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Multifunctional epoxy resins: Synthesis and characterization
Author(s) -
Mustaţă Fanică,
Bicu Ioan
Publication year - 2000
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 - 10.1002/1097-4628(20000912)77:11<2430::aid-app11>3.0.co;2-p
Subject(s) - epoxy , rheology , activation energy , polymer chemistry , polymerization , materials science , viscosity , gel point , chemical engineering , polymer science , composite material , polymer , chemistry , organic chemistry , engineering
The tetrafunctional epoxy resins were prepared starting from diaminodiphenylmethane, diaminodiphenylether, and diaminobibenzyl. The obtained resins were characterized by IR and 1 H‐NMR spectroscopy, rheological and thermal techniques. The polymerization reaction was investigated by viscosimetry. The flow activation energy and the polymerization activation energy were evaluated from the rheological data and from the critical parameters (critical time and critical viscosity at gel point). The viscosity measurements and gel time determination showed slight differences between the synthesized resins. © 2000 John Wiley & Sons, Inc. J Appl Polym Sci 77: 2430–2436, 2000