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

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• 作者：Fu-Chun Liu ; En-Hou Han ; Wei Ke ; Nan Tang ; Junbiao Wan ; Guilai Yin ; Jingwei Deng ; Kangwen Zhao
• 关键词：Polymer ; Clay ; Exfoliation ; Intercalation
• 刊名：Journal of Materials Science & Technology
• 出版年：November, 2013
• 年：2013
• 卷：29
• 期：11
• 页码：1040-1046
• 全文大小：1471 K

文摘

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.