The mixture of linear polyethylene glycol with molecular weight of 20,000 (l‐PEG_20K) and cyclic polyethylene glycol with molecular weight of 1,000 (c‐PEG_1K) was ultrasonicated in acetonitrile. After evaporating the solvent, the residue was analyzed by DSC to show a remarkable decrease of crystallization temperature. Such a large crystallization suppression was not observed when linear polyethylene glycol with molecular weight of 1,000 (l‐PEG_1K) was added instead of c‐PEG_1K. Further, the mixture of cyclic polyethylene glycols (c‐PEG_6K and c‐PEG_1K) did not exhibit a significant crystallization suppression. These experimental results indicated that formation of polypseudorotaxane through ultrasonication‐assisted ring penetration played an important role in the crystallization suppression. Ionic conductivities of the polypseudorotaxane‐based polymer electrolytes prepared from polyethylene oxide with molecular weight of 600,000 (PEO_600K) and c‐PEG_1K showed conductivity enhancement especially at low Li salt concentration.

中文翻译：

---

线性和环状聚环氧乙烷组成的聚伪轮烷的制备及其在固体高分子电解质中的应用

将分子量为20,000（l -PEG _20K）的线性聚乙二醇和分子量为1,000（c- PEG _1K）的环状聚乙二醇的混合物在乙腈中超声处理。蒸发溶剂后，通过DSC分析残余物以显示出明显的结晶温度降低。当添加分子量为1,000的线性聚乙二醇（l- PEG _1K）代替c- PEG _1K时，未观察到如此大的结晶抑制作用。此外，环状聚乙二醇（c- PEG _6K和c- PEG_1K）没有表现出明显的结晶抑制作用。这些实验结果表明，通过超声辅助环渗透形成的聚伪轮烷在结晶抑制中起着重要作用。由分子量为600,000（PEO _600K）的聚环氧乙烷和c- PEG _1K制备的基于聚伪轮烷的聚合物电解质的离子电导率显示出电导率增强，尤其是在低锂盐浓度下。