Abstract—

A new method for activating the synthesis of high molecular weight polymer PIM-1 obtained in dimethyl sulfoxide is proposed and studied. A simple and technologically effective process of precipitation polyheterocyclization occurs at 60–80°C for 2–5 h under constant exposure to ultrasound at a frequency of 37 kHz. This method allows one to synthesize the PIM-1 polymer with a molecular weight of up to 121 × 10³ and a relatively low polydispersity index of 3.8. In addition to powder materials, microporous nanofibrous materials are obtained by electrospinning from polymer solutions. According to the Brunauer–Emmett–Teller method, the specific surface area of PIM-1 reaches 862 m²/g for powders and 362 m²/g for nanofibers.

中文翻译：

---

PIM-1的超声活化合成和二甲基亚砜中沉淀多杂环化获得的聚合物的性能

摘要-

提出并研究了活化在二甲基亚砜中合成高分子量聚合物PIM-1的新方法。一个简单且技术上有效的沉淀多杂环化过程是在60-80°C下持续2-5h，同时不断暴露于37kHz的超声下。这种方法可以合成分子量高达121×10 ³且相对较低的多分散指数3.8的PIM-1聚合物。除粉末材料外，微孔纳米纤维材料还可以通过静电纺丝从聚合物溶液中获得。根据布鲁诺-埃梅特-特勒法，PIM-1到达862米的比表面积² / g的粉末和362米²为纳米纤维/克。