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
Dissolution state of cellulose in aqueous systems. 2. Acidic solvents
Univ Coimbra, Dept Chem, P-3004535 Coimbra, Portugal..
Univ Algarve, Fac Sci & Technol MEDITBIO, Campus Gambelas,Ed 8, P-8005139 Faro, Portugal..
Univ Coimbra, Dept Chem, P-3004535 Coimbra, Portugal..
Lund Univ, Ctr Chem & Chem Engn, Dept Chem, Div Phys Chem, SE-22100 Lund, Sweden..
Show others and affiliations
2016 (English)In: Carbohydrate Polymers, ISSN 0144-8617, E-ISSN 1879-1344, Vol. 151, 707-715 p.Article in journal (Refereed) Published
Abstract [en]

Cellulose is insoluble in water but can be dissolved in strong acidic or alkaline conditions. How well dissolved cellulose is in solution and how it organizes are key questions often neglected in literature. The typical low pH required for dissolving cellulose in acidic solvents limits the use of typical characterization techniques. In this respect, Polarization Transfer Solid State NMR (PT ssNMR) emerges as a reliable alternative. In this work, combining PT ssNMR, microscopic techniques and X-ray diffraction, a set of different acidic systems (phosphoric acid/water, sulfuric acid/glycerol and zinc chloride/water) is investigated. The studied solvent systems are capable to efficiently dissolve cellulose, although degradation occurs to some extent. PT ssNMR is capable to identify the liquid and solid fractions of cellulose, the degradation products and it is also sensitive to gelation. The materials regenerated from the acidic dopes were found to be highly sensitive to the solvent system and to the presence of amphiphilic additives in solution.

Place, publisher, year, edition, pages
2016. Vol. 151, 707-715 p.
Keyword [en]
Cellulose ionization, PT ssNMR, Acidic solvents, Molecular organization, Gelation, Dissolution
National Category
Chemical Engineering
Identifiers
URN: urn:nbn:se:miun:diva-28796DOI: 10.1016/j.carbpol.2016.06.015ISI: 000380943900081PubMedID: 27474617Scopus ID: 2-s2.0-84975503543OAI: oai:DiVA.org:miun-28796DiVA: diva2:971457
Available from: 2016-09-16 Created: 2016-09-16 Last updated: 2016-12-22Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full textPubMedScopus

Search in DiVA

By author/editor
Lindman, Björn
By organisation
Department of Chemical Engineering
In the same journal
Carbohydrate Polymers
Chemical Engineering

Search outside of DiVA

GoogleGoogle Scholar

Altmetric score

Total: 191 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