High‐Modulus and High‐Damping Ionic Polymers Enabled by Cohesive Entanglement
Abstract
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.
Article Details
Authors (9)
Ziyang Liu
Xiaowei Wang
Minzhi Duan
School of Chemistry and Chemical Engineering Nanjing University Nanjing China
Ming Wu
Qingning Li
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
Jiaofeng Xiong
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
Xiaoliang Wang
Department of Chemistry
Weizheng Li
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
Feng Yan
Materials Science and Engineering Program, School for Engineering of Matter, Transport and Energy