DIELECTRIC RELAXATIONS IN POLY(THIOCARBONATES)

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dc.contributor.authorCALLEJA, RD
dc.contributor.authorGARGALLO, L
dc.contributor.authorRADIC, D
dc.date.accessioned2024-01-10T12:04:55Z
dc.date.available2024-01-10T12:04:55Z
dc.date.issued1994
dc.description.abstractThe dielectric absorptions observed on six poly (thiocarbonates) (PTC) containing different substituents in the interphenylic carbon atom are subjected to a study. The a relaxation process associated with the glass transition temperature, which appears at the highest temperature studied, is overlapped with a strong conductive component. Between 80 and 100-degrees-C dielectric activity (beta) is observed, which is related to structural relaxation phenomena. Polymers with double substitution on the interphenylic carbon atom show a gamma relaxation with an activation energy of ca. 11 kcal mol-1 while those where the carbon atom is linked to a cyclohexyl group show higher activation energies and their respective characteristics. A cryogenic absorption around -120-degrees-C, for at least three polymers with an activation energy of about 5 kcal mol-1, is detected. (C) 1994 John Wiley & Sons, Inc.
dc.fechaingreso.objetodigital2024-04-12
dc.format.extent8 páginas
dc.fuente.origenWOS
dc.identifier.doi10.1002/polb.1994.090320904
dc.identifier.issn0887-6266
dc.identifier.urihttps://doi.org/10.1002/polb.1994.090320904
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/75910
dc.identifier.wosidWOS:A1994NT35100004
dc.information.autorucQuímica;Gargallo L;S/I;98194
dc.information.autorucQuímica;Radic D;S/I;49367
dc.issue.numero9
dc.language.isoen
dc.nota.accesocontenido parcial
dc.pagina.final1624
dc.pagina.inicio1617
dc.publisherJOHN WILEY & SONS INC
dc.revistaJOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS
dc.rightsacceso restringido
dc.subjectPOLY(THIOCARBONATES)
dc.subjectDIELECTRIC RELAXATION
dc.subjectCONDUCTIVITY
dc.subjectPHYSICAL AGING
dc.subjectMOLECULAR MOTIONS
dc.subjectGLASS-TRANSITION TEMPERATURES
dc.subjectBISPHENOL-A POLYCARBONATE
dc.subjectCHAIN FLEXIBILITY
dc.subjectDIPOLE-MOMENT
dc.subjectCONFORMATIONAL FEATURES
dc.subjectDIPHENYL CARBONATE
dc.subjectAMORPHOUS POLYMERS
dc.subjectBETA-RELAXATIONS
dc.subjectSIDE GROUPS
dc.subjectLOSS CURVE
dc.titleDIELECTRIC RELAXATIONS IN POLY(THIOCARBONATES)
dc.typeartículo
dc.volumen32
sipa.codpersvinculados98194
sipa.codpersvinculados49367
sipa.indexWOS
sipa.indexScopus
sipa.trazabilidadCarga SIPA;09-01-2024
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