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结构上有序的NIPU通过无催化剂合成与基于红和长链二胺的硬段

Edyta Hebda¹, Karolina Wróbel¹, Aleksandra Cieślik¹

¹Department of Chemistry and Technology of Polymers, Cracow University of Technology, Warszawska 24, 31-155 Krakow, Poland.

Molecules (Basel, Switzerland)

|July 30, 2025

概括

这项研究使用红二碳酸盐和各种聚乙烯合成了新的线性异酸盐无聚氨 (NIPU). 聚乙烯类型显著影响这些可持续的NIPU的热和微相特性.

科学领域:

聚合物化学聚合物化学
材料科学材料科学材料科学
有机合成有机合成

背景情况:

聚氨 (PU) 是具有广泛应用的多功能聚合物.
传统的PU合成涉及危险的异酸盐,推动了对更安全替代品的研究.
无异酸盐聚氨 (NIPU) 提供了一种可持续和环保的方法.

研究的目的:

合成和描述新的线性异酸盐无聚氨 (NIPU).
研究不同聚乙烯软片段 (PEG,PPO,PEG/PPO) 和链延长剂度对NIPU特性的影响.
阐明这些NIPU中的结构-财产关系.

主要方法:

通过氨解红二碳酸盐 (EDC) 与米诺聚乙烯和1,12-米诺多德 (DADD) 合成NIPU.
化学结构分析使用里埃变换红外光谱学 (FTIR) 和质子核磁共振 (H NMR).
使用宽角X射线衍射 (WAXD),小角X射线散射 (SAXS),差分扫描热量计 (DSC) 和动态机械分析 (DMA) 的结构和热量表征.

主要成果:

FTIR和H NMR证实了NIPU的成功合成.
WAXD从DADD段中揭示了有序的结晶域,并在PEG/PEG-PPO软段中保持了结晶性.
萨克斯在硬段和弱相分离中表示了长距离的订单.
DSC和DMA表现出不同的热行为 (化,玻璃过渡),受聚类型和NIPU组成的影响.

结论:

聚乙烯软片段的类型对合成NIPU的热和微相形态产生了重大影响.
DADD链延伸器的度会影响硬段内的排序和平面间距.
这些发现有助于开发可调节的高性能NIPU,用于各种应用.

关键词:

二碳酸二氧化碳的红醇.阶段分离的阶段分离.聚氧氨基乙 (polyhydroxyurethane) 是一种多氧氨基乙.分段的非异酸盐聚氨.结构的结构结构的结构.

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