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The effect of cross-linking on the molecular dynamics of the segmental and β Johari–Goldstein processes in polyvinylpyrrolidone-based copolymers

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The effect of cross-linking on the molecular dynamics of the segmental and β Johari–Goldstein processes in polyvinylpyrrolidone-based copolymers

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dc.contributor.author Redondo Foj, María Belén es_ES
dc.contributor.author Sanchis Sánchez, María Jesús es_ES
dc.contributor.author Ortiz Serna, Mª Pilar es_ES
dc.contributor.author Carsí Rosique, Marta es_ES
dc.contributor.author García, José Miguel es_ES
dc.contributor.author García, Félix Clemente es_ES
dc.date.accessioned 2016-05-25T09:39:15Z
dc.date.available 2016-05-25T09:39:15Z
dc.date.issued 2015-07
dc.identifier.issn 1744-683X
dc.identifier.uri http://hdl.handle.net/10251/64685
dc.description.abstract The effect of the cross-link density on the molecular dynamics of copolymers composed of vinylpyrrolidone (VP) and butyl acrylate (BA) was studied using differential scanning calorimetry (DSC) and dielectric relaxation spectroscopy (DRS). A single glass transition was detected by DSC measurements. The dielectric spectra exhibit conductive processes and three dipolar relaxations labeled as a, b and g in the decreasing order of temperatures. The cross-linker content affects both a and b processes, but the fastest g process is relatively unaffected. An increase of cross-linking produces a typical effect on the a process dynamics: (i) the glass transition temperature is increased, (ii) the dispersion is broadened, (iii) its strength is decreased and (iv) the relaxation times are increased. However, the b process, which possesses typical features of a pure Johari Goldstein relaxation, unexpectedly loses the intermolecular character for the highest cross-linker content. es_ES
dc.description.sponsorship B.R.F., M.J.S., P.O.S. and M.C. gratefully acknowledge CICYT for grant MAT2012-33483. F.G. and J.M.G. acknowledge the Spanish Ministerio de Economia y Competitividad-FEDER (MAT2014-54137-R) and the Junta de Castilla y Leon (BU232U13). en_EN
dc.language Inglés es_ES
dc.publisher Royal Society of Chemistry es_ES
dc.relation.ispartof Soft Matter es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject.classification MAQUINAS Y MOTORES TERMICOS es_ES
dc.subject.classification TERMODINAMICA APLICADA (UPV) es_ES
dc.title The effect of cross-linking on the molecular dynamics of the segmental and β Johari–Goldstein processes in polyvinylpyrrolidone-based copolymers es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.1039/c5sm00714c
dc.relation.projectID info:eu-repo/grantAgreement/MINECO//MAT2012-33483/ES/NANOHILOS SEMICONDUCTORES Y DE POLIMEROS CON APLICACIONES EN ENERGIA/ es_ES
dc.relation.projectID info:eu-repo/grantAgreement/MINECO//MAT2014-54137-R/ES/POLIMEROS ORGANICOS E HIBRIDOS. FILMS, FIBRAS Y RECUBRIMIENTOS COMO SENSORES DE SUSTANCIAS DE INTERES EN SEGURIDAD CIVIL, BIOMEDICO, ALIMENTARIO, AMBIENTAL E INDUSTRIAL/ es_ES
dc.relation.projectID info:eu-repo/grantAgreement/Junta de Castilla y León//BU232U13/ES/POLÍMEROS FUNCIONALES ORGÁNICOS E HÍBRIDOS COMO MATERIALES AVANZADOS PARA APLICACIONES EN EL ÁMBITO DE LA PROTECCIÓN, LA INDUSTRIA, LA BIOMEDICINA Y EL MEDIO AMBIENTE./ es_ES
dc.rights.accessRights Abierto es_ES
dc.contributor.affiliation Universitat Politècnica de València. Departamento de Termodinámica Aplicada - Departament de Termodinàmica Aplicada es_ES
dc.contributor.affiliation Universitat Politècnica de València. Instituto de Tecnología Eléctrica - Institut de Tecnologia Elèctrica es_ES
dc.description.bibliographicCitation Redondo Foj, MB.; Sanchis Sánchez, MJ.; Ortiz Serna, MP.; Carsí Rosique, M.; García, JM.; García, FC. (2015). The effect of cross-linking on the molecular dynamics of the segmental and β Johari–Goldstein processes in polyvinylpyrrolidone-based copolymers. Soft Matter. 11:7171-7180. https://doi.org/10.1039/c5sm00714c es_ES
dc.description.accrualMethod S es_ES
dc.relation.publisherversion http://dx.doi.org/10.1039/C5SM00714C es_ES
dc.description.upvformatpinicio 7171 es_ES
dc.description.upvformatpfin 7180 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 11 es_ES
dc.relation.senia 301578 es_ES
dc.identifier.eissn 1744-6848
dc.contributor.funder Junta de Castilla y León es_ES
dc.contributor.funder Ministerio de Economía y Competitividad es_ES
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