Tough, Swelling-Resistant, Self-Healing, and Adhesive Dual-Cross-Linked Hydrogels Based on Polymer–Tannic Acid Multiple Hydrogen Bonds

2018 ◽  
Vol 51 (5) ◽  
pp. 1696-1705 ◽  
Author(s):  
Hailong Fan ◽  
Jiahui Wang ◽  
Zhaoxia Jin
Keyword(s):  
Hydrogen Bonds ◽  
Tannic Acid ◽  
Self Healing ◽  
Multiple Hydrogen Bonds

scholarly journals A Robust, Tough and Multifunctional Polyurethane/Tannic Acid Hydrogel Fabricated by Physical-Chemical Dual Crosslinking

Polymers ◽  
2020 ◽  
Vol 12 (1) ◽  
pp. 239 ◽  
Author(s):  
Jie Wen ◽  
Xiaopeng Zhang ◽  
Mingwang Pan ◽  
Jinfeng Yuan ◽  
Zhanyu Jia ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Polyethylene Glycol ◽  
Hydrogen Bonds ◽  
Tannic Acid ◽  
Hydroxyl Groups ◽  
Self Healing ◽  
Physical Chemical ◽  
Biomedical Field ◽  
Physical Crosslinking

Commonly synthetic polyethylene glycol polyurethane (PEG–PU) hydrogels possess poor mechanical properties, such as robustness and toughness, which limits their load-bearing application. Hence, it remains a challenge to prepare PEG–PU hydrogels with excellent mechanical properties. Herein, a novel double-crosslinked (DC) PEG–PU hydrogel was fabricated by combining chemical with physical crosslinking, where trimethylolpropane (TMP) was used as the first chemical crosslinker and polyphenol compound tannic acid (TA) was introduced into the single crosslinked PU network by simple immersion process. The second physical crosslinking was formed by numerous hydrogen bonds between urethane groups of PU and phenol hydroxyl groups in TA, which can endow PEG–PU hydrogel with good mechanical properties, self-recovery and a self-healing capability. The research results indicated that as little as a 30 mg·mL−1 TA solution enhanced the tensile strength and fracture energy of PEG–PU hydrogel from 0.27 to 2.2 MPa, 2.0 to 9.6 KJ·m−2, respectively. Moreover, the DC PEG–PU hydrogel possessed good adhesiveness to diverse substrates because of TA abundant catechol groups. This work shows a simple and versatile method to prepare a multifunctional DC single network PEG–PU hydrogel with excellent mechanical properties, and is expected to facilitate developments in the biomedical field.

Flexible strain sensors with rapid self-healing by multiple hydrogen bonds

Polymer ◽  
2020 ◽  
Vol 202 ◽  
pp. 122657 ◽  
Author(s):  
Li Liu ◽  
Xinhe Li ◽  
Xiuyan Ren ◽  
Guang feng Wu
Keyword(s):  
Hydrogen Bonds ◽  
Strain Sensors ◽  
Self Healing ◽  
Multiple Hydrogen Bonds

Self-healing alginate hydrogel based on dynamic acylhydrazone and multiple hydrogen bonds

2019 ◽  
Vol 54 (11) ◽  
pp. 8814-8828 ◽  
Author(s):  
Liyuan Qiao ◽  
Chengde Liu ◽  
Cheng Liu ◽  
Liquan Yang ◽  
Manxia Zhang ◽  
...  
Keyword(s):  
Hydrogen Bonds ◽  
Self Healing ◽  
Alginate Hydrogel ◽  
Multiple 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.

Ultrafast and high-efficient self-healing epoxy coatings with active multiple hydrogen bonds for corrosion protection

2021 ◽  
Vol 187 ◽  
pp. 109485
Author(s):  
Tong Liu ◽  
Haichao Zhao ◽  
Dawei Zhang ◽  
Yuntian Lou ◽  
Luyao Huang ◽  
...  
Keyword(s):  
Hydrogen Bonds ◽  
Corrosion Protection ◽  
Self Healing ◽  
Epoxy Coatings ◽  
High Efficient ◽  
Multiple Hydrogen Bonds

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

scholarly journals Towards understanding of delignification of grassy and woody biomass in cholinium-based ionic liquids

2021 ◽  
Author(s):  
Mood Mohan ◽  
Hemant Choudhary ◽  
Anthe George ◽  
Blake A. Simmons ◽  
Kenneth Sale ◽  
...  
Keyword(s):  
Molecular Dynamics ◽  
Ionic Liquids ◽  
Hydrogen Bonds ◽  
Molecular Dynamics Simulations ◽  
Woody Biomass ◽  
Dissolution Mechanism ◽  
Dynamics Simulations ◽  
Multiple Hydrogen Bonds

Herein we report the dissolution mechanism of lignin in cholinium-based ionic liquids by molecular dynamics simulations. Multiple hydrogen bonds, longer HB lifetimes, and higher pKa of [Ch][Lys] makes it a better solvent for lignin than acidic ILs.

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