Dynamic Polyphosphazene Networks with Modulating Shape Memory and Self-Healing Capacity by Double Coordination Interactions,Macromolecular Materials and Engineering

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Dynamic Polyphosphazene Networks with Modulating Shape Memory and Self-Healing Capacity by Double Coordination Interactions
Macromolecular Materials and Engineering ( IF 4.2 ) Pub Date : 2021-08-05 , DOI: 10.1002/mame.202100349
Zhaolin Wu _{1,

2} , Yuanxi Zhao _{1,

2} , Liqun Zhang _{1,

3} , Xiufen Wang _{1,

2}

Affiliation

A modern class of self-healing polyphosphazene elastomers has been synthesized using coordination bonds for the first time. Two categories of carboxyl-modified polyphosphazene have been synthesized, and 16 cross-linked polymers have been fabricated by tuning the concentration of different metal ions, which also allows modifying the properties of the elastomer by adjusting the interactions. This design enables the polymer network to form a hierarchical and dynamic structure without introducing complex ligands. The polyphosphazene networks can be toughened and enhanced by the dynamic coordination structure. Due to the distinct design, the synthesized elastomers show unprecedented properties in halogen-free polyphosphazenes, including high tensile stress (1.82 MPa), high malleability (≈1100%), shape memory, self-healing, and thermal processing capacity.

中文翻译：

通过双协调相互作用调节形状记忆和自愈能力的动态聚磷腈网络

首次使用配位键合成了一类现代自修复聚磷腈弹性体。已经合成了两类羧基改性聚磷腈，并通过调节不同金属离子的浓度制备了 16 种交联聚合物，这也允许通过调节相互作用来改变弹性体的性能。这种设计使聚合物网络能够在不引入复杂配体的情况下形成分层和动态结构。聚磷腈网络可以通过动态配位结构增韧和增强。由于独特的设计，合成的弹性体在无卤聚磷腈中显示出前所未有的性能，包括高拉伸应力 (1.82 MPa)、高延展性 (≈1100%)、形状记忆、自修复、

更新日期：2021-08-05

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