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Anionic copolymerization of diglycidyl ether of bisphenol A with Meldrum's acid derivatives initiated by 4‐( N,N ‐dimethylamino) pyridine
Author(s) -
González Lidia,
Ramis Xavier,
Salla Josep Maria,
Mantecón Ana,
Serra Angels
Publication year - 2008
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.29211
Subject(s) - diglycidyl ether , copolymer , polymer chemistry , pyridine , differential scanning calorimetry , bisphenol a , curing (chemistry) , ether , bisphenol , materials science , epoxide , thermosetting polymer , chemistry , epoxy , organic chemistry , polymer , physics , catalysis , thermodynamics
The anionic copolymerization of diglycidyl ether of bisphenol A with 2,2,5,5‐tetramethyl‐4,6‐dioxo‐1,3‐dioxane or 6,6‐dimethyl‐(4,8‐dioxaspiro[2.5]octane‐5,7‐dione) with 4‐( N,N ‐dimethylamino) pyridine as an initiator to form thermosets was studied with differential scanning calorimetry, and the kinetics were evaluated with isoconversional procedures. The evolution during the curing process of the epoxide, lactone, and linear ester bands was evaluated with Fourier transform infrared spectroscopy in the attenuated total reflection mode to clarify the reactions taking place. The shrinkage during curing, thermomechanical properties, and thermal degradability of the materials obtained by copolymerization with the different derivatives of Meldrum's acid were evaluated and related to the chemical structure of the final network. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2009