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Effect of hydroxyl ended and end-capped multiarm star polymers on the curing process and mechanical characteristics of epoxy/anhydride thermosets

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10.1016/j.porgcoat.2014.04.014
 
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hdl:2117/24438

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Acebo Gorostiza, Cristina
Picardi, Annamaria
Fernández Francos, XavierMés informacióMés informacióMés informació
Flor López, Sílvia de laMés informació
Ramis Juan, XavierMés informacióMés informacióMés informació
Serra Albet, Maria ÀngelsMés informació
Document typeArticle
Defense date2014-08-01
Rights accessRestricted access - publisher's policy
Attribution-NonCommercial-NoDerivs 3.0 Spain
Except where otherwise noted, content on this work is licensed under a Creative Commons license : Attribution-NonCommercial-NoDerivs 3.0 Spain
Abstract
Multiarm star polymers have been synthesized by cationic ring-opening polymerization of epsilon-caprolactone from a hyperbranched poly(ethyleneimine) core and end-capped with acetic anhydride. These star polymers have been used as modifiers in diglycidylether of bisphenol A/methyl tetrahydrophthalic anhydride/benzyl dimethylamine formulations. The curing process is studied by dynamic scanning calorimetry and rheometry and the resulting thermosets are characterized by dynamic mechanical thermal analysis and thermogravimetry.; Internal stresses generated during curing are measured and interpreted in terms of the thermal mechanical properties of the cured materials. The influence of the modifier in the toughness improvement of the cured thermosets is determined by standardized impact tests and the microstructure of the material observed by scanning electron microscopy. (C) 2014 Elsevier B.V. All rights reserved.
CitationAcebo, C. [et al.]. Effect of hydroxyl ended and end-capped multiarm star polymers on the curing process and mechanical characteristics of epoxy/anhydride thermosets. "Progress in organic coatings", 01 Agost 2014, vol. 77, núm. 8, p. 1288-1298. 
URIhttp://hdl.handle.net/2117/24438
DOI10.1016/j.porgcoat.2014.04.014
ISSN0300-9440
Publisher versionhttp://www.sciencedirect.com/science/article/pii/S0300944014001313
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  • TERFIQ - Grup de Termodinàmica i Fisico-Química - Articles de revista [61]
  • Departament de Màquines i Motors Tèrmics - Articles de revista [420]
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