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dc.contributor.authorMorell, Mireia
dc.contributor.authorLederer, Albena
dc.contributor.authorRamis Juan, Xavier
dc.contributor.authorVoit, Brigitte
dc.contributor.authorSerra Albet, Àngels
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Màquines i Motors Tèrmics
dc.identifier.citationMorell, M. [et al.]. Multiarm star poly(glycidol)-block-poly(e-caprolactone) of different arm lengths and their use as modifiers of diglycidylether of bisphenol a thermosets. "Journal of polymer science. Part A, polymer chemistry", 01 Gener 2011, vol. 49, núm. 11, p. 2395-2406.
dc.description.abstractWell-defined multiarm star copolymers, hyperbranched poly(glycidol)-b-poly(e-caprolactone), with an average of 100–110 arms per molecule and a molecular weight of arms of 3000 g/mol (PGOH-b-PCL30) and 1000 g/mol (PGOH-b-PCL10) were synthesized by cationic ring-opening polymerization of ecaprolactone from a poly(glycidol) core and used to modify diglycidylether of bisphenol A formulations. The curing process, studied by dynamic scanning calorimetry, was only slightly retarded when PGOH-b-PCLx were added to the formulation. By rheometry, the effect of this new topology and the arm length on the complex viscosity (g*) and gelation of the reactive mixture was analyzed in detail. The addition of these new reactive modifiers decreases the global shrinkage and increases the conversion at gelation. In addition, the modified thermosets have an improved reworkability. The homogeneity of pure DGEBA and modified thermosets was proved by dynamic thermomechanical analysis and electronic microscopy (FESEM). Addition of star-like structures led to a more toughened fracture of the thermoset in comparison to pure DGEBA.
dc.format.extent12 p.
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Spain
dc.subjectÀrees temàtiques de la UPC::Enginyeria química::Química física
dc.subject.lcshEpoxy resins
dc.subject.lcshAddition polymerization
dc.titleMultiarm star poly(glycidol)-block-poly(e-caprolactone) of different arm lengths and their use as modifiers of diglycidylether of bisphenol a thermosets
dc.subject.lemacResines epoxídiques
dc.contributor.groupUniversitat Politècnica de Catalunya. TERFIQ - Grup de Termodinàmica i Fisico-Química
dc.rights.accessRestricted access - publisher's policy
dc.description.versionPostprint (published version)
upcommons.citation.authorMorell, M.; Lederer, A.; Ramis, X.; Voit, B.; Serra, A.
upcommons.citation.publicationNameJournal of polymer science. Part A, polymer chemistry

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