Dynamic mechanical and dielectric relaxations in poly(di-n-chloroalkylitaconates)

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dc.contributor.authorSanchis, MJ
dc.contributor.authorDiaz Calleja, R
dc.contributor.authorPelissou, O
dc.contributor.authorGargallo, L
dc.contributor.authorRadic, D
dc.date.accessioned2024-01-10T12:05:00Z
dc.date.available2024-01-10T12:05:00Z
dc.date.issued2004
dc.description.abstractDielectric and viscoelastic relaxation measurements have been carried out on poly(2-chloroethyl diitaconate) (PDCEI) and poly(3-chloropropyl diitaconate) (PDCPI) between 123 K and temperatures about 293 K above the glass transition temperatures.
dc.description.abstractThe two polymers exhibit three peaks, a gamma-relaxation in the range from 133 to 193 K (at 1 Hz), a broad beta-process, in the range from 193 to 293 K and a third peak observed in mechanical measurements at 323 K (PDCEI) and 293 K (PDCPI) probably corresponding to the alpha dynamic glass transition phenomena. In dielectric measurements, conductive contributions overlap the alpha-relaxation precluding the observation of peaks at temperatures above room temperature. The apparent activation energies for the gamma-relaxation according to the mechanical and dielectric measurements are close to the values derived from the empirical force field molecular mechanics calculations. A comparison is made between the relaxational data of PDCEI and PDCPI by one hand and poly(di-n-propyl itaconate) (PDPI) and poly(di-n-butyl itaconate) (PDBI) by other. This comparison allows us to conclude the relevant role played by the chlorine atoms not only in the gamma relaxations but also in the beta relaxations of PDCEI and PDCPI. (C) 2004 Elsevier Ltd. All fights reserved.
dc.fechaingreso.objetodigital08-04-2024
dc.format.extent11 páginas
dc.fuente.origenWOS
dc.identifier.doi10.1016/j.polymer.2004.01.017
dc.identifier.eissn1873-2291
dc.identifier.issn0032-3861
dc.identifier.urihttps://doi.org/10.1016/j.polymer.2004.01.017
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/75926
dc.identifier.wosidWOS:000189214700014
dc.information.autorucQuímica;Gargallo L;S/I;98194
dc.information.autorucQuímica;Radic D;S/I;49367
dc.issue.numero6
dc.language.isoen
dc.nota.accesoContenido parcial
dc.pagina.final1855
dc.pagina.inicio1845
dc.publisherELSEVIER SCI LTD
dc.revistaPOLYMER
dc.rightsacceso restringido
dc.subjectpoly(itaconates)
dc.subjectdielectric and mechanical relaxations
dc.subjectmolecular mechanics
dc.subjectLOW-TEMPERATURE RELAXATIONS
dc.subjectMOLECULAR-MECHANICS
dc.subjectPOLY(VINYL ALCOHOL)
dc.subjectPOSSIBLE ORIGINS
dc.subjectBEHAVIOR
dc.subjectMETHACRYLATE)
dc.subjectCHAINS
dc.subjectITACONATES)
dc.subjectPOLYMERS
dc.subjectPAA
dc.titleDynamic mechanical and dielectric relaxations in poly(di-n-chloroalkylitaconates)
dc.typeartículo
dc.volumen45
sipa.codpersvinculados98194
sipa.codpersvinculados49367
sipa.indexWOS
sipa.indexScopus
sipa.trazabilidadCarga SIPA;09-01-2024
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