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Epoxy‐amine based thermoresponsive networks designed by Diels–Alder reactions
Author(s) -
Marref Mohamed,
Mignard Nathalie,
Jegat Corinne,
Taha Mohamed,
Belbachir Mohamed,
Meghabar Rachid
Publication year - 2013
Publication title -
polymer international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.592
H-Index - 105
eISSN - 1097-0126
pISSN - 0959-8103
DOI - 10.1002/pi.4287
Subject(s) - furan , maleimide , epoxy , molar mass , polymer chemistry , amine gas treating , diels–alder reaction , diene , gel permeation chromatography , stoichiometry , materials science , adduct , organic chemistry , chemistry , polymer , catalysis , natural rubber
The synthesis of Diels–Alder (DA) adducts from stoichiometric quantities of a new multi‐maleimide dienophile and epoxy‐amine type oligomers bearing furan group units on their side chains was investigated. Precursors of the DA reaction were first synthesized and their functionalities were determined by 1 H NMR and gel permeation chromatography/SEC analysis. TGA and DSC were used to characterize their thermal properties. In this study, the effect of the multi‐furan diene functionality on the network density was analyzed. Rheological analysis was used to highlight the thermal reversibility of the DA reaction and to calculate the average molar weight between crosslinks. The results showed that network density could be regulated or modulated by varying the functionality of the diene. Copyright © 2012 Society of Chemical Industry