Filament spinning of unbleached birch kraft pulps: Effect of pulping intensity on the processability and the fiber properties

Tutkimustuotos: Lehtiartikkelivertaisarvioitu

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Filament spinning of unbleached birch kraft pulps : Effect of pulping intensity on the processability and the fiber properties. / Ma, Yibo; Stubb, Jonas; Kontro, Inkeri; Nieminen, Kaarlo; Hummel, Michael; Sixta, Herbert.

julkaisussa: Carbohydrate Polymers, Vuosikerta 179, 01.01.2018, s. 145-151.

Tutkimustuotos: Lehtiartikkelivertaisarvioitu

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Bibtex - Lataa

@article{fb68ed0b2bc14c19848e07f510646430,
title = "Filament spinning of unbleached birch kraft pulps: Effect of pulping intensity on the processability and the fiber properties",
abstract = "Man-made lignocellulosic fibres were successfully prepared from unbleached birch kraft pulps by using the Ioncell-F technology. Pulps with different lignin content were produced by tailored kraft pulping with varying intensity. The degree of polymerization of the pulps was adjusted by acid-catalyzed hydrolysis and electron beam treatment. All substrates were completely soluble in 1,5-diazabicyclo[4.3.0]non-5-enium acetate ([DBNH]OAc) and the respective solutions were spinnable to yield fibres with good to excellent mechanical properties despite the use of only mildly refined wood pulp. The tensile properties decreased gradually as the lignin concentration in the fibres increased. Changes in the chemical composition also affected the structure and morphology of the fibres. Both the molecular orientation and the crystallinity decreased while the presence of lignin enhanced the water accessibility. The effects of the crystallite size and lignin content on monolayer water adsorption are discussed.",
keywords = "Fibres, Ionic liquid, Lignocellulose, Refining, Spinning",
author = "Yibo Ma and Jonas Stubb and Inkeri Kontro and Kaarlo Nieminen and Michael Hummel and Herbert Sixta",
year = "2018",
month = "1",
day = "1",
doi = "10.1016/j.carbpol.2017.09.079",
language = "English",
volume = "179",
pages = "145--151",
journal = "Carbohydrate Polymers",
issn = "0144-8617",

}

RIS - Lataa

TY - JOUR

T1 - Filament spinning of unbleached birch kraft pulps

T2 - Effect of pulping intensity on the processability and the fiber properties

AU - Ma, Yibo

AU - Stubb, Jonas

AU - Kontro, Inkeri

AU - Nieminen, Kaarlo

AU - Hummel, Michael

AU - Sixta, Herbert

PY - 2018/1/1

Y1 - 2018/1/1

N2 - Man-made lignocellulosic fibres were successfully prepared from unbleached birch kraft pulps by using the Ioncell-F technology. Pulps with different lignin content were produced by tailored kraft pulping with varying intensity. The degree of polymerization of the pulps was adjusted by acid-catalyzed hydrolysis and electron beam treatment. All substrates were completely soluble in 1,5-diazabicyclo[4.3.0]non-5-enium acetate ([DBNH]OAc) and the respective solutions were spinnable to yield fibres with good to excellent mechanical properties despite the use of only mildly refined wood pulp. The tensile properties decreased gradually as the lignin concentration in the fibres increased. Changes in the chemical composition also affected the structure and morphology of the fibres. Both the molecular orientation and the crystallinity decreased while the presence of lignin enhanced the water accessibility. The effects of the crystallite size and lignin content on monolayer water adsorption are discussed.

AB - Man-made lignocellulosic fibres were successfully prepared from unbleached birch kraft pulps by using the Ioncell-F technology. Pulps with different lignin content were produced by tailored kraft pulping with varying intensity. The degree of polymerization of the pulps was adjusted by acid-catalyzed hydrolysis and electron beam treatment. All substrates were completely soluble in 1,5-diazabicyclo[4.3.0]non-5-enium acetate ([DBNH]OAc) and the respective solutions were spinnable to yield fibres with good to excellent mechanical properties despite the use of only mildly refined wood pulp. The tensile properties decreased gradually as the lignin concentration in the fibres increased. Changes in the chemical composition also affected the structure and morphology of the fibres. Both the molecular orientation and the crystallinity decreased while the presence of lignin enhanced the water accessibility. The effects of the crystallite size and lignin content on monolayer water adsorption are discussed.

KW - Fibres

KW - Ionic liquid

KW - Lignocellulose

KW - Refining

KW - Spinning

UR - http://www.scopus.com/inward/record.url?scp=85030309379&partnerID=8YFLogxK

U2 - 10.1016/j.carbpol.2017.09.079

DO - 10.1016/j.carbpol.2017.09.079

M3 - Article

VL - 179

SP - 145

EP - 151

JO - Carbohydrate Polymers

JF - Carbohydrate Polymers

SN - 0144-8617

ER -

ID: 15872086