采用一锅法乳液聚合制备了聚苯乙烯/蒙脱土(PS/MMT)纳米复合材料.一锅法即在无机蒙脱土(Na-MMT)有机化处理后,直接将乳化剂和苯乙烯单体等加入有机蒙脱土(O-MMT)悬浮液进行乳液聚合,克服了传统方法中有机蒙脱土在乳液聚合体系中不易分散的难题.XRD谱图表明,该方法成功地实现了聚苯乙烯对蒙脱土的插层,获得了良好的插层效果(蒙脱土d001面片层间距＞4 nm); FT-IR表明,PS大分子链已插层进入蒙脱土片层间;DSC显示,蒙脱土的加入使聚苯乙烯的玻璃化温度Tg由原来的99.7 ℃提高到107.1 ℃;TGA表明,插层复合提高了聚苯乙烯的热稳定性.此外,由XRD谱图还初步提出了一锅法乳液聚合的插层机理.
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