Journal
POLYMER
Volume 53, Issue 15, Pages 3084-3088Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.polymer.2012.05.046
Keywords
Hyperbranched polymers; Epoxy resin; UV-curing
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Funding
- MINECO (Ministerio de Economia y Competitividad) [MAT2011-27039-C03-01]
- Comissionat per a Universitats i Recerca del DIUE de la Generalitat de Catalunya [2009-SGR-1512]
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Epoxy-functionalized HOP was synthesized and used as toughening additive in epoxy based UV-curable formulations. The addition of the HBP-epox induced an increase of epoxy group conversion, probably through both an activated monomer mechanism, involving the residual hydroxyl groups, and a copolymerization reaction, involving the epoxy functionalities present on the surface of the HBP. Phase separation was reached during UV-Curing, which assured to maintain the good thermomechanical properties of the cured epoxy matrix improving the impact resistance. (C) 2012 Elsevier Ltd. All rights reserved.
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