Repository logo
 
Publication

Preparation and characterization of poly(urethane–urea) microcapsules containing limonene. Kinetic analysis

2017Journal article Restricted access
Simple item page
dc.contributor.authorSilva, Mónica
dc.contributor.authorMartins, Isabel P.
dc.contributor.authorBarreiro, M.F.
dc.contributor.authorDias, Madalena M.
dc.contributor.authorRodrigues, Alírio
dc.date.accessioned2017-12-14T11:35:24Z
dc.date.available2017-12-14T11:35:24Z
dc.date.issued2017
dc.description.abstractThe synthesis of poly(urethane–urea) shells (PUU) using poly(ethylene glycols) of different molecular weights and methylene-bis(4-cyclohexyliso- cyanate) was performed for the microencapsulation of limonene, using a step growth polymerization process. The obtained microcapsules were structurally characterized by dynamic light scattering, optical microscopy, scanning electron microscopy, Fourier transform infrared spectroscopy, and thermogravimetric analysis. The results showed that the core–shell microcapsules had spherical shape, a mean diameter in between 10 and 20 μm, and characteristic urethane-urea bonds. Furthermore, the molecular weight of polyol influences the entrapment efficiency, which ranged from 38 to 55%. The release data were analyzed by applying the Korsmeyer–Peppas model.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationSilva, M.; Martins, I.P.; Barreiro, M.F.; Dias, M.M.; Rodrigues, A.E. (2017). Preparation and characterization of poly(urethane–urea) microcapsules containing limonene. Kinetic analysis. International Journal of Polymer Analysis and Characterization. ISSN 1023-666X. 8:22, p. 709-724pt_PT
dc.identifier.doi10.1080/1023666X.2017.1369253pt_PT
dc.identifier.issn1023-666X
dc.identifier.urihttp://hdl.handle.net/10198/14718
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectCore–shell polymerpt_PT
dc.subjectLimonenept_PT
dc.subjectMicroencapsulationpt_PT
dc.subjectStep-growth polymerizationpt_PT
dc.subjectStructure-propertiespt_PT
dc.titlePreparation and characterization of poly(urethane–urea) microcapsules containing limonene. Kinetic analysispt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage724pt_PT
oaire.citation.issue8pt_PT
oaire.citation.startPage709pt_PT
oaire.citation.titleInternational Journal of Polymer Analysis and Characterizationpt_PT
oaire.citation.volume22pt_PT
person.familyNameBarreiro
person.givenNameFilomena
person.identifier.ciencia-id3418-47D5-5746
person.identifier.orcid0000-0002-6844-333X
person.identifier.ridL-9802-2014
person.identifier.scopus-author-id57188719717
rcaap.rightsrestrictedAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication0391987c-ba90-488b-839a-153447ce1f0f
relation.isAuthorOfPublication.latestForDiscovery0391987c-ba90-488b-839a-153447ce1f0f

Files

Original bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
Mónica - International Journal of Polymer Characterization - 2017.pdf
Size:
1.62 MB
Format:
Adobe Portable Document Format
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.75 KB
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections

CIMO - Artigos em Revistas Indexados à WoS/Scopus