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Enhanced pre-treatment of cellulose pulp prior to dissolution into NaOH/ZnO

Tutkimustuotosvertaisarvioitu

Standard

Enhanced pre-treatment of cellulose pulp prior to dissolution into NaOH/ZnO. / Grönqvist, S.; Kamppuri, T.; Maloney, T.; Vehviläinen, M.; Liitiä, T.; Suurnäkki, A.

julkaisussa: Cellulose, Vuosikerta 22, Nro 6, 12.2015, s. 3981-3990.

Tutkimustuotosvertaisarvioitu

Harvard

Grönqvist, S, Kamppuri, T, Maloney, T, Vehviläinen, M, Liitiä, T & Suurnäkki, A 2015, 'Enhanced pre-treatment of cellulose pulp prior to dissolution into NaOH/ZnO', Cellulose, Vuosikerta. 22, Nro 6, Sivut 3981-3990. https://doi.org/10.1007/s10570-015-0742-8

APA

Grönqvist, S., Kamppuri, T., Maloney, T., Vehviläinen, M., Liitiä, T., & Suurnäkki, A. (2015). Enhanced pre-treatment of cellulose pulp prior to dissolution into NaOH/ZnO. Cellulose, 22(6), 3981-3990. https://doi.org/10.1007/s10570-015-0742-8

Vancouver

Grönqvist S, Kamppuri T, Maloney T, Vehviläinen M, Liitiä T, Suurnäkki A. Enhanced pre-treatment of cellulose pulp prior to dissolution into NaOH/ZnO. Cellulose. 2015 joulu;22(6):3981-3990. https://doi.org/10.1007/s10570-015-0742-8

Author

Grönqvist, S. ; Kamppuri, T. ; Maloney, T. ; Vehviläinen, M. ; Liitiä, T. ; Suurnäkki, A. / Enhanced pre-treatment of cellulose pulp prior to dissolution into NaOH/ZnO. Julkaisussa: Cellulose. 2015 ; Vuosikerta 22, Nro 6. Sivut 3981-3990.

Bibtex - Lataa

@article{1935565ed7b841769d54259cfa4fb93d,
title = "Enhanced pre-treatment of cellulose pulp prior to dissolution into NaOH/ZnO",
abstract = "As a result of the constantly growing demand for textile fibres interest in utilising cellulose pulps for manufacturing regenerated cellulose fibres is growing. One promising water-based process for the manufacture of regenerated cellulosic products is the Biocelsol process based on an NaOH/ZnO solvent system. The drawback of the Biocelsol process is the need for pre-treatment of the pulp, i.e. long mechanical pre-treatment (up to 5 h) followed by a 2–3-h enzymatic hydrolysis utilising a rather high amount of cellulolytic enzymes. In this work more efficient conditions to carry out the pre-treatment of cellulose pulp prior to dissolution into NaOH/ZnO are presented. Based on the results, cellulase treatment, when carried out in an extruder, can be used to effectively open up and fibrillate the fibres without completely destroying the fibre structure. The molar mass of the pulp treated enzymatically in an extruder was 14 {\%} lower as compared to the state-of-the-art-treated cellulose. As a consequence, the alkaline solutions prepared from the pulp treated enzymatically in an extruder had clearly lower dope viscosities regarding the cellulose content than the solutions prepared from the state-of-the-art-treated pulp. This enabled increasing the cellulose content in the dope up to 7 {\%} (w/w) without increasing the dope viscosity.",
keywords = "Biocelsol, Cellulose dissolution, Dissolving pulp, Enzymatic hydrolysis, Porosity, Pre-treatment, Solute exclusion",
author = "S. Gr{\"o}nqvist and T. Kamppuri and T. Maloney and M. Vehvil{\"a}inen and T. Liiti{\"a} and A. Suurn{\"a}kki",
year = "2015",
month = "12",
doi = "10.1007/s10570-015-0742-8",
language = "English",
volume = "22",
pages = "3981--3990",
journal = "Cellulose",
issn = "0969-0239",
publisher = "Springer Verlag",
number = "6",

}

RIS (suitable for import to EndNote) - Lataa

TY - JOUR

T1 - Enhanced pre-treatment of cellulose pulp prior to dissolution into NaOH/ZnO

AU - Grönqvist, S.

AU - Kamppuri, T.

AU - Maloney, T.

AU - Vehviläinen, M.

AU - Liitiä, T.

AU - Suurnäkki, A.

PY - 2015/12

Y1 - 2015/12

N2 - As a result of the constantly growing demand for textile fibres interest in utilising cellulose pulps for manufacturing regenerated cellulose fibres is growing. One promising water-based process for the manufacture of regenerated cellulosic products is the Biocelsol process based on an NaOH/ZnO solvent system. The drawback of the Biocelsol process is the need for pre-treatment of the pulp, i.e. long mechanical pre-treatment (up to 5 h) followed by a 2–3-h enzymatic hydrolysis utilising a rather high amount of cellulolytic enzymes. In this work more efficient conditions to carry out the pre-treatment of cellulose pulp prior to dissolution into NaOH/ZnO are presented. Based on the results, cellulase treatment, when carried out in an extruder, can be used to effectively open up and fibrillate the fibres without completely destroying the fibre structure. The molar mass of the pulp treated enzymatically in an extruder was 14 % lower as compared to the state-of-the-art-treated cellulose. As a consequence, the alkaline solutions prepared from the pulp treated enzymatically in an extruder had clearly lower dope viscosities regarding the cellulose content than the solutions prepared from the state-of-the-art-treated pulp. This enabled increasing the cellulose content in the dope up to 7 % (w/w) without increasing the dope viscosity.

AB - As a result of the constantly growing demand for textile fibres interest in utilising cellulose pulps for manufacturing regenerated cellulose fibres is growing. One promising water-based process for the manufacture of regenerated cellulosic products is the Biocelsol process based on an NaOH/ZnO solvent system. The drawback of the Biocelsol process is the need for pre-treatment of the pulp, i.e. long mechanical pre-treatment (up to 5 h) followed by a 2–3-h enzymatic hydrolysis utilising a rather high amount of cellulolytic enzymes. In this work more efficient conditions to carry out the pre-treatment of cellulose pulp prior to dissolution into NaOH/ZnO are presented. Based on the results, cellulase treatment, when carried out in an extruder, can be used to effectively open up and fibrillate the fibres without completely destroying the fibre structure. The molar mass of the pulp treated enzymatically in an extruder was 14 % lower as compared to the state-of-the-art-treated cellulose. As a consequence, the alkaline solutions prepared from the pulp treated enzymatically in an extruder had clearly lower dope viscosities regarding the cellulose content than the solutions prepared from the state-of-the-art-treated pulp. This enabled increasing the cellulose content in the dope up to 7 % (w/w) without increasing the dope viscosity.

KW - Biocelsol

KW - Cellulose dissolution

KW - Dissolving pulp

KW - Enzymatic hydrolysis

KW - Porosity

KW - Pre-treatment

KW - Solute exclusion

UR - http://www.scopus.com/inward/record.url?scp=84942026378&partnerID=8YFLogxK

U2 - 10.1007/s10570-015-0742-8

DO - 10.1007/s10570-015-0742-8

M3 - Article

VL - 22

SP - 3981

EP - 3990

JO - Cellulose

JF - Cellulose

SN - 0969-0239

IS - 6

ER -