Lignofibre (LGF) organosolv process for producing dissolving pulps

Heli Kangas, Tarja Tamminen, Tiina Liitiä, Sari Asikainen, Kristiina Poppius-Levlin

Research output: Contribution to journalArticleScientificpeer-review

2 Citations (Scopus)

Abstract

The potential of different organosolv processes, based on use of acetic acid as the cooking solvent, to produce high-quality pulps meeting the requirements for dissolving pulps was evaluated. The Lignofibre (LGF) and Formacell processes produced pulps with acceptable delignification degree at short cooking times. Both of these pulps were readily bleachable to high brightness with short ECF and TCF bleaching sequences. The pulps met most of the general requirements for dissolving pulps, i.e., high cellulose and low lignin, hemicellulose, ash, and metal contents as well as adequate viscosity and R18. The reactivity of cellulose, as determined by the Fock method, was very high. The LGF pulp was shown to be a potential raw material for regenerated cellulose applications, where high viscosities together with high cellulose reactivity are required, and where the hemicellulose content is not critically important, such as the cellulose ether grades.
Original languageEnglish
Pages (from-to)48-55
Number of pages8
JournalJ-FOR: Journal of Science & Technology for Forest Products and Processes
Volume3
Issue number6
Publication statusPublished - 2013
MoE publication typeA1 Journal article-refereed

Fingerprint

Pulp
Cellulose
Pulp cooking
Ashes
Viscosity
Delignification
Lignin
Bleaching
Acetic acid
Acetic Acid
Ether
Luminance
Ethers
Raw materials
Metals

Keywords

  • acetic acids
  • phosphinic acids
  • organosolv
  • dissolving pulp

Cite this

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title = "Lignofibre (LGF) organosolv process for producing dissolving pulps",
abstract = "The potential of different organosolv processes, based on use of acetic acid as the cooking solvent, to produce high-quality pulps meeting the requirements for dissolving pulps was evaluated. The Lignofibre (LGF) and Formacell processes produced pulps with acceptable delignification degree at short cooking times. Both of these pulps were readily bleachable to high brightness with short ECF and TCF bleaching sequences. The pulps met most of the general requirements for dissolving pulps, i.e., high cellulose and low lignin, hemicellulose, ash, and metal contents as well as adequate viscosity and R18. The reactivity of cellulose, as determined by the Fock method, was very high. The LGF pulp was shown to be a potential raw material for regenerated cellulose applications, where high viscosities together with high cellulose reactivity are required, and where the hemicellulose content is not critically important, such as the cellulose ether grades.",
keywords = "acetic acids, phosphinic acids, organosolv, dissolving pulp",
author = "Heli Kangas and Tarja Tamminen and Tiina Liiti{\"a} and Sari Asikainen and Kristiina Poppius-Levlin",
note = "Project code: 73553",
year = "2013",
language = "English",
volume = "3",
pages = "48--55",
journal = "J-FOR: Journal of Science & Technology for Forest Products and Processes",
issn = "1927-6311",
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}

Lignofibre (LGF) organosolv process for producing dissolving pulps. / Kangas, Heli; Tamminen, Tarja; Liitiä, Tiina; Asikainen, Sari; Poppius-Levlin, Kristiina.

In: J-FOR: Journal of Science & Technology for Forest Products and Processes, Vol. 3, No. 6, 2013, p. 48-55.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Lignofibre (LGF) organosolv process for producing dissolving pulps

AU - Kangas, Heli

AU - Tamminen, Tarja

AU - Liitiä, Tiina

AU - Asikainen, Sari

AU - Poppius-Levlin, Kristiina

N1 - Project code: 73553

PY - 2013

Y1 - 2013

N2 - The potential of different organosolv processes, based on use of acetic acid as the cooking solvent, to produce high-quality pulps meeting the requirements for dissolving pulps was evaluated. The Lignofibre (LGF) and Formacell processes produced pulps with acceptable delignification degree at short cooking times. Both of these pulps were readily bleachable to high brightness with short ECF and TCF bleaching sequences. The pulps met most of the general requirements for dissolving pulps, i.e., high cellulose and low lignin, hemicellulose, ash, and metal contents as well as adequate viscosity and R18. The reactivity of cellulose, as determined by the Fock method, was very high. The LGF pulp was shown to be a potential raw material for regenerated cellulose applications, where high viscosities together with high cellulose reactivity are required, and where the hemicellulose content is not critically important, such as the cellulose ether grades.

AB - The potential of different organosolv processes, based on use of acetic acid as the cooking solvent, to produce high-quality pulps meeting the requirements for dissolving pulps was evaluated. The Lignofibre (LGF) and Formacell processes produced pulps with acceptable delignification degree at short cooking times. Both of these pulps were readily bleachable to high brightness with short ECF and TCF bleaching sequences. The pulps met most of the general requirements for dissolving pulps, i.e., high cellulose and low lignin, hemicellulose, ash, and metal contents as well as adequate viscosity and R18. The reactivity of cellulose, as determined by the Fock method, was very high. The LGF pulp was shown to be a potential raw material for regenerated cellulose applications, where high viscosities together with high cellulose reactivity are required, and where the hemicellulose content is not critically important, such as the cellulose ether grades.

KW - acetic acids

KW - phosphinic acids

KW - organosolv

KW - dissolving pulp

M3 - Article

VL - 3

SP - 48

EP - 55

JO - J-FOR: Journal of Science & Technology for Forest Products and Processes

JF - J-FOR: Journal of Science & Technology for Forest Products and Processes

SN - 1927-6311

IS - 6

ER -