In this research, nanocomposite latex based on polystyrene-co-2-ethylhexyl acrylate with layered silicate was synthesized by emulsion polymerization procedure. For increasing compatibility between the organophilic montmorillonite (Cloisite 30B) and polymer matrix, the Cloisite 30B was reacted with vinyltricholorosilane as a coupling agent to replace the edge hydroxyl groups of the layered silicate with a vinyl moiety. The chemical grafting the polymer onto surface of Cloisite 30B was clearly confirmed by FT-IR spectroscopy. Wide-angle X-ray diffraction (WAXD) and scanning electron microscopy (SEM) analyses were performed in order to investigate the extent of dispersion of the filler in the matrix. The glass transition temperatures of the materials were determined by differential scanning calorimetry (DSC). Also, the thermal properties of the polymer nanocomposites were characterized using (TGA) analysis. The obtained results showed that the nanocomposites with the 0.3 and 0.5 wt% nanoclay had the exfoliated structures, whereas the nanocomposite with the 1.0 wt% nanoclay had both exfoliated and intercalated structures. The formation of these structures in nanocomposite with 1.0 wt% nanoclay was confirmed by WXRD, SEM and TEM.

本研究通过乳液聚合法合成了基于聚苯乙烯-丙烯酸-2-乙基己酯和层状硅酸盐的纳米复合胶乳。为了增加亲有机蒙脱土（Cloisite 30B）和聚合物基质之间的相容性，Cloisite 30B与乙烯基三氯硅烷作为偶联剂反应，以乙烯基部分取代层状硅酸盐的边缘羟基。通过FT-IR光谱清楚地证实了将聚合物化学接枝到Cloisite 30B的表面上。为了研究填料在基体中的分散程度，进行了广角X射线衍射（WAXD）和扫描电子显微镜（SEM）分析。通过差示扫描量热法（DSC）确定材料的玻璃化转变温度。也，聚合物纳米复合材料的热性能使用（TGA）分析进行了表征。所得结果表明，具有0.3和0.5重量％的纳米粘土的纳米复合材料具有剥离的结构，而具有1.0重量％的纳米粘土的纳米复合材料具有剥离的和插入的结构。通过WXRD，SEM和TEM证实了在具有1.0wt％纳米粘土的纳米复合材料中这些结构的形成。