关键词: 滑动轮凝胶, 8字形交联结构, 滑轮效应, 聚轮烷

Abstract: Slide-ring gels are a new type of polymer gels，in which polymer networks are formed by topologically interlocking of polyrotaxane by figure-of-eight cross-links. Because these cross-links can pass along the polymer chains freely to equalize the tension of the threading polymer chains like pulleys，slide-ring gels reveal higher swellability，higher stretchability，and better mechanical strength than traditional chemical or physical gels. Hence，slide-ring gels have attracted considerable attention and become a very active research area. This review introduces the concept of slide-ring gel，and its topologically cross-linking method，superior performance and extensive application value. Proposition of a sliding-ring model and its achieving process by real molecules is also reviewed. Preparation methods，structure and physical properties of the slide-ring gels，as well as three main parameters that govern the pulley effect，moving phase，cross-linking density，and complexation degree between ring and main polymer chain，are discussed. However，the types of polyrotaxanes used to prepare the slide-ring gels are limited，and the corresponding application research is rarely reported.

Key words: slide-ring gels, figure-of-eight cross-links, pulley effect, polyrotaxane