Bio-based, Robust, Shape Memory, Self-Healing and Recyclable Elastomer Based on Semi-interpenetrating Dynamic Network

2021 ◽  
Author(s):  
Xin Qi ◽  
Jichuan Zhang ◽  
Liqun Zhang ◽  
Dongmei Yue
Keyword(s):  
Shape Memory ◽  
Dynamic Network ◽  
Self Healing ◽  
High Toughness

Fabricating materials with a combination of high toughness, self-healing, shape memory and reprocessing properties, especially derived from renewable precursors, remains a challenge. Herein, we demonstrate a simple way to prepare...

Imidazolium-based ionic polyurethanes with high toughness, tunable healing efficiency and antibacterial activities

2020 ◽  
Vol 11 (4) ◽  
pp. 867-875 ◽  
Author(s):  
Ning Duan ◽  
Zhe Sun ◽  
Yongyuan Ren ◽  
Ziyang Liu ◽  
Lili Liu ◽  
...  
Keyword(s):  
Antibacterial Activity ◽  
Shape Memory ◽  
Antibacterial Activities ◽  
Self Healing ◽  
High Toughness ◽  
Healing Efficiency

Ionic polyurethanes (PUs) with high toughness, fast self-healing ability, antibacterial activity and shape memory behaviors are synthesized.

scholarly journals Ultrarobust, tough and highly stretchable self-healing materials based on cartilage-inspired noncovalent assembly nanostructure

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Yuyan Wang ◽  
Xin Huang ◽  
Xinxing Zhang
Keyword(s):  
Spider Silk ◽  
Self Healing ◽  
High Toughness ◽  
Healing Efficiency ◽  
Strong Interfacial Interaction ◽  
Highly Stretchable ◽  
Noncovalent Bonds ◽  
Actuation Devices ◽  
Noncovalent Bonding ◽  
Polyurethane Matrix

AbstractSelf-healing materials integrated with excellent mechanical strength and simultaneously high healing efficiency would be of great use in many fields, however their fabrication has been proven extremely challenging. Here, inspired by biological cartilage, we present an ultrarobust self-healing material by incorporating high density noncovalent bonds at the interfaces between the dentritic tannic acid-modified tungsten disulfide nanosheets and polyurethane matrix to collectively produce a strong interfacial interaction. The resultant nanocomposite material with interwoven network shows excellent tensile strength (52.3 MPa), high toughness (282.7 MJ m‒3, which is 1.6 times higher than spider silk and 9.4 times higher than metallic aluminum), high stretchability (1020.8%) and excellent healing efficiency (80–100%), which overturns the previous understanding of traditional noncovalent bonding self-healing materials where high mechanical robustness and healing ability are mutually exclusive. Moreover, the interfacical supramolecular crosslinking structure enables the functional-healing ability of the resultant flexible smart actuation devices. This work opens an avenue toward the development of ultrarobust self-healing materials for various flexible functional devices.

Extremely Tough and Healable Elastomer Realized via Reducing the Crystallinity of Rigid Domain

2021 ◽  
Author(s):  
Chong Xing ◽  
Haomin Wu ◽  
Ruichun Du ◽  
Qiuhong Zhang ◽  
Xudong Jia
Keyword(s):  
Metal Ions ◽  
Self Healing ◽  
High Toughness

We propose a new concept of “toughening the rigid” by adding metal ions to sacrifice the crystallinity of the rigid domain, which makes the elastomers with high toughness and self-healing...

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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