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.

Self-healing, pH-sensitive and shape memory hydrogels based on acylhydrazone and hydrogen bonds

2021 ◽  
pp. 110838
Author(s):  
Liyuan Qiao ◽  
Chengde Liu ◽  
Cheng Liu ◽  
Lishuai Zong ◽  
Hongjian Gu ◽  
...  
Keyword(s):  
Hydrogen Bonds ◽  
Shape Memory ◽  
Ph Sensitive ◽  
Self Healing

THERMOREVERSIBLE CROSS-LINKING MALEIC ANHYDRIDE GRAFTED CHLOROBUTYL RUBBER WITH HYDROGEN BONDS (COMBINED WITH IONIC INTERACTIONS)

2014 ◽  
Vol 87 (3) ◽  
pp. 459-470 ◽  
Author(s):  
Lin Li ◽  
Jin Kuk Kim
Keyword(s):  
Hydrogen Bonds ◽  
Maleic Anhydride ◽  
Ionic Interactions ◽  
Cross Linking ◽  
External Energy ◽  
Scanning Calorimetry ◽  
Ionic Bonds ◽  
Cross Links ◽  
Ionic Hydrogen Bonds ◽  
Chlorobutyl Rubber

ABSTRACT Thermoreversible cross-linking polymers are designed based on reversible cross-linking bonds. These bonds are able to reversibly dissociate and associate upon the input of external energy, such as heat or light. Reprocessibility is possible for this kind of material. The objective was to thermoreversibly cross-link maleic anhydride grafted chlorobutyl rubber (MAH-g-CIIR) via a reaction with octadecylamine, with an excess to obtain amide-salts, which form both hydrogen bonds and ionic interactions. X-ray diffraction experiments showed the presence of microphase-separated aggregates that acted as physical cross-links for both the MAH-g-CIIR precursor and amide-salts. The tensile properties were improved by converting MAH-g-CIIR to amide-salts, because of the combination of hydrogen bonding and ionic interactions. The cross-linked materials could be repeatedly compression molded at 155 °C into homogeneous films. The differential scanning calorimetry curves and Fourier transform infrared spectra indicate that hydrogen bonds are of a thermoreversible nature, but the recovery of ionic bonds is impossible. After treatment with heating-cooling for up to three cycles, the tensile strength of the thermoreversible cross-linking CIIR was greatly reduced. The gradual reduction in the effectiveness of the ionic-hydrogen bonds is the major contribution to the reprocessibility of these materials.

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.

Shape Memory and Self-Healing Nanocomposites with POSS–POSS Interactions and Quadruple Hydrogen Bonds

2020 ◽  
Vol 2 (8) ◽  
pp. 3327-3338
Author(s):  
Sen Xu ◽  
Bingjie Zhao ◽  
Mohsin Raza ◽  
Lei Li ◽  
Huaming Wang ◽  
...  
Keyword(s):  
Hydrogen Bonds ◽  
Shape Memory ◽  
Self Healing

Castor-oil-based, robust, self-healing, shape memory, and reprocessable polymers enabled by dynamic hindered urea bonds and hydrogen bonds

2021 ◽  
pp. 131848
Author(s):  
Jinshuai Zhang ◽  
Chaoqun Zhang ◽  
Fei Song ◽  
Qianqian Shang ◽  
Yun Hu ◽  
...  
Keyword(s):  
Hydrogen Bonds ◽  
Shape Memory ◽  
Castor Oil ◽  
Self Healing

A solvent-free, transparent, self-healing polysiloxanes elastomer based on unsaturated carboxyl-amino ionic hydrogen bonds

Polymer ◽  
2021 ◽  
pp. 123903
Author(s):  
Jiaheng Mo ◽  
Xinyu Chen ◽  
Yubing Fu ◽  
Rui Li ◽  
Yaling Lin ◽  
...  
Keyword(s):  
Hydrogen Bonds ◽  
Solvent Free ◽  
Self Healing ◽  
Ionic Hydrogen Bonds

Tunable “soft and stiff”, self-healing, recyclable, thermadapt shape memory biomass polymers based on multiple hydrogen bonds and dynamic imine bonds

2019 ◽  
Vol 7 (21) ◽  
pp. 13400-13410 ◽  
Author(s):  
Fei Song ◽  
Zhaoshuang Li ◽  
Puyou Jia ◽  
Meng Zhang ◽  
Caiying Bo ◽  
...  
Keyword(s):  
Hydrogen Bonds ◽  
Shape Memory ◽  
Self Healing ◽  
Healing Efficiency ◽  
Multiple Hydrogen Bonds

We synthesized “thermadapt” biomass polymers with shape memory, ultrahigh stretchability or rigidity, remarkable self-healing efficiency, recyclability, and reusable adhesiveness.

Shape memory and self-healing properties of polymer-grafted Fe3O4 nanocomposites implemented with supramolecular quadruple hydrogen bonds

Polymer ◽  
2019 ◽  
Vol 172 ◽  
pp. 404-414 ◽  
Author(s):  
Sen Xu ◽  
Bingjie Zhao ◽  
Muhammad Adeel ◽  
Honggang Mei ◽  
Lei Li ◽  
...  
Keyword(s):  
Hydrogen Bonds ◽  
Shape Memory ◽  
Self Healing
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