Synthesis of alkyl-functionalized hyperbranched polymers and their use as additives in cationic photopolymerization of epoxy resins

Publikation: Beitrag in FachzeitschriftForschungsartikelBeigetragenBegutachtung

Beitragende

  • Anna Di Gianni - (Autor:in)
  • Marco Sangermano - (Autor:in)
  • Giulio Malucelli - (Autor:in)
  • Brigitte Voit - , Leibniz Institute of Polymer Research Dresden (Autor:in)

Abstract

An alkyl-functionalized hyperbranched polymer, HBP(OH)-C16, was synthesized by partial modification with fatty acid of an aromatic-aliphatic OH-terminated hyperbranched polyester HBP-OH. This product was used as additive in the cationic photopolymerization of an epoxy resin. The alkyl-modified polyester takes part in the photopolymerization process thanks to the residual OH groups by means of chain-transfer reactions. An increase of the epoxy conversion is observed by increasing the amount of the HBP additive in the photocurable resin with a modification of the bulk properties of the final ultraviolet-cured films. The presence of HBP(OH)-C16 induces an increase in glass transition temperature, thermal stability, and solvent resistance. Moreover the surface properties of the films are modified achieving highly hydrophobic surfaces in the presence of even very low amounts of HBP(OH)-C16.

Details

OriginalspracheEnglisch
Seiten (von - bis)1004-1012
Seitenumfang9
FachzeitschriftMacromolecular materials and engineering
Jahrgang291
Ausgabenummer8
PublikationsstatusVeröffentlicht - 7 Aug. 2006
Peer-Review-StatusJa
Extern publiziertJa

Externe IDs

Scopus 33747800425
ORCID /0000-0002-4531-691X/work/148607726

Schlagworte

Schlagwörter

  • Cationic photopolymerization, Epoxy resin, Hyperbranched polymers, Surface properties