High-Modulus and High-Damping Ionic Polymers Enabled by Cohesive Entanglement

Ziyang Liu ¹Xiaowei Wang ¹Minzhi Duan ²Ming Wu ²Qingning Li ¹Jiaofeng Xiong ¹Xiaoliang Wang ²Weizheng Li ¹Feng Yan³

扫码查看

作者信息

1. Jiangsu Engineering Laboratory of Novel Functional Polymeric Materials, Jiangsu Key Laboratory of Advanced Negative Carbon Technologies, Suzhou Key Laboratory of Soft Material and New Energy, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, China
2. School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, China
3. Jiangsu Engineering Laboratory of Novel Functional Polymeric Materials, Jiangsu Key Laboratory of Advanced Negative Carbon Technologies, Suzhou Key Laboratory of Soft Material and New Energy, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, China||State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, China
折叠

Abstract

High-modulus polymers typically derive their properties from high crosslinking density and strong intermolecular interactions. In contrast, high-damping polymers primarily dissipate energy via the sliding and friction of mobile molecular segments. This fundamental contradiction creates an inherent trade-off, rendering the simultaneous achievement of high modulus and high damping a significant challenge. Herein, we report rigid-damping amphoteric ionic polymers (AIPs) developed through a cohesive entanglement strategy governed by side-chain ionic interactions. Synthesized via acid–base neutralization, these AIPs simultaneously achieve a high Young’s modulus of 0.9 GPa and a damping coefficient (loss factor, tan δ) of up to 1.5. This breakthrough proposes a strategy to balance the modulus-damping trade-off and highlights the material’s potential for advanced impact-resistant applications, such as transparent coatings for electronic devices and vibration-damping systems.

Key words

high damping/high modulus/impact resistant/ionic liquid/ionic polymer/mechanical properties

引用本文复制引用

出版年

2026

Advanced Materials

ISSN：0935-9648

段落导航