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
Interfacial activity and emulsion stabilization of dissolved cellulose
Mid Sweden University, Faculty of Science, Technology and Media, Department of Chemical Engineering.
RISE, Stockholm.
RISE, Stockholm.
Mid Sweden University, Faculty of Science, Technology and Media, Department of Chemical Engineering.
Show others and affiliations
2019 (English)In: Journal of Molecular Liquids, ISSN 0167-7322, E-ISSN 1873-3166, Vol. 292, article id 111325Article in journal (Refereed) Published
Abstract [en]

Some aspects of the interfacial behavior of cellulose dissolved in an aqueous solvent were investigated. Cellulose was found to significantly decrease the interfacial tension (IFT) between paraffin oil and 85 wt% phosphoric acid aqueous solutions. This decrease was similar in magnitude to that displayed by non-ionic cellulose derivatives. Cellulose's interfacial activity indicated a significant amphiphilic character and that the interfacial activity of cellulose derivatives is not only related to the derivatization but inherent in the cellulose backbone. This finding suggests that cellulose would have the ability of stabilizing dispersions, like oil-in-water emulsions in a similar way as a large number of cellulose derivatives. In its molecularly dissolved state, cellulose proved to be able to stabilize emulsions of paraffin in the polar solvent on a short-term. However, long-term stability against drop-coalescence was possible to achieve by a slight change in the amphiphilicity of cellulose, effected by a slight increase in pH. These emulsions exhibited excellent stability against coalescence/oiling-off over a period of one year. Ageing of the cellulose solution before emulsification (resulting in molecular weight reduction) was found to favour the creation of smaller droplets. 

Place, publisher, year, edition, pages
2019. Vol. 292, article id 111325
Keywords [en]
Adsorption, Amphiphilicity, Cellulose molecules, Emulsions, Interfacial activity, Oil-water interface
National Category
Chemical Engineering
Identifiers
URN: urn:nbn:se:miun:diva-36838DOI: 10.1016/j.molliq.2019.111325ISI: 000488658900015Scopus ID: 2-s2.0-85069688256OAI: oai:DiVA.org:miun-36838DiVA, id: diva2:1342202
Note

Available under a Creative Commons license https://creativecommons.org/licenses/by/4.0/

Available from: 2019-08-13 Created: 2019-08-13 Last updated: 2019-11-13Bibliographically approved

Open Access in DiVA

fulltext(1664 kB)97 downloads
File information
File name FULLTEXT01.pdfFile size 1664 kBChecksum SHA-512
c79b52cbdc23482a475139b3519778cfc3cc94f6570c94310dd3096e1cf9f134bfab4c2888c52ab88ed0b25461379251c077cfa87f334b9c64aa38c8775ac2d7
Type fulltextMimetype application/pdf

Other links

Publisher's full textScopus

Authority records BETA

Costa, CarolinaLindman, BjörnEdlund, HåkanNorgren, Magnus

Search in DiVA

By author/editor
Costa, CarolinaLindman, BjörnEdlund, HåkanNorgren, Magnus
By organisation
Department of Chemical Engineering
In the same journal
Journal of Molecular Liquids
Chemical Engineering

Search outside of DiVA

GoogleGoogle Scholar
Total: 97 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 103 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