Advance in Polymer Modifications by Supercritical CO₂

Zhang Aifeng, Zhang Ziyong^*
(Department of Chemistry, Institute of Life Science and Technology, Jinan University, Guangzhou 510632)

Abstract Advance in polymer modifications by supercritical CO₂ was reviewed. The methods of polymer modifications by using supercritical CO₂ medium include the blend by extruding or impregnating, composite with small molecules, cross-linking, grafting and surface refinement and so on. Various different ways were used to prepare polymer materials with special properties. Supercritical CO₂, as a green medium, should play an important role in the polymer modifications.
Key words Supercritical CO₂, Polymer modifications, Blend, Composite

超临界CO₂在聚合物改性中的应用

张爱丰   张子勇^*
（暨南大学生命科学技术学院化学系 广州 510632）

摘要 综述了超临界CO₂在聚合物改性中的研究进展。用超临界CO₂作为介质进行聚合物改性的途径包括：挤出共混、聚合共混、与小分子复合、接枝、交联以及表面改性等。采用不同的改性方法，可制备具有各种不同性能的高分子材料。超临界CO₂作为一种绿色反应介质，将在聚合物改性方面发挥巨大的作用。
关键词 超临界CO₂ 聚合物改性 共混 复合

张爱丰 女，24岁，硕士生，现从事超临界CO₂的聚合物改性的研究。 *联系人
广东省科委基金(编号021198)
2002-07-21收稿，2002-09-06修回