Repository logo
 
Publication

Molecular mobility, composition and structure analysis in glycerol plasticised chitosan films

2014-02-01Journal article Restricted access
Simple item page
dc.contributor.authorFundo, Joana F.
dc.contributor.authorFernandes, Rui
dc.contributor.authorAlmeida, Pedro L.
dc.contributor.authorCarvalho, Alexandra
dc.contributor.authorFeio, Gabriel
dc.contributor.authorSilva, Cristina L. M.
dc.contributor.authorQuintas, Mafalda A. C.
dc.date.accessioned2015-08-25T10:41:46Z
dc.date.available2015-08-25T10:41:46Z
dc.date.issued2014-02-01
dc.description.abstractThis study was developed with the purpose to investigate the effect of polysaccharide/plasticiser concentration on the microstructure and molecular dynamics of polymeric film systems, using transmission electron microscope imaging (TEM) and nuclear magnetic resonance (NMR) techniques. Experiments were carried out in chitosan/glycerol films prepared with solutions of different composition. The films obtained after drying and equilibration were characterised in terms of composition, thickness and water activity. Results show that glycerol quantities used in film forming solutions were responsible for films composition; while polymer/total plasticiser ratio in the solution determined the thickness (and thus structure) of the films. These results were confirmed by TEM. NMR allowed understanding the films molecular rearrangement. Two different behaviours for the two components analysed, water and glycerol were observed: the first is predominantly moving free in the matrix, while glycerol is mainly bounded to the chitosan chain. (C) 2013 Elsevier Ltd. All rights reserved.por
dc.identifier.citationFUNDO, Joana; [et al] – Molecular mobility, composition and structure analysis in glycerol plasticised chitosan films. Food Chemistry. ISSN: 0308-8146. Vol. 144 (2014), pp. 2-8por
dc.identifier.doi10.1016/j.foodchem.2013.05.127
dc.identifier.issn0308-8146
dc.identifier.issn1873-7072
dc.identifier.urihttp://hdl.handle.net/10400.21/4985
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherElsevier Science LTDpor
dc.relation.publisherversionhttp://www.sciencedirect.com/science/article/pii/S0308814613007334#
dc.subjectEdible filmspor
dc.subjectMicrostructurepor
dc.subjectNMRpor
dc.subjectMolecular dynamicspor
dc.subjectStructure functionpor
dc.subjectWater behaviourpor
dc.titleMolecular mobility, composition and structure analysis in glycerol plasticised chitosan filmspor
dc.typejournal article
dspace.entity.typePublication
oaire.citation.conferencePlaceOxonpor
oaire.citation.endPage8por
oaire.citation.startPage2por
oaire.citation.titleFood Chemistrypor
oaire.citation.volume144por
person.familyNameFundo
person.familyNameMarques de Almeida
person.familyNameFeio
person.givenNameJoana F.
person.givenNamePedro
person.givenNameGabriel
person.identifier1274614
person.identifier.ciencia-idA11A-7819-9522
person.identifier.ciencia-id0218-71B2-2DE0
person.identifier.orcid0000-0002-9208-7443
person.identifier.orcid0000-0001-7356-8455
person.identifier.orcid0000-0003-1257-5824
person.identifier.ridE-9585-2015
person.identifier.ridB-4356-2009
person.identifier.ridJ-3695-2013
person.identifier.scopus-author-id24068634500
person.identifier.scopus-author-id57190384213
person.identifier.scopus-author-id24484581400
rcaap.rightsclosedAccesspor
rcaap.typearticlepor
relation.isAuthorOfPublication2981ae02-ff6e-400c-a9ae-81d9629d8e35
relation.isAuthorOfPublication429b6d71-328e-42b3-8151-15493de249b8
relation.isAuthorOfPublicationa15cb9fe-ebbc-4450-a85c-77e4680b1967
relation.isAuthorOfPublication.latestForDiscovery429b6d71-328e-42b3-8151-15493de249b8

Files

Original bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
Molecular mobility.pdf
Size:
1.1 MB
Format:
Adobe Portable Document Format
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections

ISEL - Física - Artigos