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dc.contributor.author
Leonardi, Agustina Belen
dc.contributor.author
Zucchi, Ileana Alicia
dc.contributor.author
Williams, Roberto Juan Jose
dc.date.available
2016-05-27T14:04:02Z
dc.date.issued
2014-11-07
dc.identifier.citation
Leonardi, Agustina Belen; Zucchi, Ileana Alicia; Williams, Roberto Juan Jose; Generation of large and locally aligned wormlike micelles in block copolymer/epoxy blends; Elsevier; European Polymer Journal; 65; 7-11-2014; 202-208
dc.identifier.issn
0014-3057
dc.identifier.uri
http://hdl.handle.net/11336/5865
dc.description.abstract
A dispersion of wormlike micelles, empirically found in some block copolymer (BCP) / epoxy blends, has been reported to produce a significant toughening of epoxy networks. In this study, a rationale procedure to generate and trap large and locally aligned wormlike micelles in an epoxy matrix is reported. A BCP / epoxy / hardener blend was selected that was homogeneous at the polymerization temperature but became nanostructured in the course of polymerization leading to hexagonally packed cylinders (HPC) domains. When a similar BCP with a molar mass about three times larger than the first one and with the same ratio between blocks was used, the nanostructuration into HPC domains was frustrated by diffusional limitations of the large cylindrical micelles generated. A morphology consisting of a dispersion of large and locally aligned wormlike micelles was trapped in the cross-linked epoxy. The selected BCP was polystyrene (PS)-b-poly(ethylene oxide) (PEO), with molar masses M = 43 kDa or 136 kDa and a mass fraction of PEO close to 25 wt %. The network precursors were based on diglycidylether of bisphenol A (DGEBA) and 4,4´-methylenebis(2,6-diethylaniline) (MDEA). Low- and high-molar-mass BCP generated, respectively, HPC domains and wormlike micelles, as supported by TEM images and SAXS spectra.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.subject
Block Copolymer
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Hexagonally Packed Cylinders
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Polymerization-Induced Self-Assembly
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Ps-B-Peo/Epoxy
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Wormlike Micelles
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Físico-Química, Ciencia de los Polímeros, Electroquímica
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Ciencias Químicas
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CIENCIAS NATURALES Y EXACTAS
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Nano-materiales
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Nanotecnología
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INGENIERÍAS Y TECNOLOGÍAS
dc.title
Generation of large and locally aligned wormlike micelles in block copolymer/epoxy blends
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2016-05-03T14:54:54Z
dc.journal.volume
65
dc.journal.pagination
202-208
dc.journal.pais
Países Bajos
dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Leonardi, Agustina Belen. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Mar del Plata. Instituto de Investigación en Ciencia y Tecnología de Materiales (i); Argentina. Universidad Nacional de Mar del Plata. Facultad de Ingeniería; Argentina
dc.description.fil
Fil: Zucchi, Ileana Alicia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Mar del Plata. Instituto de Investigación en Ciencia y Tecnología de Materiales (i); Argentina. Universidad Nacional de Mar del Plata. Facultad de Ingeniería; Argentina
dc.description.fil
Fil: Williams, Roberto Juan Jose. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Mar del Plata. Instituto de Investigación En Ciencia y Tecnología de Materiales (i); Argentina. Universidad Nacional de Mar del Plata. Facultad de Ingeniería; Argentina
dc.journal.title
European Polymer Journal
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0014305714003760
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.eurpolymj.2014.11.001
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://doi.org/10.1016/j.eurpolymj.2014.11.001
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