Lignofibre (LGF) organosolv process for producing dissolving pulps

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

Research output: Contribution to conferenceConference articleScientificpeer-review

Abstract

The potential of different organosolv processes, based on the utilization 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 reactivity of cellulose are required, and where the hemicellulose content is not critical, such as the cellulose ether grades.
Original languageEnglish
Publication statusPublished - 2013
Event17th International Symposium on Wood, Fibre and Pulping Chemistry, ISWEFPC 2013, 12 - 14 June 2013, Vancouver, Canada -
Duration: 1 Jan 2013 → …

Conference

Conference17th International Symposium on Wood, Fibre and Pulping Chemistry, ISWEFPC 2013, 12 - 14 June 2013, Vancouver, Canada
Period1/01/13 → …

Fingerprint

dissolving pulp
pulp
cellulose
hemicellulose
cooking
viscosity
delignification
bleaching
acetic acid
raw materials
ethers
lignin
metals

Keywords

  • organosolv
  • dissolving pulp
  • acetic acid

Cite this

Kangas, H., Poppius-Levlin, K., Tamminen, T., & Liitiä, T. (2013). Lignofibre (LGF) organosolv process for producing dissolving pulps. Paper presented at 17th International Symposium on Wood, Fibre and Pulping Chemistry, ISWEFPC 2013, 12 - 14 June 2013, Vancouver, Canada, .
Kangas, Heli ; Poppius-Levlin, Kristiina ; Tamminen, Tarja ; Liitiä, Tiina. / Lignofibre (LGF) organosolv process for producing dissolving pulps. Paper presented at 17th International Symposium on Wood, Fibre and Pulping Chemistry, ISWEFPC 2013, 12 - 14 June 2013, Vancouver, Canada, .
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abstract = "The potential of different organosolv processes, based on the utilization 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 reactivity of cellulose are required, and where the hemicellulose content is not critical, such as the cellulose ether grades.",
keywords = "organosolv, dissolving pulp, acetic acid",
author = "Heli Kangas and Kristiina Poppius-Levlin and Tarja Tamminen and Tiina Liiti{\"a}",
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Kangas, H, Poppius-Levlin, K, Tamminen, T & Liitiä, T 2013, 'Lignofibre (LGF) organosolv process for producing dissolving pulps' Paper presented at 17th International Symposium on Wood, Fibre and Pulping Chemistry, ISWEFPC 2013, 12 - 14 June 2013, Vancouver, Canada, 1/01/13, .

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

2013. Paper presented at 17th International Symposium on Wood, Fibre and Pulping Chemistry, ISWEFPC 2013, 12 - 14 June 2013, Vancouver, Canada, .

Research output: Contribution to conferenceConference articleScientificpeer-review

TY - CONF

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

AU - Kangas, Heli

AU - Poppius-Levlin, Kristiina

AU - Tamminen, Tarja

AU - Liitiä, Tiina

N1 - Project code: 73553

PY - 2013

Y1 - 2013

N2 - The potential of different organosolv processes, based on the utilization 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 reactivity of cellulose are required, and where the hemicellulose content is not critical, such as the cellulose ether grades.

AB - The potential of different organosolv processes, based on the utilization 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 reactivity of cellulose are required, and where the hemicellulose content is not critical, such as the cellulose ether grades.

KW - organosolv

KW - dissolving pulp

KW - acetic acid

M3 - Conference article

ER -

Kangas H, Poppius-Levlin K, Tamminen T, Liitiä T. Lignofibre (LGF) organosolv process for producing dissolving pulps. 2013. Paper presented at 17th International Symposium on Wood, Fibre and Pulping Chemistry, ISWEFPC 2013, 12 - 14 June 2013, Vancouver, Canada, .