Humidity responsive self-healing based on intermolecular hydrogen bonding and metal–ligand coordination

RSC Advances ◽  
2016 ◽  
Vol 6 (92) ◽  
pp. 89757-89763 ◽  
Author(s):  
Yanxi Zhu ◽  
Hongyun Xuan ◽  
Jiaoyu Ren ◽  
Xuefan Liu ◽  
Bo Zhao ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Healing Process ◽  
Intermolecular Hydrogen Bonding ◽  
Self Healing ◽  
Ligand Coordination ◽  
Metal Ligand

Self-healing process occurring when a self-healing Co–CS/PAA PEM film is integrated (I), damaged (II), self-healing (III), and self-healed (IV).

Self-healing flexible sensor based on metal-ligand coordination

2020 ◽  
Vol 394 ◽  
pp. 124932 ◽  
Author(s):  
Zhixi Li ◽  
Yifei Shan ◽  
Xiaoxiao Wang ◽  
Hao Li ◽  
Kun Yang ◽  
...  
Keyword(s):  
Self Healing ◽  
Flexible Sensor ◽  
Ligand Coordination ◽  
Metal Ligand

scholarly journals Mechano-responsive hydrogen-bonding array of thermoplastic polyurethane elastomer captures both strength and self-healing

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Youngho Eom ◽  
Seon-Mi Kim ◽  
Minkyung Lee ◽  
Hyeonyeol Jeon ◽  
Jaeduk Park ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Thermoplastic Polyurethane ◽  
Healing Process ◽  
Polyurethane Elastomer ◽  
Self Healing ◽  
Static Mode ◽  
Soft Segments ◽  
Hard Segments ◽  
Thermoplastic Polyurethane Elastomer ◽  
Dynamic Exchange

AbstractSelf-repairable materials strive to emulate curable and resilient biological tissue; however, their performance is currently insufficient for commercialization purposes because mending and toughening are mutually exclusive. Herein, we report a carbonate-type thermoplastic polyurethane elastomer that self-heals at 35 °C and exhibits a tensile strength of 43 MPa; this elastomer is as strong as the soles used in footwear. Distinctively, it has abundant carbonyl groups in soft-segments and is fully amorphous with negligible phase separation due to poor hard-segment stacking. It operates in dual mechano-responsive mode through a reversible disorder-to-order transition of its hydrogen-bonding array; it heals when static and toughens when dynamic. In static mode, non-crystalline hard segments promote the dynamic exchange of disordered carbonyl hydrogen-bonds for self-healing. The amorphous phase forms stiff crystals when stretched through a transition that orders inter-chain hydrogen bonding. The phase and strain fully return to the pre-stressed state after release to repeat the healing process.

scholarly journals Modulating the thermomechanical properties and self-healing efficiency of siloxane-based soft polymers through metal–ligand coordination

2020 ◽  
Vol 44 (21) ◽  
pp. 8977-8985 ◽  
Author(s):  
Julia Pignanelli ◽  
Zhiyuan Qian ◽  
Xiaodan Gu ◽  
Mohammed Jalal Ahamed ◽  
Simon Rondeau-Gagné
Keyword(s):  
Thermomechanical Properties ◽  
Self Healing ◽  
Efficient Strategy ◽  
Healing Efficiency ◽  
Ligand Coordination ◽  
Metal Ligand ◽  
Soft Polymers

An efficient strategy to modulate the thermomechanical properties and self-healing of soft polymers has been developed by rationally selecting the metal used for supramolecular crosslinking.

Stretchable Self-Healing Polymeric Dielectrics Cross-Linked Through Metal–Ligand Coordination

2016 ◽  
Vol 138 (18) ◽  
pp. 6020-6027 ◽  
Author(s):  
Ying-Li Rao ◽  
Alex Chortos ◽  
Raphael Pfattner ◽  
Franziska Lissel ◽  
Yu-Cheng Chiu ◽  
...  
Keyword(s):  
Self Healing ◽  
Ligand Coordination ◽  
Polymeric Dielectrics ◽  
Metal Ligand
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