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Thermal stability and water uptake of high performance epoxy layered silicate nanocomposites

journal contribution
posted on 01.01.2004, 00:00 authored by O Becker, Russell VarleyRussell Varley, G P Simon
Intercalated and ordered exfoliated layered silicate nanocomposites based on three different epoxy resins of different structures and functionalities were synthesized using an octadecyl ammonium modified smectite clay. Water uptake properties of series of each nanocomposite system with different organoclay concentrations were determined by gravimetric measurements over a period of time. The diffusion coefficients were determined and the effect of the absorbed water on the thermal relaxations investigated. The equilibrium water uptake of all nanocomposites was reduced compared to the neat epoxy system but the rate of water diffusion remained unaffected. Further, the thermal stability of the different nanocomposites was determined using thermogravimetric analysis. The nanocomposites showed slightly reduced thermal stability, as indicated by a slight decrease in onset of degradation, whilst the final char concentration increased for greater organoclay concentrations.

History

Journal

European polymer journal

Volume

40

Issue

1

Pagination

187 - 195

Publisher

Elsevier

Location

Amsterdam, The Netherlands

ISSN

0014-3057

Language

eng

Publication classification

C1.1 Refereed article in a scholarly journal

Copyright notice

2003, Elsevier Ltd.