Self-assembly of physically crosslinked micelles of poly(2-acrylamido-2-methyl-1-propane sulphonic acid-co-isodecyl methacrylate)-copper(II) complexes

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Mostrar el registro sencillo del ítem San Miguel Arnanz, Verónica Catalina, Fernando Peinado, Carmen 2017-05-03T11:36:56Z 2017-05-03T11:36:56Z 2008-02-20
dc.identifier.bibliographicCitation European Polymer Journal, 2008, 44 (5), pp. 1368-1377.
dc.identifier.issn 0014-3057
dc.description.abstract Metal complexes were prepared by the reaction of Cu(II) chloride with sodium salt of random copolymers of 2-acrylamido-2-methylpropane sulphonic acid, AMPS, and isodecyl methacrylate, i-DMA. Composition was varied in the feed to obtain copolymers and their corresponding metal chelates with different content of i-DMA hydrophobic monomer. The copolymers and their metal chelates were characterized by Fourier transformed IR spectroscopy (FTIR) and scanning electron microscopy (SEM) as well as energy-dispersive X-ray spectroscopy (EDS). The X-ray diffraction studies revealed that the polymers and their chelates were amorphous. Also, the stabilities of the copolymers and their metal chelates were investigated using thermal methods such as TGA and DSC analysis. Lower thermal stability was found for the polymer–metal complexes compared to that of the copolymers. Fluorescence spectroscopy was used to further confirm the copolymers and their Cu(II) metal complexes self-aggregate in water. Critical micellar concentrations become lower by metal complexation. A synergistic effect in self-assembly behaviour in water solutions of Cu(II) polycomplexes is attributed to the interplay between hydrophilic–hydrophobic interactions and electrostatic forces with Cu²⁺ ions. Physical crosslinking of polymeric micelles obtained by metal complexation led to more stable micelles. Sodium salt copolymers led to secondary aggregation while ionic crosslinking provided lonely micelles distributed through the substrate as seen by SEM. These results point to a mechanism in which cation-assisted-polymer-modified water structure plays a central role in the phase separation behaviour.
dc.description.sponsorship The authors would like to thank the Plan Nacional I+D+I (Ministerio de Educación y Ciencia) for financial support (MAT2006-05979) as well as the Comunidad Autónoma de Madrid for the funding through I+D Program (S0505/MAT-0227).
dc.format.extent 10
dc.format.mimetype application/pdf
dc.language.iso eng
dc.publisher Elsevier
dc.rights © 2008 Elsevier
dc.rights Atribución-NoComercial-SinDerivadas 3.0 España
dc.subject.other Polymer-metal chelates
dc.subject.other Water soluble polymers
dc.subject.other Thermal properties
dc.subject.other Self-assembly
dc.subject.other Crosslinked micelles
dc.title Self-assembly of physically crosslinked micelles of poly(2-acrylamido-2-methyl-1-propane sulphonic acid-co-isodecyl methacrylate)-copper(II) complexes
dc.type article
dc.subject.eciencia Materiales
dc.subject.eciencia Química
dc.rights.accessRights openAccess
dc.relation.projectID Gobierno de España. MAT2006-05979
dc.relation.projectID Comunidad de Madrid. S0505/MAT-0227
dc.type.version acceptedVersion
dc.identifier.publicationfirstpage 1368
dc.identifier.publicationissue 5
dc.identifier.publicationlastpage 1377
dc.identifier.publicationtitle European Polymer Journal
dc.identifier.publicationvolume 44
dc.identifier.uxxi AR/0000019786
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