Simultaneous bench scale production of dissolving grade pulp and valuable hemicelluloses from softwood kraft pulp by ionic liquid extraction

Christiane Laine, Sari Asikainen, Riku Talja, Agnes Stépán, Herbert Sixta, Ali Harlin

Research output: Contribution to journalArticleScientificpeer-review

13 Citations (Scopus)

Abstract

Ionic liquid extraction of wood pulp has been highlighted as a highly potential new process for dissolving pulp production. Coproduction with a polymeric hemicellulose fraction was demonstrated in bench scale from softwood kraft pulp using extraction with the ionic liquid 1-ethyl-3-methylimidazolium acetate (EMIM OAc) and water. In total, the recovered pulp and hemicellulose fraction together yielded 95.5 wt.% of the pulp input. The extracted pulp had a remarkably high purity with an R18-value of 97.8%. The hemicellulose fraction consisted of galactoglucomannan, arabinoxylan and some cellulose and was precipitated from the ionic liquid-water mixture. After hydroxypropylation of the hemicellulose fraction, films were prepared and barrier and strength properties were compared to films from other polysaccharides. Reduced oxygen and water vapor permeation and good strength properties were demonstrated when compared to corresponding films from hydroxypropylated xylan from cold caustic extraction. The films have potential for applications in food packaging and edible films.
Original languageEnglish
Pages (from-to)402-408
JournalCarbohydrate Polymers
Volume136
DOIs
Publication statusPublished - 2016
MoE publication typeA1 Journal article-refereed

Fingerprint

Ionic Liquids
Kraft pulp
Softwoods
Ionic liquids
Pulp
Xylans
Caustics
Water
Steam
Polysaccharides
Permeation
Cellulose
Water vapor
Packaging
Wood
hemicellulose
Oxygen

Keywords

  • hemicellulose
  • wood pulp
  • dissolving pulp
  • ionic liquid
  • modification
  • barrier film
  • strength properties

Cite this

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title = "Simultaneous bench scale production of dissolving grade pulp and valuable hemicelluloses from softwood kraft pulp by ionic liquid extraction",
abstract = "Ionic liquid extraction of wood pulp has been highlighted as a highly potential new process for dissolving pulp production. Coproduction with a polymeric hemicellulose fraction was demonstrated in bench scale from softwood kraft pulp using extraction with the ionic liquid 1-ethyl-3-methylimidazolium acetate (EMIM OAc) and water. In total, the recovered pulp and hemicellulose fraction together yielded 95.5 wt.{\%} of the pulp input. The extracted pulp had a remarkably high purity with an R18-value of 97.8{\%}. The hemicellulose fraction consisted of galactoglucomannan, arabinoxylan and some cellulose and was precipitated from the ionic liquid-water mixture. After hydroxypropylation of the hemicellulose fraction, films were prepared and barrier and strength properties were compared to films from other polysaccharides. Reduced oxygen and water vapor permeation and good strength properties were demonstrated when compared to corresponding films from hydroxypropylated xylan from cold caustic extraction. The films have potential for applications in food packaging and edible films.",
keywords = "hemicellulose, wood pulp, dissolving pulp, ionic liquid, modification, barrier film, strength properties",
author = "Christiane Laine and Sari Asikainen and Riku Talja and Agnes St{\'e}p{\'a}n and Herbert Sixta and Ali Harlin",
note = "SDA: SHP: Bioeconomy Project code: 86154",
year = "2016",
doi = "10.1016/j.carbpol.2015.09.039",
language = "English",
volume = "136",
pages = "402--408",
journal = "Carbohydrate Polymers",
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Simultaneous bench scale production of dissolving grade pulp and valuable hemicelluloses from softwood kraft pulp by ionic liquid extraction. / Laine, Christiane; Asikainen, Sari; Talja, Riku; Stépán, Agnes; Sixta, Herbert; Harlin, Ali.

In: Carbohydrate Polymers, Vol. 136, 2016, p. 402-408.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Simultaneous bench scale production of dissolving grade pulp and valuable hemicelluloses from softwood kraft pulp by ionic liquid extraction

AU - Laine, Christiane

AU - Asikainen, Sari

AU - Talja, Riku

AU - Stépán, Agnes

AU - Sixta, Herbert

AU - Harlin, Ali

N1 - SDA: SHP: Bioeconomy Project code: 86154

PY - 2016

Y1 - 2016

N2 - Ionic liquid extraction of wood pulp has been highlighted as a highly potential new process for dissolving pulp production. Coproduction with a polymeric hemicellulose fraction was demonstrated in bench scale from softwood kraft pulp using extraction with the ionic liquid 1-ethyl-3-methylimidazolium acetate (EMIM OAc) and water. In total, the recovered pulp and hemicellulose fraction together yielded 95.5 wt.% of the pulp input. The extracted pulp had a remarkably high purity with an R18-value of 97.8%. The hemicellulose fraction consisted of galactoglucomannan, arabinoxylan and some cellulose and was precipitated from the ionic liquid-water mixture. After hydroxypropylation of the hemicellulose fraction, films were prepared and barrier and strength properties were compared to films from other polysaccharides. Reduced oxygen and water vapor permeation and good strength properties were demonstrated when compared to corresponding films from hydroxypropylated xylan from cold caustic extraction. The films have potential for applications in food packaging and edible films.

AB - Ionic liquid extraction of wood pulp has been highlighted as a highly potential new process for dissolving pulp production. Coproduction with a polymeric hemicellulose fraction was demonstrated in bench scale from softwood kraft pulp using extraction with the ionic liquid 1-ethyl-3-methylimidazolium acetate (EMIM OAc) and water. In total, the recovered pulp and hemicellulose fraction together yielded 95.5 wt.% of the pulp input. The extracted pulp had a remarkably high purity with an R18-value of 97.8%. The hemicellulose fraction consisted of galactoglucomannan, arabinoxylan and some cellulose and was precipitated from the ionic liquid-water mixture. After hydroxypropylation of the hemicellulose fraction, films were prepared and barrier and strength properties were compared to films from other polysaccharides. Reduced oxygen and water vapor permeation and good strength properties were demonstrated when compared to corresponding films from hydroxypropylated xylan from cold caustic extraction. The films have potential for applications in food packaging and edible films.

KW - hemicellulose

KW - wood pulp

KW - dissolving pulp

KW - ionic liquid

KW - modification

KW - barrier film

KW - strength properties

U2 - 10.1016/j.carbpol.2015.09.039

DO - 10.1016/j.carbpol.2015.09.039

M3 - Article

VL - 136

SP - 402

EP - 408

JO - Carbohydrate Polymers

JF - Carbohydrate Polymers

SN - 0144-8617

ER -