Fiber morphology responsible for restricted solubility of softwood kraft pulp in LiCl/DMAc

Tiina Liitiä; B. O. Hortling; Piia Honkonen; Asko Sneck; Olli Joutsimo; Tarja Tamminen

Fiber morphology responsible for restricted solubility of softwood kraft pulp in LiCl/DMAc

Tiina Liitiä^*, B. O. Hortling, Piia Honkonen, Asko Sneck, Olli Joutsimo, Tarja Tamminen

^*Corresponding author for this work

Not published at VTT

Oy Keskuslaboratorio - Centrallaboratorium Ab (KCL)

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

3 Citations (Scopus)

Abstract

Solid-state NMR spectroscopy and FTIR microspectroscopy were used to investigate the contribution of fiber ultrastructure to the limited solubility of softwood kraft pulp in LiCl/DMAc. The insoluble residue was enriched with glucomannan, and the NMR studies suggest that cellulose fibrils are covered with linear glucomannan, which together may form an insoluble complex. Damage to the fiber ultrastructure by mechanical treatment resulted in lower crystallinity and improved solubility. The interaction between cellulose and glucomannan was probably also destroyed in damaged fibers, improving the accessibility by the solvent. The insoluble material was found to contain highly swollen fibers with very low crystallinity, but also some intact fibers with nearly original pulp crystallinity.

Original language	English
Title of host publication	Appita Conference and Exhibition (59th : 2005 : Auckland, N.Z.)
Pages	371-375
Number of pages	5
Volume	2
Publication status	Published - 1 Dec 2005
MoE publication type	Not Eligible
Event	59th Appita Annual Conference and Exhibition: Incorporating the 13th ISWFPC (International Symposium on Wood, Fibre and Pulping Chemistry) - Auckland, New Zealand Duration: 16 May 2005 → 19 May 2005 Conference number: 59

Publication series

Series	Appita Annual Conference Proceedings
Volume	59
ISSN	1443-5454

Conference

Conference	59th Appita Annual Conference and Exhibition
Country/Territory	New Zealand
City	Auckland
Period	16/05/05 → 19/05/05

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Cite this

@inproceedings{96841465c2d7481aa67357b859006430,

title = "Fiber morphology responsible for restricted solubility of softwood kraft pulp in LiCl/DMAc",

abstract = "Solid-state NMR spectroscopy and FTIR microspectroscopy were used to investigate the contribution of fiber ultrastructure to the limited solubility of softwood kraft pulp in LiCl/DMAc. The insoluble residue was enriched with glucomannan, and the NMR studies suggest that cellulose fibrils are covered with linear glucomannan, which together may form an insoluble complex. Damage to the fiber ultrastructure by mechanical treatment resulted in lower crystallinity and improved solubility. The interaction between cellulose and glucomannan was probably also destroyed in damaged fibers, improving the accessibility by the solvent. The insoluble material was found to contain highly swollen fibers with very low crystallinity, but also some intact fibers with nearly original pulp crystallinity.",

author = "Tiina Liiti{\"a} and Hortling, {B. O.} and Piia Honkonen and Asko Sneck and Olli Joutsimo and Tarja Tamminen",

year = "2005",

month = dec,

day = "1",

language = "English",

volume = "2",

series = "Appita Annual Conference Proceedings",

publisher = "Appita Inc.",

pages = "371--375",

booktitle = "Appita Conference and Exhibition (59th : 2005 : Auckland, N.Z.)",

note = "59th Appita Annual Conference and Exhibition : Incorporating the 13th ISWFPC (International Symposium on Wood, Fibre and Pulping Chemistry) ; Conference date: 16-05-2005 Through 19-05-2005",

}

Liitiä, T, Hortling, BO, Honkonen, P, Sneck, A, Joutsimo, O & Tamminen, T 2005, Fiber morphology responsible for restricted solubility of softwood kraft pulp in LiCl/DMAc. in Appita Conference and Exhibition (59th : 2005 : Auckland, N.Z.). vol. 2, Appita Annual Conference Proceedings, vol. 59, pp. 371-375, 59th Appita Annual Conference and Exhibition, Auckland, New Zealand, 16/05/05. <https://search.informit.com.au/documentSummary;dn=343697508851788;res=IELENG>

Fiber morphology responsible for restricted solubility of softwood kraft pulp in LiCl/DMAc. / Liitiä, Tiina; Hortling, B. O.; Honkonen, Piia et al.
Appita Conference and Exhibition (59th : 2005 : Auckland, N.Z.). Vol. 2 2005. p. 371-375 (Appita Annual Conference Proceedings, Vol. 59).

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

TY - GEN

T1 - Fiber morphology responsible for restricted solubility of softwood kraft pulp in LiCl/DMAc

AU - Liitiä, Tiina

AU - Hortling, B. O.

AU - Honkonen, Piia

AU - Sneck, Asko

AU - Joutsimo, Olli

AU - Tamminen, Tarja

N1 - Conference code: 59

PY - 2005/12/1

Y1 - 2005/12/1

N2 - Solid-state NMR spectroscopy and FTIR microspectroscopy were used to investigate the contribution of fiber ultrastructure to the limited solubility of softwood kraft pulp in LiCl/DMAc. The insoluble residue was enriched with glucomannan, and the NMR studies suggest that cellulose fibrils are covered with linear glucomannan, which together may form an insoluble complex. Damage to the fiber ultrastructure by mechanical treatment resulted in lower crystallinity and improved solubility. The interaction between cellulose and glucomannan was probably also destroyed in damaged fibers, improving the accessibility by the solvent. The insoluble material was found to contain highly swollen fibers with very low crystallinity, but also some intact fibers with nearly original pulp crystallinity.

AB - Solid-state NMR spectroscopy and FTIR microspectroscopy were used to investigate the contribution of fiber ultrastructure to the limited solubility of softwood kraft pulp in LiCl/DMAc. The insoluble residue was enriched with glucomannan, and the NMR studies suggest that cellulose fibrils are covered with linear glucomannan, which together may form an insoluble complex. Damage to the fiber ultrastructure by mechanical treatment resulted in lower crystallinity and improved solubility. The interaction between cellulose and glucomannan was probably also destroyed in damaged fibers, improving the accessibility by the solvent. The insoluble material was found to contain highly swollen fibers with very low crystallinity, but also some intact fibers with nearly original pulp crystallinity.

UR - http://www.scopus.com/inward/record.url?scp=29344443494&partnerID=8YFLogxK

M3 - Conference article in proceedings

AN - SCOPUS:29344443494

VL - 2

T3 - Appita Annual Conference Proceedings

SP - 371

EP - 375

BT - Appita Conference and Exhibition (59th : 2005 : Auckland, N.Z.)

T2 - 59th Appita Annual Conference and Exhibition

Y2 - 16 May 2005 through 19 May 2005

ER -

Fiber morphology responsible for restricted solubility of softwood kraft pulp in LiCl/DMAc

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