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Phase separation induced by a chain polymerization: Polysulfone-modified epoxy/anhydride systems

1998; Wiley; Volume: 36; Issue: 8 Linguagem: Inglês

10.1002/(sici)1099-0488(199806)36

1099-0488

Patricia A. Oyanguren, Carmen C. Riccardi, R. J. J. Williams, Iñaki Mondragòn,

Polymer crystallization and properties

Journal of Polymer Science Part B: Polymer PhysicsVolume 36, Issue 8 p. 1349-1359 Article Phase separation induced by a chain polymerization: Polysulfone-modified epoxy/anhydride systems P. A. Oyanguren, P. A. Oyanguren Institute of Materials Science and Technology (INTEMA), University of Mar del Plata and National Research Council (CONICET), J.B. Justo 4302, 7600 Mar del Plata, ArgentinaSearch for more papers by this authorC. C. Riccardi, C. C. Riccardi Institute of Materials Science and Technology (INTEMA), University of Mar del Plata and National Research Council (CONICET), J.B. Justo 4302, 7600 Mar del Plata, ArgentinaSearch for more papers by this authorR. J. J. Williams, Corresponding Author R. J. J. Williams Institute of Materials Science and Technology (INTEMA), University of Mar del Plata and National Research Council (CONICET), J.B. Justo 4302, 7600 Mar del Plata, ArgentinaInstitute of Materials Science and Technology (INTEMA), University of Mar del Plata and National Research Council (CONICET), J.B. Justo 4302, 7600 Mar del Plata, ArgentinaSearch for more papers by this authorI. Mondragon, I. Mondragon Departamento de Ingeniería Química y del Medio Ambiente, Escuela Universitaria de Ingeniería Técnica Industrial, Universidad del País Vasco/Euskal Herriko Unibertsitatea, Avda Felipe IV, 1B, 20011 San Sebastián/Donostia, EspañaSearch for more papers by this author P. A. Oyanguren, P. A. Oyanguren Institute of Materials Science and Technology (INTEMA), University of Mar del Plata and National Research Council (CONICET), J.B. Justo 4302, 7600 Mar del Plata, ArgentinaSearch for more papers by this authorC. C. Riccardi, C. C. Riccardi Institute of Materials Science and Technology (INTEMA), University of Mar del Plata and National Research Council (CONICET), J.B. Justo 4302, 7600 Mar del Plata, ArgentinaSearch for more papers by this authorR. J. J. Williams, Corresponding Author R. J. J. Williams Institute of Materials Science and Technology (INTEMA), University of Mar del Plata and National Research Council (CONICET), J.B. Justo 4302, 7600 Mar del Plata, ArgentinaInstitute of Materials Science and Technology (INTEMA), University of Mar del Plata and National Research Council (CONICET), J.B. Justo 4302, 7600 Mar del Plata, ArgentinaSearch for more papers by this authorI. Mondragon, I. Mondragon Departamento de Ingeniería Química y del Medio Ambiente, Escuela Universitaria de Ingeniería Técnica Industrial, Universidad del País Vasco/Euskal Herriko Unibertsitatea, Avda Felipe IV, 1B, 20011 San Sebastián/Donostia, EspañaSearch for more papers by this author First published: 07 December 1998 https://doi.org/10.1002/(SICI)1099-0488(199806)36:8 3.0.CO;2-MCitations: 52AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Abstract The reaction-induced phase separation in a blend of a commercial polysulfone (PSu) with diepoxide-cyclic anhydride monomers, was studied. The diepoxide was based on diglycidylether of bisphenol A (DGEBA) and the hardener was methyl tetrahydrophthalic anhydride (MTHPA), used in stoichiometric proportion. Benzyldimethylamine (BDMA) was used as initiator. PSu had no influence on the polymerization kinetics, the gel conversion, and the overall heat of reaction per epoxy equivalent. A kinetic model including initiation, propagation, and termination steps was used to estimate the distribution of linear and branched species in the first stages of the chain-wise copolymerization. This distribution, together with the PSu distribution, were taken into account in a thermodynamic model of the blend. The interaction parameter was fitted from experimental determinations of conversions at the start of phase separation, obtained under different conditions. The thermodynamic model was used to explain the complex morphologies developed in materials containing different PSu concentrations as well as their dynamic mechanical response. The shift in glass transition temperatures was explained by the fractionation of different species during the phase separation process. Phase inversion produced a significant decrease of the elastic modulus in the glassy state and a thermoplastic-like behavior of the material in the rubbery region. © 1998 John Wiley & Sons, Inc. J Polym Sci B: Polym Phys 36: 1349–1359, 1998 References and Notes 1 A. N. Mauri, N. Galego, C. C. Riccardi, and R. J. J. Williams, Macromolecules, 30, 1616 (1997). 2 J. L. Hedrick, I. Yilgor, G. L. Wilkes, and J. E. McGrath, Polym. Bull., 13, 201 (1985). 3 J. A. Cecere and J. E. McGrath, Polym. Prepr. (Am. Chem. Soc. Div. Polym. Chem.), 27, 299 (1986). 4 H. Jabloner, B. J. Swetlin, and S. G. Chu, U.S. Pat. 4,656,207 (1987). 5 S. G. Chu, B. J. Swetlin, and H. Jabloner, U.S. Pat. 4,656,208 (1987). 6 Z. Fu and Y. Sun, Polym. Prepr. (Am. Chem. Soc. Div. Polym. Chem.), 29, 177 (1988). 7 J. L. Hedrick, I. Yilgor, M. Jurek, J. C. Hedrick, G. L. Wilkes, and J. E. 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