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

摘要： 滑动轮凝胶由于其聚合物网络是由8字形的交联结构将聚轮烷拓扑联锁而成，因而具有比传统聚合物凝胶更优越的溶胀性能、延展性以及机械强度，近年来已成为聚合物凝胶领域研究的热点。本文介绍了滑动轮凝胶的基本概念与拓扑交联方式，简述了其优越的性能和广泛的应用价值，回顾了滑动交联理论的提出及实现过程。重点综述了国内外各种滑动轮凝胶的制备方法，以及溶剂、交联密度和环糊精与PEG的包结复合率等因素对其滑轮效应的结构与性能的影响。指出目前滑动轮凝胶所用的聚轮烷骨架种类较少，应用研究有待加强。

关键词: 滑动轮凝胶, 8字形交联结构, 滑轮效应, 聚轮烷