Ionomers exhibiting good thermal stability have been prepared by mixing three uncharged components—a poly(dimethyl)siloxane (PDMS) with randomly substituted amidine side chains, an alkylamine, and carbon disulfide. In essence, the three uncharged components produce charged materials, polyelectrolytes with amidinium dithiocarbamate ion pairs. The preparation, structures, and properties of the ionomers at the microscopic and macroscopic levels are reported as a function of PDMS chain length, degree of amidine substitution, and length of the alky group of the amine component. Whereas ionomers with hexyldithiocarbamate anions are viscous liquids at room temperature, those with octadecyldithiocarbamate groups are semi-crystalline solids, exhibiting multiple thermal transitions between 0 °C and the temperature at which they become isotropic phases. The structural natures of those transitions have been characterized from analyses of data from differential scanning calorimetry, X-ray diffraction, and rheology measurements. Among the interesting properties exhibited by the ionomers are strong adhesion to different surfaces, and high ultimate shear stress considering their relatively low amidinium contents.

中文翻译：

---

不带电荷的路易斯碱产生带有脒烷基二硫代氨基甲酸酯侧链的聚二甲基硅氧烷离聚物

具有良好热稳定性的离聚物是通过混合三种不带电荷的组分——具有随机取代脒侧链的聚（二甲基）硅氧烷 (PDMS)、烷基胺和二硫化碳制备的。本质上，三种不带电的成分产生带电材料，即带有脒二硫代氨基甲酸离子对的聚电解质. 离聚物在微观和宏观水平上的制备、结构和性质被报告为 PDMS 链长、脒取代度和胺组分烷基长度的函数。带有己基二硫代氨基甲酸酯阴离子的离聚物在室温下是粘性液体，带有十八烷基二硫代氨基甲酸酯基团的离聚物是半结晶固体，在 0 °C 和它们变成各向同性相的温度之间表现出多次热转变。这些转变的结构性质已通过差示扫描量热法、X 射线衍射和流变学测量的数据分析得到表征。离聚物表现出的有趣特性包括对不同表面的强附着力，