New pegylated hyperbranched polyester as chemical modifier of epoxy resins in UV cationic photocuring

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Título:	New pegylated hyperbranched polyester as chemical modifier of epoxy resins in UV cationic photocuring
Autor/a:	Foix, David; Fernández Francos, Xavier; Ramis Juan, Xavier; Serra Albet, Àngels; Sangermano, Marco
Otros autores:	Universitat Politècnica de Catalunya. Departament de Màquines i Motors Tèrmics; Universitat Politècnica de Catalunya. TERFIQ - Grup de Termodinàmica i Fisico-Química
Abstract:	A new hyperbranched polymer (HBPpeg) has been obtained via pegylation of an aromatic hyperbranched polyester. This polymer has been used as modifier of a commercially available cycloaliphatic epoxy resin in its cationic UV photocuring, using arylsulfonium salts as photoinitiator. The addition of the HBP slows down the curing as well as reduces the overall conversion achieved at room temperature, due to its interaction with the photoinitiator, but fully cured materials were achieved for formulations containing up to 10 phr of the HBP. The amphiphilic structure of the HBPpeg allows it to phase-separate in the epoxy matrix, which was confirmed by means of FESEM. The thermomechanical characteristics and the thermal stability have been also studied.
Abstract:	Peer Reviewed
Materia(s):	-Àrees temàtiques de la UPC::Física::Termodinàmica::Altes temperatures -Hyperbranched polymer -Epoxy resins -Resines epoxídiques -Polimers hiperramificats
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Tipo de documento:	Artículo - Versión publicada Artículo
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Foix, David; Ramis Juan, Xavier; Serra Albet, Àngels; Sangermano, Marco

Foix, David; Ramis Juan, Xavier; Serra Albet, Àngels; Sangermano, Marco

Flores Guillen, Marjorie; Foix, David; Serra Albet, Àngels; Ramis Juan, Xavier; Sangermano, Marco

Flores, Marjori; Fernández Francos, Xavier; Jiménez Piqué, Emilio; Foix, David; Serra Albet, Àngels; Ramis Juan, Xavier

Gonzalez, Gustavo; Fernández Francos, Xavier; Serra Albet, Àngels; Sangermano, Marco; Ramis Juan, Xavier

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