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Morphology of Different Epoxy‐Amine Systems Modified with a Thermoplastic: Influence of Temperature, Thermoplastic Concentration and Molecular Structure of Epoxy Systems
Author(s) -
Ramírez Carmen,
Rico Maite,
López Joaquín,
Montero Belén,
Ladra Marcelino
Publication year - 2008
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.200850716
Subject(s) - epoxy , thermoplastic , materials science , diamine , morphology (biology) , polymer , amine gas treating , composite material , polystyrene , polymerization , polymer chemistry , chemical engineering , chemistry , organic chemistry , genetics , engineering , biology
The morphologies generated by polymerization induced phase separaron (PIPS) in different epoxy‐amine systems modified with a thermoplastic, polystyrene (PS), were studied by SEM. The amino groups of the epoxy‐amine systems were provided by a monoamine and a diamine in different proportions, so that the resulting polymer would vary from a linear polymer (epoxy‐MA) to a highly crosslinked polymer (epoxy‐DA). The effects of reaction temperature, initial modifier concentration and degree of crosslinking of epoxy‐amine system on the morphology were discussed and trends for the size, distribution and concentration of dispersed particles were deduced. Different types of morphologies were obtained depending on the initial PS content. Typical morphologies of compositions close to critical point were observed for the 9 and 12 wt. % of PS in all the studied systems.