Design and fabrication of mechanically strong and self-healing rubbers via metal-ligand coordination bonds as dynamic crosslinks

2021 ◽  
Vol 207 ◽  
pp. 108750
Author(s):  
Liming Cao ◽  
Zhou Gong ◽  
Cong Liu ◽  
Jianfeng Fan ◽  
Yukun Chen
Keyword(s):  
Self Healing ◽  
Ligand Coordination ◽  
Coordination Bonds ◽  
Metal Ligand

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 Swelling and Mechanical Properties of Polyacrylamide-derivative Dual-Crosslink Hydrogels Having Metal–Ligand Coordination Bonds as Transient Crosslinks

Gels ◽  
2021 ◽  
Vol 7 (2) ◽  
pp. 72
Author(s):  
Louis Debertrand ◽  
Jingwen Zhao ◽  
Costantino Creton ◽  
Tetsuharu Narita
Keyword(s):  
Mechanical Properties ◽  
Model Systems ◽  
Diffusion Method ◽  
Swelling Ratio ◽  
One Pot ◽  
Swelling Properties ◽  
One Pot Synthesis ◽  
Ligand Coordination ◽  
Coordination Bonds ◽  
Metal Ligand

Hydrogels that have both permanent chemical crosslinks and transient physical crosslinks are good model systems to represent tough gels. Such “dual-crosslink” hydrogels can be prepared either by simultaneous polymerization and dual crosslinking (one-pot synthesis) or by diffusion/complexation of the physical crosslinks to the chemical network (diffusion method). To study the effects of the preparation methods and of the crosslinking ratio on the mechanical properties, the equilibrium swelling of the dual-crosslink gels need to be examined. Since most of these gels are polyelectrolytes, their swelling properties are complex, so no systematic study has been reported. In this work, we synthesized model dual-crosslink gels with metal–ligand coordination bonds as physical crosslinks by both methods, and we proposed a simple way of adding salt to control the swelling ratio prepared by ion diffusion. Tensile and linear rheological tests of the gels at the same swelling ratio showed that during the one-pot synthesis, free radical polymerization was affected by the transition metal ions used as physical crosslinkers, while the presence of electrostatic interactions did not affect the role of the metal complexes on the mechanical properties.

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.

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).

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