MONOALKYLITACONATES VINYLPYRROLIDONE COPOLYMERS .2. REACTIVITY RATIOS AND VISCOMETRIC BEHAVIOR IN DILUTE-SOLUTIONS

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dc.contributor.authorRADIC, D
dc.contributor.authorOPAZO, A
dc.contributor.authorVILDOSOLA, G
dc.contributor.authorGARGALLO, L
dc.date.accessioned2025-01-23T19:21:57Z
dc.date.available2025-01-23T19:21:57Z
dc.date.issued1993
dc.description.abstractCopolymerization of mono-n-octyl, mono-n-decyl and mono-n-dodecyl itaconate with vinylpyrrolidone (MOI-VP, MDI-VP and MDoI-VP) was carried out using AIBN as initiator. The monomer reactivity ratios were determined by the Fineman-Ross and Kelen-Tudos methods. Values of r1 and r2 were found to be less than unity for MOI-VP, MDI-VP and MDoI-VP, corresponding to random copolymers with some tendency to alternance. Copolymers of various compositions were studied in solution, and Mark-Houwink-Kuhn-Sakurada relationships were established in ethanol for MOI-VP and MDI-VP copolymers, and in 1-propanol for MDoI-VP. The rigidity factors sigma and the characteristic ratio C(infinity) were obtained from K(theta) values determined by using the Stockmayer-Fixman relation. In all the copolymers the introduction of vinylpyrrolidone units produces flexibility of the polymer chain relative to the poly(monoitaconate) homopolymers, and the solution properties of these copolymers can be described by assuming a random coil model instead of a rigid rod or wormlike model as in poly(monoitaconates).
dc.fuente.origenWOS
dc.identifier.issn0959-8103
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/98914
dc.identifier.wosidWOS:A1993KP05900008
dc.issue.numero2
dc.language.isoen
dc.pagina.final182
dc.pagina.inicio175
dc.revistaPolymer international
dc.rightsacceso restringido
dc.subjectCOPOLYMERS
dc.subjectMONOITACONATES
dc.subjectVINYLPYRROLIDONE
dc.subjectREACTIVITY RATIOS
dc.subjectCHAIN RIGIDITY
dc.subjectCONFORMATIONAL ANALYSIS
dc.titleMONOALKYLITACONATES VINYLPYRROLIDONE COPOLYMERS .2. REACTIVITY RATIOS AND VISCOMETRIC BEHAVIOR IN DILUTE-SOLUTIONS
dc.typeartículo
dc.volumen31
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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