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Effects of Annealing on the Migration Behavior of PA6/Clay Nanocomposites

✍ Scribed by Yong Tang; Menachem Lewin; Eli M. Pearce

Publisher
John Wiley and Sons
Year
2006
Tongue
English
Weight
260 KB
Volume
27
Category
Article
ISSN
1022-1336

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✦ Synopsis

Abstract

Summary: Migration of clay to the surface of nylon 6‐organically modified clay is investigated. The effect of annealing time and temperature on the migration of the clay is reported. Attenuated total reflectance FT‐IR spectrometry, X‐ray diffraction, and high‐resolution electronic microscopy are used in this study. The results obtained indicate that migration occurs predominantly in the samples with exfoliated structure. Migration increases in the temperature range of 250–275 °C. A further increase in temperature decreases the extent of migration. Migration increases with time at 250 °C. Annealing in the presence of oxygen decreases migration. It is suggested that the extent of migration depends on the concentration of the surfactant and the polymer in the exfoliated particles.

High‐resolution electronic microscopy image of an exfoliated nylon‐6/clay sample in which migration has occurred.

magnified imageHigh‐resolution electronic microscopy image of an exfoliated nylon‐6/clay sample in which migration has occurred.

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