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

2014Journal article Restricted access
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dc.contributor.authorFundo, Joana
dc.contributor.authorFernandes, Rui
dc.contributor.authorAlmeida, Pedro M.
dc.contributor.authorCarvalho, Alexandra
dc.contributor.authorFeio, Gabriel
dc.contributor.authorSilva, Cristina L. M.
dc.contributor.authorQuintas, Mafalda
dc.date.accessioned2014-05-07T10:47:24Z
dc.date.available2014-05-07T10:47:24Z
dc.date.issued2014
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.por
dc.description.versioninfo:eu-repo/semantics/publishedVersion
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), p. 2-8por
dc.identifier.doi10.1016/j.foodchem.2013.05.127
dc.identifier.eid84886420587
dc.identifier.pmid24099535
dc.identifier.urihttp://hdl.handle.net/10400.14/14209
dc.identifier.wos000326910300002
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherElsevierpor
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.awardURIinfo:eu-repo/grantAgreement/FCT/SFRH/SFRH%2FBD%2F62176%2F2009/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/SFRH/SFRH%2FBPD%2F41715%2F2007/PT
oaire.citation.endPage8
oaire.citation.startPage2
oaire.citation.titleFood Chemistry
oaire.citation.volume144
oaire.fundingStreamSFRH
oaire.fundingStreamSFRH
person.familyNameFundo
person.familyNameFernandes
person.familyNameMarques de Almeida
person.familyNameCarvalho
person.familyNameFeio
person.familyNameSilva
person.givenNameJoana F.
person.givenNameRui
person.givenNamePedro
person.givenNameAlexandra
person.givenNameGabriel
person.givenNameCristina
person.identifier1274614
person.identifier1473674
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person.identifier.orcid0000-0003-1257-5824
person.identifier.orcid0000-0002-0495-3955
person.identifier.ridE-9585-2015
person.identifier.ridS-4508-2017
person.identifier.ridB-4356-2009
person.identifier.ridH-8719-2017
person.identifier.ridJ-3695-2013
person.identifier.ridA-3568-2013
person.identifier.scopus-author-id24068634500
person.identifier.scopus-author-id56835103600
person.identifier.scopus-author-id7102848158
person.identifier.scopus-author-id24484581400
person.identifier.scopus-author-id7201387397
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsrestrictedAccesspor
rcaap.typearticlepor
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