A pH-induced self-healable shape memory hydrogel with metal-coordination cross-links

2019 ◽  
Vol 10 (15) ◽  
pp. 1920-1929 ◽  
Author(s):  
Liuxuan Lu ◽  
Tian Tian ◽  
Shanshan Wu ◽  
Tao Xiang ◽  
Shaobing Zhou
Keyword(s):  
Shape Memory ◽  
Metal Coordination ◽  
Self Healing ◽  
Ph Values ◽  
Cross Links

A 4-armed PEG–DA hydrogel was fabricated, which showed regulated shape memory and self-healing properties at different pH values.

A multifunctional metal-biopolymer coordinated double network hydrogel combined with multi-stimulus responsiveness, self-healing, shape memory and antibacterial properties

2020 ◽  
Vol 8 (11) ◽  
pp. 3193-3201 ◽  
Author(s):  
Kun Yan ◽  
Feiyang Xu ◽  
Chunyu Wang ◽  
Yingying Li ◽  
Yuanli Chen ◽  
...  
Keyword(s):  
Coordination Chemistry ◽  
Shape Memory ◽  
Antibacterial Properties ◽  
Metal Coordination ◽  
Self Healing ◽  
Double Network ◽  
Assembly Technology

A universal, straightforward macroscale assembly technology has been presented for fabrication of polysaccharide-based multifunctional DN gels based on metal coordination chemistry.

scholarly journals Healing through Histidine: Bioinspired Pathways to Self-Healing Polymers via Imidazole–Metal Coordination

Biomimetics ◽  
2019 ◽  
Vol 4 (1) ◽  
pp. 20 ◽  
Author(s):  
Stefan Zechel ◽  
Martin Hager ◽  
Tobias Priemel ◽  
Matthew Harrington
Keyword(s):  
Polymeric Materials ◽  
Synthetic Polymers ◽  
Metal Coordination ◽  
Self Healing ◽  
Amino Acid Residues ◽  
Plastic Yield ◽  
Current State ◽  
Cross Links ◽  
Mussel Byssus

Biology offers a valuable inspiration toward the development of self-healing engineering composites and polymers. In particular, chemical level design principles extracted from proteinaceous biopolymers, especially the mussel byssus, provide inspiration for design of autonomous and intrinsic healing in synthetic polymers. The mussel byssus is an acellular tissue comprised of extremely tough protein-based fibers, produced by mussels to secure attachment on rocky surfaces. Threads exhibit self-healing response following an apparent plastic yield event, recovering initial material properties in a time-dependent fashion. Recent biochemical analysis of the structure–function relationships defining this response reveal a key role of sacrificial cross-links based on metal coordination bonds between Zn2+ ions and histidine amino acid residues. Inspired by this example, many research groups have developed self-healing polymeric materials based on histidine (imidazole)–metal chemistry. In this review, we provide a detailed overview of the current understanding of the self-healing mechanism in byssal threads, and an overview of the current state of the art in histidine- and imidazole-based synthetic polymers.

Intelligent rubber with tailored properties for self-healing and shape memory

2015 ◽  
Vol 3 (24) ◽  
pp. 12864-12872 ◽  
Author(s):  
Dong Wang ◽  
Jing Guo ◽  
Huan Zhang ◽  
Beichen Cheng ◽  
Heng Shen ◽  
...  
Keyword(s):  
Hydrogen Bonds ◽  
Shape Memory ◽  
Self Healing ◽  
Memory Functions ◽  
Cross Links ◽  
Ionic Hydrogen Bonds

Thermoreversible rubbers are prepared by the thiol-ene functionalized polybutadiene oligomers via dynamic ionic hydrogen bonds and covalent cross-links, exhibiting tailored properties for self-healing and shape memory functions.

New star-shape memory polyurethanes capable of thermally induced recovery and hydrogen bond-self-healing

2021 ◽  
Author(s):  
Zonghui Huang ◽  
Jianfeng Ban ◽  
Lulu Pan ◽  
Shuqing Cai ◽  
Junqiu Liao
Keyword(s):  
Hydrogen Bond ◽  
Shape Memory ◽  
Self Healing ◽  
Thermally Induced ◽  
Thermally Responsive

Star-shape memory polyurethanes that combine thermally responsive and self-healing properties.

Self-healing poly(siloxane-urethane) elastomers with remoldability, shape memory and biocompatibility

2016 ◽  
Vol 7 (47) ◽  
pp. 7278-7286 ◽  
Author(s):  
Jian Zhao ◽  
Rui Xu ◽  
Gaoxing Luo ◽  
Jun Wu ◽  
Hesheng Xia
Keyword(s):  
Mechanical Property ◽  
Shape Memory ◽  
Microphase Separation ◽  
Diels Alder ◽  
Good Mechanical Property ◽  
Self Healing ◽  
Healing Efficiency ◽  
Good Biocompatibility

The poly(siloxane-urethane) elastomers with microphase separation structure and Diels–Alder bonds show high healing efficiency, good mechanical property and good biocompatibility.

Catalyst-free self-healing fully bio-based vitrimers derived from tung oil: Strong mechanical properties, shape memory, and recyclability

2021 ◽  
Vol 171 ◽  
pp. 113978
Author(s):  
Ya-zhou Xu ◽  
Pan Fu ◽  
Song-lin Dai ◽  
Hai-bo Zhang ◽  
Liang-wu Bi ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Shape Memory ◽  
Self Healing ◽  
Tung Oil ◽  
Catalyst Free
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