Mid Sweden University

miun.sePublications
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Probing cellulose–solvent interactions with self-diffusion NMR: Onium hydroxide concentration and co-solvent effects
Mid Sweden University, Faculty of Science, Technology and Media, Department of Engineering, Mathematics, and Science Education (2023-). Universidade do Algarve. (FSCN)
Show others and affiliations
2023 (English)In: Carbohydrate Polymers, ISSN 0144-8617, E-ISSN 1879-1344, Vol. 303, article id 120440Article in journal (Refereed) Published
Abstract [en]

The molecular self-diffusion coefficients were accessed, for the first time, in solutions of microcrystalline cellulose, dissolved in 30 wt% and 55 wt% aqueous tetrabutylammonium hydroxide, TBAH (aq), and in mixtures of 40 wt% TBAH (aq) with an organic co-solvent, dimethylsulfoxide (DMSO), through pulsed field gradient stimulated echo NMR measurements. A two-state model was applied to estimate α (i.e., average number of ions that “bind” to each anhydroglucose unit) and Pb (i.e., fraction of “bound” molecules of DMSO, TBAH or H2O to cellulose) parameters. The α values suggest that TBA+ ions can bind to cellulose within 0.5 TBA+ to 2.3 TBA+/AGU. On the other hand, the Pb parameter increases when raising cellulose concentration for TBA+, DMSO and water in all solvent systems. Data suggests that TBAH interacts with the ionized OH groups from cellulose forming a sheath of bulky TBA+ counterions which consequently leads to steric hindrance between cellulose chains. 

Place, publisher, year, edition, pages
2023. Vol. 303, article id 120440
Keywords [en]
Cellulose dissolution, Dimethylsulfoxide, Nuclear magnetic resonance, Self-diffusion, Tetrabutylammonium hydroxide
National Category
Physical Chemistry
Identifiers
URN: urn:nbn:se:miun:diva-46690DOI: 10.1016/j.carbpol.2022.120440ISI: 000906242600001Scopus ID: 2-s2.0-85143870653OAI: oai:DiVA.org:miun-46690DiVA, id: diva2:1720892
Available from: 2022-12-20 Created: 2022-12-20 Last updated: 2023-01-19Bibliographically approved

Open Access in DiVA

No full text in DiVA

Other links

Publisher's full textScopus

Authority records

Medronho, Bruno

Search in DiVA

By author/editor
Medronho, Bruno
By organisation
Department of Engineering, Mathematics, and Science Education (2023-)
In the same journal
Carbohydrate Polymers
Physical Chemistry

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 77 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf