中文摘要：

利用超临界状态下CO2的快速膨胀（RESS）来分散碳纳米管，为可放大化且无挥发性有机化合物的新方法。将碳纳米管在超临界CO2悬浮液中经由微细喷嘴快速膨胀使其均匀分散。电子显微镜（SEM）表征证实RESS可有效地实现碳纳米管的分散。同时，为了解决再团聚难题，提出利用小分子包覆法和将碳纳米管嵌入高分子基体法来防止其再团聚，均起到良好的效果。

英文摘要：

We report a scalable and volatile organic compound-free process for the production of well-dispersed carbon nanotubes （CNTs） in a polymer by the rapid expansion of a supercritical suspension （RESS）, in which CNTs had been suspended in super- critical carbon dioxide, and CO_2 and CNTs released from the suspension were rapidly vented through a nozzle. Reagglomeration of the CNTs after RESS can be prevented by premixing them with dimethyl isophthalate or poly（ methyl methacrylate）, which can be dissolved in supercritical carbon dioxide, or by embedding the nozzle in molten poly（methyl methacrylate）. Keywords： Carbon nanotube; Dispersion; Supercritical fluid; Rapid expansion