uu.seUppsala University Publications
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association
  • 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
Experimental and Theoretical Evaluation of the Solubility/Insolubility of Spruce Xylan (Arabino Glucuronoxylan)
Royal Inst Technol, Sch Chem Sci & Engn Fibre & Polymer Technol, Teknikringen 56-58, SE-10044 Stockholm, Sweden;Wallenberg Wood Sci Ctr WWSC, Teknikringen 56-58, SE-10044 Stockholm, Sweden.
Univ Guadalajara, Wood Cellulose & Paper Res Dept, Guadalajara, Jalisco, Mexico.ORCID iD: 0000-0002-5821-2132
Univ Guadalajara, Wood Cellulose & Paper Res Dept, Guadalajara, Jalisco, Mexico;Chalmers Univ Technol, WWSC, Gothenburg, Sweden.ORCID iD: 0000-0002-8154-8590
Wallenberg Wood Sci Ctr WWSC, Teknikringen 56-58, SE-10044 Stockholm, Sweden;Albanova Univ Ctr, Royal Inst Technol, Div Glycosci, Sch Biotechnol, SE-10691 Stockholm, Sweden.ORCID iD: 0000-0003-3572-7798
Show others and affiliations
2019 (English)In: Biomacromolecules, ISSN 1525-7797, E-ISSN 1526-4602, Vol. 20, no 3, p. 1263-1270Article in journal (Refereed) Published
Abstract [en]

The molecular solubility of softwood arabinoglucuronoxylan (AGX) has been thoroughly investigated, and it has been shown that the chemical and physical structures of the extracted hemicellulose are not significantly influenced by different purification steps, but a transient molecular solubility of AGX was observed in aqueous media at low concentrations (1 g/L) when the dissolved macromolecules had a hydrodynamic diameter of up to 10 nm. A phase separation was detected when the concentration was increased to 15 g/L leading to an association of the smaller molecules into fractal structures with a considerably larger diameter, even though the dispersions were still transparent to ocular inspection. Dynamic Light Scattering and Cryo-Transmission Electron Microscopy showed dimensions in the range of 1000 nm. The phase separation of the sample was further characterized by estimating the chi-interaction parameter of AGX in water using the Flory Huggins theory, and the results supported that water is a poor solvent for AGX. This behavior is crucial when films and hydrogels based on these biopolymers are made, since the association will dramatically affect barrier and mechanical properties of films made from these materials.

Place, publisher, year, edition, pages
AMER CHEMICAL SOC , 2019. Vol. 20, no 3, p. 1263-1270
National Category
Biochemistry and Molecular Biology
Identifiers
URN: urn:nbn:se:uu:diva-380475DOI: 10.1021/acs.biomac.8b01686ISI: 000461270500013PubMedID: 30689362OAI: oai:DiVA.org:uu-380475DiVA, id: diva2:1305084
Funder
Knut and Alice Wallenberg FoundationAvailable from: 2019-04-15 Created: 2019-04-15 Last updated: 2019-04-15Bibliographically approved

Open Access in DiVA

No full text in DiVA

Other links

Publisher's full textPubMed

Authority records BETA

Hansson, Per

Search in DiVA

By author/editor
Escalante, AlfredoToriz, GuillermoVilaplana, FranciscoHansson, Per
By organisation
Department of Pharmacy
In the same journal
Biomacromolecules
Biochemistry and Molecular Biology

Search outside of DiVA

GoogleGoogle Scholar

doi
pubmed
urn-nbn

Altmetric score

doi
pubmed
urn-nbn
Total: 3 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association
  • 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