Change search
ReferencesLink to record
Permanent link

Direct link
Influence of citric acid and curing on moisture sorption, diffusion and permeability of starch films
KTH, School of Chemical Science and Engineering (CHE), Fibre and Polymer Technology.
2013 (English)In: Carbohydrate Polymers, ISSN 0144-8617, E-ISSN 1879-1344, Vol. 94, no 2, 765-772 p.Article in journal (Refereed) Published
Abstract [en]

Starch films with different amounts of citric acid produced by solution casting were subjected to different curing temperatures and compared with films plasticized with glycerol. The films were tested in a controlled moisture generator, which enabled the moisture sorption to be measured and the diffusion coefficient and water vapor permeability to be calculated. It was shown that increasing the amount of citric acid added led to a reduction in the equilibrium moisture content, diffusion coefficient and water vapor permeability of the films, the values of which were all considerably lower than the values obtained for the films plasticized by glycerol. It was also seen that curing the film with 30 pph citric acid at 150 degrees C led to a significant reduction in the equilibrium moisture content, the diffusion coefficient and the water vapor permeability at high relative humidity which suggests that crosslinking occurred. The calculated water vapor permeability data were comparable with the value obtained with direct measurements.

Place, publisher, year, edition, pages
2013. Vol. 94, no 2, 765-772 p.
Keyword [en]
Starch, Citric acid, Cross-linking, Diffusion, Moisture content, Permeability
National Category
Chemical Sciences
URN: urn:nbn:se:kth:diva-123102DOI: 10.1016/j.carbpol.2013.02.006ISI: 000317946200007ScopusID: 2-s2.0-84874936029OAI: diva2:624676

QC 20130603

Available from: 2013-06-03 Created: 2013-06-03 Last updated: 2013-06-03Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full textScopus

Search in DiVA

By author/editor
Hedenqvist, Mikael S.
By organisation
Fibre and Polymer Technology
In the same journal
Carbohydrate Polymers
Chemical Sciences

Search outside of DiVA

GoogleGoogle Scholar
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

Altmetric score

Total: 69 hits
ReferencesLink to record
Permanent link

Direct link