournal
Ministerial score (2013-2016) = 25.0, 10-01-2020, ArticleFromJournal
Publication indicators WoS Citations = 7; Scopus SNIP (Source Normalised Impact per Paper): 2014 = 1.244; WoS Impact Factor: 2014 = 2.003 (2) - 2014=2.015 (5)
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