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Thermo‐stimulated creep study of the α retardation mode in epoxy‐glass beads composites
Author(s) -
Dufresne A.,
Lacabanne C.
Publication year - 1993
Publication title -
polymer composites
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.577
H-Index - 82
eISSN - 1548-0569
pISSN - 0272-8397
DOI - 10.1002/pc.750140309
Subject(s) - interphase , materials science , composite material , glass transition , epoxy , creep , elastomer , coating , polymer , genetics , biology
Thermo‐stimulated creep (TSCr) analysis was performed to characterize the anelastic properties around the glass transition of the model system: expoxy resin‐glass beads. Different interphase regions have been deliberately formed by means of a silane coupling agent and an elastomeric adduct coating. In all samples the primary retardation mode, labeled α, has been found around 140°C. this retardation mode has been associated with the anelastic manifestation of the mode in filled epoxy has been used to estimate the interphase thickness. By applying “fractional stresses” the complex α peak has been experimentally resolved and local changes of morphology in the interphase zone are evidenced in terms of mobility and kinetic of motion. This last technique has also allowed us to compare the length of the mobile units liberated at the glass transition as a function of the filler‐matrix interphase.