<div class="csl-bib-body">
<div class="csl-entry">Rosenau, T., Potthast, A., Hofinger, A., Bacher, M., Yoneda, Y., Mereiter, K., Nakatsubo, F., Jäger, C., French, A., & Kajiwara, K. (2019). Toward a Better Understanding of Cellulose Swelling, Dissolution, and Regeneration on the Molecular Level. In T. Rosenau, A. Potthast, & J. Hell (Eds.), <i>Cellulose Science and Technology: Chemistry, Analysis, and Applications</i> (pp. 99–125). John Wiley & Sons, Inc. https://doi.org/10.1002/9781119217619.ch5</div>
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dc.identifier.uri
http://hdl.handle.net/20.500.12708/190460
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dc.description.abstract
The combination of 13C-perlabeled compounds and NMR spectroscopy allowed insights into the detailed changes of the hydrogen bond in celluloses and cellulose model compounds during swelling, dissolution, and regeneration (precipitation). 13C-perlabeled cellulose allomorphs I and II as well as the model compound methyl 4′-O-methyl-β-d-cellobioside-13C12 were studied as solutes, in combination with the perdeuterated solvents N,N-dimethylacetamide/lithium chloride (DMAc/LiCl), N-methylmorpholine N-oxide monohydrate (NMMO), 1-ethyl-3-methylimidazolium acetate (EMIm-OAc), 1-butyl-3-methylimidazolium acetate (BMIm-OAc) and D2O/urea. Swelling is a reversible stepwise process that mainly involves hydrogen bonds of C2O and C6O while C3O hydrogen bonds remain largely unchanged. For dissolution, the latter bonds are broken so that dissolution mainly depends on C3O. This behavior was the same for all solvents and for both cellulose allomorphs. With regard to H-bond changes, deswelling/precipitation occurs roughly in opposite order of the swelling/dissolution. Upon swelling, solvent molecules increasingly approach C2 and C6, but not C3. Only in dissolved state, the solvent molecules interact also closely with C3. Interestingly, nonclassical-hydrogen bonds are established regioselectively between CH-1 and CH-3, and the solvent in dissolved state so that these CH-hydrogen bonds can be assumed to be a prerequisite to cellulose dissolution, at least for the solvents studied. While more work has to be done to go from idealized model cases to “real-world” pulps, the studies offer for the first time a detailed picture on dynamic changes of H-bonds during swelling, dissolution, and regeneration of cellulose, and help us to better understand the nature of cellulose solvents.
en
dc.language.iso
en
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dc.subject
cellulose
en
dc.title
Toward a Better Understanding of Cellulose Swelling, Dissolution, and Regeneration on the Molecular Level
en
dc.type
Book Contribution
en
dc.type
Buchbeitrag
de
dc.contributor.affiliation
University of Natural Resources and Life Sciences Vienna (BOKU), Austria
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dc.contributor.affiliation
University of Natural Resources and Life Sciences Vienna (BOKU), Austria
-
dc.contributor.affiliation
University of Natural Resources and Life Sciences Vienna (BOKU), Austria
-
dc.contributor.affiliation
University of Natural Resources and Life Sciences Vienna (BOKU), Austria
-
dc.contributor.affiliation
Shizuoka University, Japan
-
dc.contributor.affiliation
Kyoto University, Japan
-
dc.contributor.affiliation
Bundesanstalt für Materialforschung und -prüfung (BAM), Germany
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dc.contributor.affiliation
U.S. Department of Agriculture, USA
-
dc.contributor.affiliation
Shinshu University, Japan
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dc.contributor.editoraffiliation
University of Natural Resources and Life Sciences Vienna (BOKU), Austria
-
dc.contributor.editoraffiliation
University of Natural Resources and Life Sciences Vienna (BOKU), Austria
-
dc.contributor.editoraffiliation
University of Natural Resources and Life Sciences Vienna (BOKU), Austria
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dc.relation.isbn
978-1-119-21758-9
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dc.relation.doi
10.1002/9781119217619
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dc.description.startpage
99
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dc.description.endpage
125
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dc.type.category
Edited Volume Contribution
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tuw.booktitle
Cellulose Science and Technology: Chemistry, Analysis, and Applications
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tuw.relation.publisher
John Wiley & Sons, Inc.
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tuw.book.chapter
5
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tuw.researchinfrastructure
Röntgenzentrum
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tuw.researchTopic.id
E5
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tuw.researchTopic.name
Efficient Utilisation of Material Resources
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tuw.researchTopic.value
100
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tuw.publication.orgunit
E164 - Institut für Chemische Technologien und Analytik
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tuw.publisher.doi
10.1002/9781119217619.ch5
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dc.description.numberOfPages
27
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tuw.author.orcid
0000-0002-6636-9260
-
tuw.author.orcid
0000-0002-4307-4849
-
tuw.author.orcid
0000-0002-6220-6448
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tuw.author.orcid
0000-0001-9827-0444
-
tuw.editor.orcid
0000-0002-6636-9260
-
tuw.editor.orcid
0000-0003-1981-2271
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wb.sciencebranch
Chemie
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wb.sciencebranch.oefos
1040
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wb.sciencebranch.value
100
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item.openairetype
book part
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item.openairecristype
http://purl.org/coar/resource_type/c_3248
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item.languageiso639-1
en
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item.fulltext
no Fulltext
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item.cerifentitytype
Publications
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item.grantfulltext
none
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crisitem.author.dept
University of Natural Resources and Life Sciences Vienna (BOKU), Austria
-
crisitem.author.dept
University of Natural Resources and Life Sciences Vienna (BOKU), Austria
-
crisitem.author.dept
University of Natural Resources and Life Sciences Vienna (BOKU), Austria
-
crisitem.author.dept
University of Natural Resources and Life Sciences Vienna (BOKU), Austria
-
crisitem.author.dept
Shizuoka University, Japan
-
crisitem.author.dept
E164 - Institut für Chemische Technologien und Analytik
-
crisitem.author.dept
Kyoto University, Japan
-
crisitem.author.dept
Bundesanstalt für Materialforschung und -prüfung (BAM), Germany