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Reactive compatibilization of epoxy/polyorganosiloxane blends
Author(s) -
Prolongo S.G.,
Cabanelas J.C.,
Baselga J.
Publication year - 2003
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.200350824
Subject(s) - compatibilization , siloxane , materials science , thermosetting polymer , epoxy , curing (chemistry) , composite material , coalescence (physics) , indentation hardness , polymer blend , polymer chemistry , copolymer , polymer , microstructure , physics , astrobiology
Abstract A new thermoset material based on DGEBA with polyaminosiloxane curing agents is presented. The system shows reaction‐induced compatibilization which prevents coalescence of polysiloxane and DGEBA rich domains, leading to gradient structured morphologies. The influence of curing temperature and/or chemical nature of the siloxane on the morphology and surface microhardness were examined. When siloxane is pre‐reacted with epoxypropylphenylether (EPPE), a more homogeneous material is obtained. Microhardness profiles on the material are strongly influenced by the extension of the compositional gradients.