Archivio Istituzionale della RicercaA wide range of hyperbranched polymers (HBP) was synthesized and investigated as additives in cationic photopolymerization of epoxy systems. The HBP were inserted into the polymeric network through a chain transfer reaction involving the phenolic hydroxyl groups. By varying the type and concentration of HBP a modification of the bulk properties of photocured films was induced. An increase of toughness properties together with a flexibilization was obtained without affecting the processability and the viscosity of the photocurable mixture. In the presence of fluorine-containing HBP or alkyl functionalized-HBP, a surface modification was also induced.
Hyperbranched polymers in cationic UV curing / Sangermano, Marco; Bongiovanni, Roberta Maria; Priola, Aldo; D., Pospiech; B., Voit. - 49:(2008), pp. 46-47. (Intervento presentato al convegno 235th ACS National Meeting, Spring 2008 tenutosi a New Orleans LA (USA) nel 6-10 April 2008).
Hyperbranched polymers in cationic UV curing
SANGERMANO, MARCO;BONGIOVANNI, Roberta Maria;PRIOLA, ALDO;
2008
Abstract
A wide range of hyperbranched polymers (HBP) was synthesized and investigated as additives in cationic photopolymerization of epoxy systems. The HBP were inserted into the polymeric network through a chain transfer reaction involving the phenolic hydroxyl groups. By varying the type and concentration of HBP a modification of the bulk properties of photocured films was induced. An increase of toughness properties together with a flexibilization was obtained without affecting the processability and the viscosity of the photocurable mixture. In the presence of fluorine-containing HBP or alkyl functionalized-HBP, a surface modification was also induced.
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https://hdl.handle.net/11583/1752847
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