Vitrimers: Using Dynamic Associative Bonds to Control Viscoelasticity, Assembly, and Functionality in Polymer Networks

编号 020035704

推送时间 20220822

研究领域 林产化工 

年份 2022 

类型 期刊 

语种 英语

标题 Vitrimers: Using Dynamic Associative Bonds to Control Viscoelasticity, Assembly, and Functionality in Polymer Networks

来源期刊 ACS Macro Letters

期 第357期

发表时间 20220321

关键词 CROSS-LINKING;  LITHIUM-ION;  MOLECULAR-DYNAMICS;  STRESS-RELAXATION;  BLOCK-COPOLYMERS;  ELECTROLYTES;  TRANSPORT;  GRAPHOEPITAXY;  MORPHOLOGY;  ALIGNMENT; 

摘要 Vitrimers have been investigated in the past decade for their promise as recyclable, reprocessable, and self-healing materials. In this Viewpoint, we focus on some of the key open questions that remain regarding how the molecular-scale chemistry impacts macroscopic physical chemistry. The ability to design temperature-dependent complex viscoelastic spectra with independent control of viscosity and modulus based on knowledge of the dynamic bond and polymer chemistry is first discussed. Next, the role of dynamic covalent chemistry on self-assembly is highlighted in the context of crystallization and nanophase separation. Finally, the ability of dynamic bond exchange to manipulate molecular transport and viscoelasticity is discussed in the context of various applications. Future directions leveraging dynamic covalent chemistry to provide insights regarding fundamental polymer physics as well as imparting functionality into polymers are discussed in all three of these highlighted areas.

服务人员 尚玮姣

服务院士 宋湛谦

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