Department of Chemical and Biomolecular Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong.
J Colloid Interface Sci. 2011 Jun 15;358(2):423-9. doi: 10.1016/j.jcis.2011.03.009. Epub 2011 Mar 8.
High-impact polystyrene (PS) nanocomposites filled with individually dispersed halloysite nanotubes (HNTs) were prepared by emulsion polymerization of styrene in the presence of HNTs with sodium dodecyl sulfate (SDS) as the emulsifier. The SDS is a good dispersing agent for HNTs in aqueous solution. The emulsion polymerization resulted in the formation of polystyrene nanospheres separating individual HNTs. Transmission electron microscopy revealed that the HNTs were uniformly dispersed in the PS matrix. Differential scanning calorimetry, Fourier-transform infrared spectroscopy and thermogravimetry were used to characterize the PS/HNT nanocomposites. The impact strength of the PS/HNTs nanocomposites was 300% higher than that of the neat PS. This paper presents a simple yet feasible method for the preparation of high-impact PS/halloysite nanocomposites.
高冲击聚苯乙烯（PS）纳米复合材料，其中含有分散良好的海泡石纳米管（HNTs），通过在十二烷基硫酸钠（SDS）作为乳化剂的存在下用苯乙烯进行乳液聚合而制备。SDS 是 HNTs 在水溶液中的良好分散剂。乳液聚合导致形成分离单个 HNTs 的聚苯乙烯纳米球。透射电子显微镜显示 HNTs 在 PS 基质中均匀分散。差示扫描量热法、傅里叶变换红外光谱和热重分析用于表征 PS/HNT 纳米复合材料。PS/HNTs 纳米复合材料的冲击强度比纯 PS 高 300%。本文提出了一种简单可行的制备高冲击 PS/海泡石纳米复合材料的方法。
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