Polar Influence of the Organic Modifiers on the Structure of Montmorillonite in Epoxy Nanocomposites

doi:10.1016/j.jmst.2013.08.014

Abstract

Abstract:

The epoxy nanocomposites with similar amines (CH₃(CH₂)₁₇NH₂ and CH₃(CH₂)₁₇N(CH₃)₃Cl) treated montmorillonite clays have been investigated by wide-angle X-ray scattering, transmission electron microscopy (TEM), differential scanning calorimetry (DSC) and thermal gravimetric analysis (TGA). Different nanocomposite structures, intercalation and exfoliation were formed by the reaction of octadecyltrimethylammonium chloride-exchanged and octadecylamine-exchanged clays with epoxy resin and phenalkamine as the curing agent, respectively. Results showed that the exfoliated nanocomposite can be obtained when octadecylamine with the lower polarity was used as a modifier. However, the intercalated nanocomposite can be obtained when octadecyltrimethylammonium chloride with higher polarity was used as a modifier.

Key words: Polymer, Clay, Exfoliation, Intercalation

Fu-Chun Liu, En-Hou Han, Wei Ke, Nan Tang, Junbiao Wan, Guilai Yin,Jingwei Deng,Kangwen Zhao. Polar Influence of the Organic Modifiers on the Structure of Montmorillonite in Epoxy Nanocomposites[J]. J. Mater. Sci. Technol., DOI: 10.1016/j.jmst.2013.08.014.

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