Supersoft, Stretchable, Tough, and Adhesive Elastomers with Dual Metal‐Ionic Crosslinked Double‐Network Structure,Macromolecular Chemistry and Physics

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Supersoft, Stretchable, Tough, and Adhesive Elastomers with Dual Metal‐Ionic Crosslinked Double‐Network Structure
Macromolecular Chemistry and Physics ( IF 2.5 ) Pub Date : 2020-02-13 , DOI: 10.1002/macp.201900516
Chuanxia Jiang ₁ , Yuliang Mai ₁ , Weihao Li ₁ , Bing Liao ₁

Affiliation

Soft, stretchable, tough, and adhesive elastomers are developed based on the metal‐ionic crosslinked double network structure, where the metal ion coordination of sulfonated poly(phenylene oxide) (SPPO) is used for the first network and the soft chemical crosslinked poly(ethyl acrylate) (PEA) is used for the second network. The influence of SPPO content on the tensile, cyclic tensile, adhesive, and rheological behavior of the elastomers is systematically investigated. It is observed that the elastomers are immensely soft and stretchable with tunable modulus from 0.038 to 0.086 MPa, fracture strain of ≈1400%, fracture stress in the range 0.20–1.2 MPa, work of extension of 0.72–5.6 MJ m⁻³, fast self‐recovery of 5 s after experiencing 200% strain, and robust adhesive behavior on glass substrates with interface debonding energy ≈35.2 J m⁻². The mechanical behavior of the double‐network elastomers at the macroscopic scale is related to the dynamic breaking and reforming of the metal‐ion coordination at the molecular scale in the first network. This study provides a facile approach for the synthesis of elastomers with multidimensional mechanical behavior and broadens the applications of the elastomers in the field of flexible electronic devices, soft robotics, among others.

中文翻译：

具有双金属离子交联双网状结构的超柔软，可拉伸，坚韧和粘合的弹性体

基于金属离子交联的双网状结构开发了柔软，可拉伸，坚韧和粘合的弹性体，其中磺化聚苯醚（SPPO）的金属离子配位用于第一个网状结构，而化学化学交联的聚（第二网络使用丙烯酸乙酯（PEA）。系统地研究了SPPO含量对弹性体的拉伸，循环拉伸，粘合和流变行为的影响。可以观察到，这些弹性体非常柔软且可拉伸，模量范围为0.038至0.086 MPa，断裂应变约为1400％，断裂应力在0.20至1.2 MPa之间，延伸功为0.72至5.6 MJ m ^-3。，在经历200％应变后5 s内快速自我恢复，以及在具有界面剥离能≈35.2J m ^-2的玻璃基板上的牢固粘合行为。在宏观尺度上，双网络弹性体的力学行为与第一个网络中分子尺度上金属离子配位的动态断裂和重整有关。这项研究为合成具有多维机械性能的弹性体提供了一种简便的方法，并拓宽了弹性体在柔性电子设备，软机器人等领域的应用。

更新日期：2020-02-13

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