Compression elastic modulus of neutral and protonated poly(N-vinylimidazole) hydrogels

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Show simple item record Valencia, Joaquín Baselga Llidó, Juan Esteban Pacios, María Isabel Fernández de Piérola, Inés 2017-11-16T12:49:23Z 2017-11-16T12:49:23Z 2003-10
dc.identifier.bibliographicCitation Valencia, J., Baselga, J., E. Pacios, I. & F. Piérola, I. (2003). Compression elastic modulus of neutral and protonated poly(N-vinylimidazole) hydrogels. Macromolecular Symposia. Functional Networks and Gels, 200 (1), pp. 235-242.
dc.identifier.issn 1521-3900
dc.description.abstract The compression modulus of poly(N-vinylimidazole) (PVI) hydrogels synthesized by cross-linking polymerization in aqueous solution, was measured at room temperature in several related systems: i) just after polymerization, ii) swollen at equilibrium in deionized water, iii) swollen in HCl (aq) (pH=2.5), iv) swollen in HCl (pH=2.5) and 1 M NaCl (aq) solution and v) swollen in H2SO4 (pH=2.5) (aq) solution. Samples of the first and second groups are neutral whereas hydrogels of the other three groups are ionic because of protonation of basic imidazole groups. The experimental results were fitted with the Erman-Monnerie theory, applied to compression measurements for the first time, to determine the phantom modulus, [fₚₕ*], and the parameter κG which measures the constraining role of entanglements on the fluctuations of chains between knots.
dc.description.sponsorship Financial support from DCil (Spain) under grants BQU2000-0251 and MAT2000-0391-P4-02 is gratefully acknowledged.
dc.format.extent 8
dc.format.mimetype application/pdf
dc.language.iso eng
dc.publisher WILEY-VCH Verlag GmbH
dc.rights © Wiley, 2003
dc.subject.other Compression
dc.subject.other Elastic modulus
dc.subject.other Hydrogels
dc.subject.other Ionic gels
dc.subject.other Swelling
dc.title Compression elastic modulus of neutral and protonated poly(N-vinylimidazole) hydrogels
dc.type article
dc.subject.eciencia Materiales
dc.subject.eciencia Química
dc.rights.accessRights openAccess
dc.relation.projectID Gobierno de España. BQU2000-0251
dc.relation.projectID Comunidad de Madrid. MAT2000-0391-P4-02
dc.type.version acceptedVersion
dc.identifier.publicationfirstpage 235
dc.identifier.publicationissue 1
dc.identifier.publicationlastpage 242
dc.identifier.publicationtitle Macromolecular Symposia. Special Issue: Functional Networks and Gels
dc.identifier.publicationvolume 200
dc.identifier.uxxi AR/0000010948
dc.affiliation.dpto UC3M. Departamento de Ciencia e Ingeniería de Materiales e Ingeniería Química
dc.affiliation.grupoinv UC3M. Grupo de Investigación: Polímeros y Composites
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