We provide a canonical introduction to dual-junction-functionality associative polymer networks, which combine high and low functionality (f) dynamic cross-link junctions to impart load-bearing, dissipation, and self-repairing ability to the network. This unique type of network configuration offers an alternative to traditional dual-junction networks consisting of covalent and reversible cross-links. The high-f junctions can provide load-bearing abilities similar to a covalent cross-link while retaining the ability to self-repair and concurrently confer stimuli-responsive properties arising from the high-f junction species. We demonstrate the mechanical properties of this design motif using metal-coordinating polymer hydrogel networks, which are dynamically cross-linked by different ratios of metal nanoparticle (high-f) and metal ion (low-f) cross-link junctions. We also demonstrate the spontaneous self-assembly of nanoparticle-cross-linked polymers into anisotropic sheets, which may be generalizable for designing dual-junction-functionality associative networks with low volume fraction percolated high-f networks.

中文翻译：

---

具有离子和纳米粒子金属配位交联结的双结功能缔合聚合物网络的动力学

我们对双结功能缔合聚合物网络进行了规范的介绍，该网络结合了高功能和低功能( f ) 动态交联结，以赋予网络承载、耗散和自修复能力。这种独特的网络配置类型为由共价和可逆交联组成的传统双结网络提供了替代方案。高f连接可以提供类似于共价交联的承载能力，同时保留自我修复的能力，同时赋予高f产生的刺激响应特性结种。我们使用金属配位聚合物水凝胶网络展示了该设计基序的机械性能，该网络通过不同比例的金属纳米颗粒（高f）和金属离子（低f）交联点进行动态交联。我们还展示了纳米粒子交联聚合物自发自组装成各向异性片材，这可推广用于设计具有低体积分数渗透高f网络的双结功能关联网络。