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Enhanced chemical reworkability of DGEBA thermosets cured with rare earth triflates using aromatic hyperbranched polyesters (HBP) and multiarm star HBP-b-poly(e-caprolactone) as modifiers

Author
Tomuta, A.; Fernandez-Francos, X.; Ferrando, F.; Ramis, X.; Serra, M. À.
Type of activity
Journal article
Journal
Polymers for advanced technologies
Date of publication
2013-11
Volume
24
Number
11
First page
962
Last page
970
DOI
10.1002/pat.3171
Abstract
A hyperbranched aromatic polyester (HBPOH) has been synthesized, and poly(e-caprolactone) arms have been grown on some of its end hydroxyl groups (HBPCL). These modifiers have been used in cationic diglycidyl ether of bisphenol A formulations cured with ytterbium triflate as cationic initiator. The effect of HBPOH and HBPCL on the curing kinetics has been studied using differential scanning calorimetry (DSC). The obtained materials have been characterized by dynamomechanical analysis, DSC, therm...
Keywords
DGEBA, Hyperbranched polymer, Impact strength, Reworkability, Thermoset
Group of research
POLTEPO - Thermosetting Epoxy Polymers

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