Triple non-covalent dynamic interactions enabled a tough and rapid room temperature self-healing elastomer for next-generation soft antennas

Si，Pengxiang1; Jiang，Fan2; Cheng，Qingsha S.1; Rivers，Geoffrey1; Xie，Hongjie2; Kyaw，Aung Ko Ko2; Zhao，Boxin1

2020-12-21

10.1039/d0ta06613c

Journal of Materials Chemistry A   影响因子和分区

2050-7488

2050-7496

An elastomer with both mechanical robustness and self-healing capability is desired and is much needed to meet the increasing demand for next-generation soft electronics that can not only remotely sense and wirelessly communicate but also autonomically self-heal once damaged. It has long been a challenge for materials scientists and engineers to design and process such type of polymer since mechanical robustness and self-healing are largely contradictory in nature. Herein, elastomer networks based on synergetic triple dynamic non-covalent interactions are developed through a polyurethane-polyethylenimine (PU-PEI) colloidal complex. The PU-PEI elastomer exhibits a maximum tensile strength of 15.8 MPa, breaking elongation of 1360% and toughness of 127.8 MJ m-3, which are superior to those of the current suite of self-healable elastomers at room temperature. Meanwhile, the dynamic hydrogen bonds, ionic interactions and polymer entanglement interactions yield a self-healing efficiency of 86% in 3 hours in water at room temperature. The self-healing behavior can also autonomically occur in humid air. In addition to its superior mechanical properties, the PU-PEI elastomer is transparent, recyclable and solution processable. It was found that the PU-PEI colloidal complex could be doped with conductive fillers to form a printable composite ink so as to enable a self-healable 2.4 GHz Wi-Fi soft antenna, demonstrating the potential of the developed elastomer for application in integral soft electronics.

SCI ; EI

英语

其他

Natural Sciences and Engineering Research Council of Canada (NSERC)[RGPIN-2019-04650][RGPAS-2019-00115]

Chemistry ; Energy & Fuels ; Materials Science

Chemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary

WOS:000599249300015

ROYAL SOC CHEMISTRY

20205209669292

Self-healing materials ; Sols ; Hydrogen bonds ; Microwave antennas ; Elastomers ; Complex networks ; Plastics ; Dynamics

Metals, Plastics, Wood and Other Structural Materials:415 ; Computer Systems and Equipment:722 ; Physical Chemistry:801.4 ; Chemical Products Generally:804 ; Polymer Products:817.1 ; Elastomers:818.2

2-s2.0-85097887855

Scopus

1.Department of Chemical Engineering,Waterloo Institute for Nanotechnology,Institute for Polymer Research,University of Waterloo,200 University Avenue West,N2L 3G1,Canada
2.Department of Electrical and Electronic Engineering,Southern University of Science and Technology,1088 Xueyuan Ave,518055,China

Si，Pengxiang,Jiang，Fan,Cheng，Qingsha S.,et al. Triple non-covalent dynamic interactions enabled a tough and rapid room temperature self-healing elastomer for next-generation soft antennas[J]. Journal of Materials Chemistry A,2020,8(47):25073-25084.

Si，Pengxiang.,Jiang，Fan.,Cheng，Qingsha S..,Rivers，Geoffrey.,Xie，Hongjie.,...&Zhao，Boxin.(2020).Triple non-covalent dynamic interactions enabled a tough and rapid room temperature self-healing elastomer for next-generation soft antennas.Journal of Materials Chemistry A,8(47),25073-25084.

Si，Pengxiang,et al."Triple non-covalent dynamic interactions enabled a tough and rapid room temperature self-healing elastomer for next-generation soft antennas".Journal of Materials Chemistry A 8.47(2020):25073-25084.