The impact of an imidazolium-based ionic liquid (IL) on the morphology as well as physical structure and molecular mobility of polyamide 11 (PA11) was investigated. A low IL content lead to the formation of the γ crystalline phase of PA11, through a fractionated crystallization process promoted by the droplet morphology obtained at the nano to microscale. The thermal and dielectric signatures of IL excess inside the droplets were evidenced. Dynamic mechanical and dielectric analyses also revealed an additional secondary β relaxation of PA11 associated with the mobility of its amide groups, as well as important modifications of the PA11 usual mobilities, explained by the complex interactions between the ionic liquid, water molecules and the polymer matrix.

中文翻译：

---

离子液体作为聚酰胺 11 的结构化剂：对多晶型和分子迁移率的影响


研究了基于咪唑的离子液体 （IL） 对聚酰胺 11 （PA11） 的形态、物理结构和分子迁移率的影响。低 IL 含量导致 PA11 的 $\gamma$ 结晶形成，通过由纳米到微米级获得的液滴形态促进的分馏结晶过程。液滴内 IL 过量的热和介电特性得到了证明。动态力学和介电分析还揭示了 PA11 与其酰胺基团的迁移率相关的额外二次 $\beta$ 弛豫，以及 PA11 通常迁移率的重要修改，这可以通过离子液体、水分子和聚合物基质之间的复杂相互作用来解释。