Investigation on the effect of acetylation and reduction treatments on the chromophore groups of isolated lignin from unbleached hardwoods chemimecanical pulp using FT-IR spectroscopy

This study lignin from unbleached hardwoods chemimechanical pulp was extracted and the chromophor functional groups of the lignin were studied. Acetylation and reduction treatments were perfomed and samples were analyzed by FT-IR spectroscopy. A mild acidic dioxin extraction method was employed to i...

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Autores principales:	Asghar Tabei, Reza Solhnejad, Arash Farajpoor Roodsari
Formato:	article
Lenguaje:	FA
Publicado:	Regional Information Center for Science and Technology (RICeST) 2014
Materias:	Unbleached chemimechanical pulp LIGNIN Acetylation Reduction chromophor groups FT-IR spectroscopy Forestry SD1-669.5
Acceso en línea:	https://doaj.org/article/ef4183a9b8d341f5a27f6c179734c344
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spelling	oai:doaj.org-article:ef4183a9b8d341f5a27f6c179734c3442021-12-02T07:43:06ZInvestigation on the effect of acetylation and reduction treatments on the chromophore groups of isolated lignin from unbleached hardwoods chemimecanical pulp using FT-IR spectroscopy1735-09132383-112X10.22092/ijwpr.2014.4926https://doaj.org/article/ef4183a9b8d341f5a27f6c179734c3442014-03-01T00:00:00Zhttp://ijwpr.areeo.ac.ir/article_4926_100cd595b12084a387839ba13fdf7698.pdfhttps://doaj.org/toc/1735-0913https://doaj.org/toc/2383-112XThis study lignin from unbleached hardwoods chemimechanical pulp was extracted and the chromophor functional groups of the lignin were studied. Acetylation and reduction treatments were perfomed and samples were analyzed by FT-IR spectroscopy. A mild acidic dioxin extraction method was employed to isolate lignin. For the acetylation and reduction treatments of lignin acetic acid and sodium borohydride were used respectively. The results of untreated and treated (acetylated and reduced) lignin spectra showed that, the major of lignin chromophor groups such as hydroxyl and carbonyl groups have been reduced or eliminated by these treatments. In the acetylated lignin, the absorption band of hydroxyl groups has been weakened and in the 1743.16 Cm-1 region, acetoxy compounds band has appeared and also a cluster absorption band was observed in the 1228.76 Cm-1 region. In the reduced lignin, most of the absorption bands of the carbonyl groups have been weakened or eliminated, especially in the 1705.56 and 1629.54 Cm-1 region.Asghar TabeiReza SolhnejadArash Farajpoor RoodsariRegional Information Center for Science and Technology (RICeST)articleUnbleached chemimechanical pulpLIGNINAcetylationReductionchromophor groupsFT-IR spectroscopyForestrySD1-669.5FAتحقیقات علوم چوب و کاغذ ایران, Vol 29, Iss 1, Pp 79-93 (2014)
institution	DOAJ
collection	DOAJ
language	FA
topic	Unbleached chemimechanical pulp LIGNIN Acetylation Reduction chromophor groups FT-IR spectroscopy Forestry SD1-669.5
spellingShingle	Unbleached chemimechanical pulp LIGNIN Acetylation Reduction chromophor groups FT-IR spectroscopy Forestry SD1-669.5 Asghar Tabei Reza Solhnejad Arash Farajpoor Roodsari Investigation on the effect of acetylation and reduction treatments on the chromophore groups of isolated lignin from unbleached hardwoods chemimecanical pulp using FT-IR spectroscopy
description	This study lignin from unbleached hardwoods chemimechanical pulp was extracted and the chromophor functional groups of the lignin were studied. Acetylation and reduction treatments were perfomed and samples were analyzed by FT-IR spectroscopy. A mild acidic dioxin extraction method was employed to isolate lignin. For the acetylation and reduction treatments of lignin acetic acid and sodium borohydride were used respectively. The results of untreated and treated (acetylated and reduced) lignin spectra showed that, the major of lignin chromophor groups such as hydroxyl and carbonyl groups have been reduced or eliminated by these treatments. In the acetylated lignin, the absorption band of hydroxyl groups has been weakened and in the 1743.16 Cm-1 region, acetoxy compounds band has appeared and also a cluster absorption band was observed in the 1228.76 Cm-1 region. In the reduced lignin, most of the absorption bands of the carbonyl groups have been weakened or eliminated, especially in the 1705.56 and 1629.54 Cm-1 region.
format	article
author	Asghar Tabei Reza Solhnejad Arash Farajpoor Roodsari
author_facet	Asghar Tabei Reza Solhnejad Arash Farajpoor Roodsari
author_sort	Asghar Tabei
title	Investigation on the effect of acetylation and reduction treatments on the chromophore groups of isolated lignin from unbleached hardwoods chemimecanical pulp using FT-IR spectroscopy
title_short	Investigation on the effect of acetylation and reduction treatments on the chromophore groups of isolated lignin from unbleached hardwoods chemimecanical pulp using FT-IR spectroscopy
title_full	Investigation on the effect of acetylation and reduction treatments on the chromophore groups of isolated lignin from unbleached hardwoods chemimecanical pulp using FT-IR spectroscopy
title_fullStr	Investigation on the effect of acetylation and reduction treatments on the chromophore groups of isolated lignin from unbleached hardwoods chemimecanical pulp using FT-IR spectroscopy
title_full_unstemmed	Investigation on the effect of acetylation and reduction treatments on the chromophore groups of isolated lignin from unbleached hardwoods chemimecanical pulp using FT-IR spectroscopy
title_sort	investigation on the effect of acetylation and reduction treatments on the chromophore groups of isolated lignin from unbleached hardwoods chemimecanical pulp using ft-ir spectroscopy
publisher	Regional Information Center for Science and Technology (RICeST)
publishDate	2014
url	https://doaj.org/article/ef4183a9b8d341f5a27f6c179734c344
work_keys_str_mv	AT asghartabei investigationontheeffectofacetylationandreductiontreatmentsonthechromophoregroupsofisolatedligninfromunbleachedhardwoodschemimecanicalpulpusingftirspectroscopy AT rezasolhnejad investigationontheeffectofacetylationandreductiontreatmentsonthechromophoregroupsofisolatedligninfromunbleachedhardwoodschemimecanicalpulpusingftirspectroscopy AT arashfarajpoorroodsari investigationontheeffectofacetylationandreductiontreatmentsonthechromophoregroupsofisolatedligninfromunbleachedhardwoodschemimecanicalpulpusingftirspectroscopy
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Investigation on the effect of acetylation and reduction treatments on the chromophore groups of isolated lignin from unbleached hardwoods chemimecanical pulp using FT-IR spectroscopy

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