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Influence of network chain orientation on the mechanical property of epoxy resin filled with silica particles
Author(s) -
Harada Miyuki,
Morimoto Mitsuhiko,
Ochi Mitsukazu
Publication year - 2002
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.11454
Subject(s) - epoxy , materials science , composite material , ultimate tensile strength , moiety , stress (linguistics) , deformation (meteorology) , fourier transform infrared spectroscopy , chemical engineering , chemistry , organic chemistry , linguistics , engineering , philosophy
When tensile stress was applied to epoxy resin filled with silica particles, we expected that the stress concentration would occur in the epoxy matrix near the interface between the matrix and the silica particles. We investigated the plastic deformation of the network chains near the interface, which was quantitatively evaluated using a polarized microscope FTIR technique. A biphenol‐type epoxy resin, which has a mesogenic group in the backbone moiety, was used as the matrix resin. As a result, reorientation of the network chains along the direction of the tensile stress near the interface with the silica particles was observed. Especially when the silica/matrix interface has good bonding properties, the reorientation of the network chains was observed at a larger area around the silica particles. © 2002 Wiley Periodicals, Inc. J Appl Polym Sci 87: 787–794, 2003