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.
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.Pubblicazioni consigliate
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https://hdl.handle.net/11583/1752847
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