dc.creatorBonk, Fabio A.
dc.creatorCaldarelli, Stefano
dc.creatorTrang, Phan
dc.creatorBertin, Denis
dc.creatorAzevêdo, Eduardo Ribeiro de
dc.creatorMantovani, Gerson Luíz
dc.creatorBonagamba, Tito Jose
dc.creatorPlivelic, Tomás S.
dc.creatorTorriani, Iris L.
dc.date.accessioned2016-04-19T20:04:22Z
dc.date.accessioned2018-07-04T16:54:37Z
dc.date.available2016-04-19T20:04:22Z
dc.date.available2018-07-04T16:54:37Z
dc.date.created2016-04-19T20:04:22Z
dc.date.issued2010-01
dc.identifierJournal of Polymer Science B,Hoboken : John Wiley and Sons,v. 48, n. 1, p. 55-64, Jan 2010
dc.identifier0887-6266
dc.identifierhttp://www.producao.usp.br/handle/BDPI/50073
dc.identifier10.1002/polb.21843
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1642036
dc.description.abstractThe microphase structure of a series of polystyrene-b-polyethylene oxide-b-polystyrene (SEOS) triblock copolymers with different compositions and molecular weights has been studied by solid-state NMR, DSC, wide and small angle X-ray scattering (WAXS and SAXS). WAXS and DSC measurements were used to detect the presence of crystalline domains of polyethylene-oxide (PEO) blocks at room temperature as a function of the copolymer chemical composition. Furthermore, DSC experiments allowed the determination of the melting temperatures of the crystalline part of the PEO blocks. SAXS measurements, performed above and below the melting temperature of the PEO blocks, revealed the formation of periodic structures, but the absence or the weakness of high order reflections peaks did not allow a clear assessment of the morphological structure of the copolymers. This information was inferred by combining the results obtained by SAXS and 1H NMR spin diffusion experiments, which also provided an estimation of the size of the dispersed phases of the nanostructured copolymers. © 2009 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 48: 55–64, 2010
dc.languageeng
dc.publisherJohn Wiley and Sons
dc.publisherHoboken
dc.relationJournal of Polymer Science B
dc.rightsCopyright John Wiley and Sons
dc.rightsrestrictedAccess
dc.subjectABA triblock-copolymers
dc.subjectBlock copolymers
dc.subjectNMR
dc.subjectSAXS
dc.titleInvestigation by combined solid-state NMR and SAXS methods of the morphology and domain size in polystyrene-b-polyethylene oxide-b-polystyrene triblock copolymers
dc.typeArtículos de revistas


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