Effect of acid and enzymatic treatments of TCF dissolving pulp on the properties of wet spun cellulosic fibres

M. Vehviläinen, T. Kamppuri, P. Nousiainen, Anne Kallioinen, Matti Siika-aho, K. E. Christoffersson, M. Rom, J. Janicki

Research output: Contribution to journalArticleScientificpeer-review

15 Citations (Scopus)

Abstract

Dissolving-grade softwood pulp was treated with EG-rich enzymes and hot diluted sulphuric acid, to decrease the molecular weight of cellulose. The treated samples were dissolved in aqueous sodium zincate and spun into cellulosic fibres by a wet spinning method. The effects of cellulose concentration in the spinning solution and of cellulose molecular weight on the fibre properties were studied. The molecular weight (Mw) of the treated cellulose decreased by 38 to 63%, depending on the treatment parameters. The falling ball viscosity of the alkaline solution prepared from the differently treated pulps correlated linearly with the Mw of the treated cellulose. At constant Mw of cellulose, the tenacity of the obtained wet spun fibres correlated positively with the cellulose concentration of the spinning solution. However, a higher cellulose concentration could not compensate the lowered Mw as to the fibre properties.
Original languageEnglish
Pages (from-to)147-151
Number of pages5
JournalCellulose chemistry and technology
Volume44
Issue number4-6
Publication statusPublished - 2010
MoE publication typeA1 Journal article-refereed

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Cellulose
Pulp
Acids
Fibers
Molecular weight
Tenacity
Softwoods
Enzymes
Sodium
Viscosity

Keywords

  • Cellulosic fibres
  • Enzymatic treatment of cellulose
  • Wet spinning

Cite this

Vehviläinen, M., Kamppuri, T., Nousiainen, P., Kallioinen, A., Siika-aho, M., Christoffersson, K. E., ... Janicki, J. (2010). Effect of acid and enzymatic treatments of TCF dissolving pulp on the properties of wet spun cellulosic fibres. Cellulose chemistry and technology, 44(4-6), 147-151.
Vehviläinen, M. ; Kamppuri, T. ; Nousiainen, P. ; Kallioinen, Anne ; Siika-aho, Matti ; Christoffersson, K. E. ; Rom, M. ; Janicki, J. / Effect of acid and enzymatic treatments of TCF dissolving pulp on the properties of wet spun cellulosic fibres. In: Cellulose chemistry and technology. 2010 ; Vol. 44, No. 4-6. pp. 147-151.
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abstract = "Dissolving-grade softwood pulp was treated with EG-rich enzymes and hot diluted sulphuric acid, to decrease the molecular weight of cellulose. The treated samples were dissolved in aqueous sodium zincate and spun into cellulosic fibres by a wet spinning method. The effects of cellulose concentration in the spinning solution and of cellulose molecular weight on the fibre properties were studied. The molecular weight (Mw) of the treated cellulose decreased by 38 to 63{\%}, depending on the treatment parameters. The falling ball viscosity of the alkaline solution prepared from the differently treated pulps correlated linearly with the Mw of the treated cellulose. At constant Mw of cellulose, the tenacity of the obtained wet spun fibres correlated positively with the cellulose concentration of the spinning solution. However, a higher cellulose concentration could not compensate the lowered Mw as to the fibre properties.",
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Vehviläinen, M, Kamppuri, T, Nousiainen, P, Kallioinen, A, Siika-aho, M, Christoffersson, KE, Rom, M & Janicki, J 2010, 'Effect of acid and enzymatic treatments of TCF dissolving pulp on the properties of wet spun cellulosic fibres', Cellulose chemistry and technology, vol. 44, no. 4-6, pp. 147-151.

Effect of acid and enzymatic treatments of TCF dissolving pulp on the properties of wet spun cellulosic fibres. / Vehviläinen, M.; Kamppuri, T.; Nousiainen, P.; Kallioinen, Anne; Siika-aho, Matti; Christoffersson, K. E.; Rom, M.; Janicki, J.

In: Cellulose chemistry and technology, Vol. 44, No. 4-6, 2010, p. 147-151.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Effect of acid and enzymatic treatments of TCF dissolving pulp on the properties of wet spun cellulosic fibres

AU - Vehviläinen, M.

AU - Kamppuri, T.

AU - Nousiainen, P.

AU - Kallioinen, Anne

AU - Siika-aho, Matti

AU - Christoffersson, K. E.

AU - Rom, M.

AU - Janicki, J.

PY - 2010

Y1 - 2010

N2 - Dissolving-grade softwood pulp was treated with EG-rich enzymes and hot diluted sulphuric acid, to decrease the molecular weight of cellulose. The treated samples were dissolved in aqueous sodium zincate and spun into cellulosic fibres by a wet spinning method. The effects of cellulose concentration in the spinning solution and of cellulose molecular weight on the fibre properties were studied. The molecular weight (Mw) of the treated cellulose decreased by 38 to 63%, depending on the treatment parameters. The falling ball viscosity of the alkaline solution prepared from the differently treated pulps correlated linearly with the Mw of the treated cellulose. At constant Mw of cellulose, the tenacity of the obtained wet spun fibres correlated positively with the cellulose concentration of the spinning solution. However, a higher cellulose concentration could not compensate the lowered Mw as to the fibre properties.

AB - Dissolving-grade softwood pulp was treated with EG-rich enzymes and hot diluted sulphuric acid, to decrease the molecular weight of cellulose. The treated samples were dissolved in aqueous sodium zincate and spun into cellulosic fibres by a wet spinning method. The effects of cellulose concentration in the spinning solution and of cellulose molecular weight on the fibre properties were studied. The molecular weight (Mw) of the treated cellulose decreased by 38 to 63%, depending on the treatment parameters. The falling ball viscosity of the alkaline solution prepared from the differently treated pulps correlated linearly with the Mw of the treated cellulose. At constant Mw of cellulose, the tenacity of the obtained wet spun fibres correlated positively with the cellulose concentration of the spinning solution. However, a higher cellulose concentration could not compensate the lowered Mw as to the fibre properties.

KW - Cellulosic fibres

KW - Enzymatic treatment of cellulose

KW - Wet spinning

M3 - Article

VL - 44

SP - 147

EP - 151

JO - Cellulose chemistry and technology

JF - Cellulose chemistry and technology

SN - 0576-9787

IS - 4-6

ER -

Vehviläinen M, Kamppuri T, Nousiainen P, Kallioinen A, Siika-aho M, Christoffersson KE et al. Effect of acid and enzymatic treatments of TCF dissolving pulp on the properties of wet spun cellulosic fibres. Cellulose chemistry and technology. 2010;44(4-6):147-151.