Blends of chitosan and poly(sodium-4-styrene sulphonate). Compatibilization by lysine and glutamic acid

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dc.contributor.authorCastro, Cristian
dc.contributor.authorGargallo, Ligia
dc.contributor.authorRadic', Deodato
dc.contributor.authorMondragon, Inaki
dc.contributor.authorKortaberria, Galder
dc.date.accessioned2024-01-10T13:11:28Z
dc.date.available2024-01-10T13:11:28Z
dc.date.issued2010
dc.description.abstractPolymer blends of chitosan (CS) and poly(sodium-4-styrene sulphonate) (PSS) have been compatibilized using lysine (LYS) and glutamic acid (GLU). Blends of CS/PSS containing LYS and GLU have been studied by thermal analysis. The values of T-g for CS/PSS-LYS blends could not be detected by thermal analysis but one single T-g was found for CS/PSS-GLU blends. Thermogravimetric analysis (TGA) showed that blends decompose at lower temperatures than that of pure components. Displacements in the main absorption bands in the FT-IR spectra were not clear to discern compatibility. Atomic force microscopy (AFM) indicated that addition of lysine or glutamic acid clearly modified the compatibility of the blends. The globular domains existing in the unmodified blend changed to more or less linear and smooth crystalline domains with parallel periodicity. Dielectric analysis revealed that compatibilizer addition changed the secondary relaxation process of PSS to higher temperatures as a result of the modification on interactions. No variation on the segmental dynamics of both polymers was observed as their main relaxations remained unchanged after the addition of lysine or glutamic acid. (C) 2010 Elsevier Ltd. All rights reserved.
dc.description.funderCONICYT
dc.fechaingreso.objetodigital21-03-2024
dc.format.extent7 páginas
dc.fuente.origenWOS
dc.identifier.doi10.1016/j.carbpol.2010.05.055
dc.identifier.eissn1879-1344
dc.identifier.issn0144-8617
dc.identifier.urihttps://doi.org/10.1016/j.carbpol.2010.05.055
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/78050
dc.identifier.wosidWOS:000281524900039
dc.information.autorucQuímica;Castro C ;S/I;142057
dc.information.autorucQuímica;Gargallo L;S/I;98194
dc.information.autorucQuímica;Radic' D ;S/I;49367
dc.issue.numero3
dc.language.isoen
dc.nota.accesocontenido parcial
dc.pagina.final801
dc.pagina.inicio795
dc.publisherELSEVIER SCI LTD
dc.revistaCARBOHYDRATE POLYMERS
dc.rightsacceso restringido
dc.subjectChitosan
dc.subjectPoly(sodium-4-styrene sulphonate)
dc.subjectBlends
dc.subjectPhase separation
dc.subjectCompatibilizers
dc.subjectLysine
dc.subjectglutamic acid
dc.subjectFUNCTIONALIZED POLYMERS
dc.subjectPOLYSTYRENE
dc.subjectSPECTROSCOPY
dc.subjectCOPOLYMERS
dc.subjectDYNAMICS
dc.subjectWATER
dc.titleBlends of chitosan and poly(sodium-4-styrene sulphonate). Compatibilization by lysine and glutamic acid
dc.typeartículo
dc.volumen82
sipa.codpersvinculados142057
sipa.codpersvinculados98194
sipa.codpersvinculados49367
sipa.indexWOS
sipa.indexScopus
sipa.trazabilidadCarga SIPA;09-01-2024
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