Mohamed M. Eissa • Moshera Samy • A. M. Ramadan • Amal Amin1
Abstract
Amino-terminated hyperbranched poly(ester-amine) (HP) was prepared
and used as a toughening agent for epoxy resin in presence of Montmorillonite
organoclay (OMMT) as a reinforcing filler. Several parameters which affect the
physico-mechanical properties of epoxy/clay nanocomposites were studied including
HP content, clay concentration, and intercalation/exfoliation and degree of
dispersion of OMMT clay within the epoxy matrix. The results showed a significant
improvement in toughness, physico-mechanical properties and enhancement in
thermal stability of epoxy/clay nanocomposites upon using HP (20 wt%) as a
toughening agent at low OMMT clay loading (1 wt%). These promising results
could open the way for epoxy resins to be used in more high-impact resistance
applications.
د.مشيره سامى عبد العزيز يوسف | Dr.Moshera Samy Abdelaziz Youssef | 3992