Spatiotemporally Controlled Plasticity and Elasticity in 3D Multi-Shape Memory Structures Enabled by Elemental Sulfur-Derived Polysulfide Networks with Intrinsic NIR Responsiveness.,Macromolecular Rapid Communications

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Spatiotemporally Controlled Plasticity and Elasticity in 3D Multi-Shape Memory Structures Enabled by Elemental Sulfur-Derived Polysulfide Networks with Intrinsic NIR Responsiveness.
Macromolecular Rapid Communications ( IF 4.2 ) Pub Date : 2020-02-18 , DOI: 10.1002/marc.202000013
Ji Mok Lee _{1,

2} , Yong-Seok Choi ₃ , Guk Yun Noh ₁ , Woohwa Lee ₁ , Youngjae Yoo ₁ , Dong-Gyun Kim ₁ , Ho Gyu Yoon ₂ , Yong Seok Kim _{1,

4}

Affiliation

Thermadapt shape memory polymers (SMPs), utilizing a variety of dynamic covalent bond exchange mechanisms, have been extensively studied in recent years but it is still challenging to address several constraints in terms of limited accuracy and complexity for constructing 3D shape memory structures. Here, an effective and facile preparation of thermadapt SMPs based on elemental sulfur-derived poly(phenylene polysulfide) networks (PSNs) is presented. These SMPs possess intrinsic near-infrared (NIR)-induced photothermal conversion properties for spatiotemporal control of their plasticity and elasticity. The NIR-controllable plasticity and elasticity of the PSNs enable versatile shape manipulation of 3D multi-shape memory structures, including building block assembly, reconfiguration, shape fixing/recovery, and repair.

中文翻译：

由具有固有NIR响应能力的元素硫衍生的多硫化物网络实现的3D多形状记忆结构的时空控制的可塑性和弹性。

近年来，对利用多种动态共价键交换机制的Thermadapt形状记忆聚合物（SMP）进行了广泛的研究，但是在构造3D形状记忆结构的准确性和复杂性方面，要解决几个限制仍然是挑战。在这里，提出了基于元素硫衍生的聚苯撑多硫化物（PSNs）网络的有效而简便的热敏SMP制备方法。这些SMP具有固有的近红外（NIR）诱导的光热转换特性，可用于时空控制其可塑性和弹性。PSN的NIR可控制的可塑性和弹性实现了3D多形状记忆结构的多功能形状操纵，包括构件组装，重新配置，形状固定/恢复和修复。

更新日期：2020-02-18

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