Tomuta, A.; Fernandez-Francos, X.; Ferrando, F.; Serra, À.; Ramis, X. Polymer-Plastics technology and engineering Vol. 53, num. 7, p. 645-654 DOI: 10.1080/03602559.2013.869599 Data de publicació: 2014-05-11 Article en revista
Multiarm star polymers with hyperbranched aromatic or aromatic-aliphatic cores and poly(epsilon-caprolactone) arms have been used as toughness modifiers in epoxy-anhydride formulations catalyzed by benzyldimethylamine. The curing process has been studied by dynamic scanning calorimetry, demonstrating little influence of the mobility of the reactive species and the hydroxyl content on the kinetics of this process. The obtained materials were characterized by thermal and mechanical tests and the microstructure by electron microscopy. Homogeneous thermosets have been obtained with a remarkable increase in impact strength without compromising glass transition temperature, thermal stability or hardness.
Vila, N.; Sanchez-Soto, M.; Illescas, S.; Gordillo, A. Polymer-Plastics technology and engineering Vol. 48, num. 4, p. 470-477 DOI: 10.1080/03602550902725472 Data de publicació: 2009 Article en revista