High efficiency bionic self-healing flexible waterborne polyurethane elastic film based on cyclodextrin-ferrocene host-guest interaction

2021 ◽  
Author(s):  
Ending Zhang ◽  
Jun Shi ◽  
Luqi Xiao ◽  
qiang zhang ◽  
Maoping Lu ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
High Efficiency ◽  
Waterborne Polyurethane ◽  
Self Healing ◽  
Elastic Film

To prepare flexible elastomer materials with favorable mechanical properties and bionic self-healing ability is still a challenge presently. Herein, a novel ferrocene-diol (Fc-diol) was synthesized and incorporated into waterborne polyurethane...

An Unparalleled H-bonding and Ion-bonding Crosslinked Waterborne Polyurethane with Super Toughness and Unprecedented Fracture Energy

2021 ◽  
Author(s):  
Yuan Yao ◽  
Bo Liu ◽  
Ziyang Xu ◽  
Jianhai Yang ◽  
Wenguang Liu
Keyword(s):  
Mechanical Properties ◽  
Fracture Energy ◽  
Waterborne Polyurethane ◽  
Self Healing ◽  
Polyurethane Elastomers

Self-healing polyurethane elastomers have been extensively studied; however, developing an eco-friendly self-healable waterborne polyurethane (WPU) with exceptional mechanical properties remains a great challenge. Herein, we report healable, and highly tough...

High stretchable, bionic self-healing waterborne polyurethane elastic film enabled by multiple hydrogen bonding for flexible strain sensors

2021 ◽  
Author(s):  
Ending Zhang ◽  
Xiaohong Liu ◽  
Yingchun Liu ◽  
Jun Shi ◽  
Xiaobin Li ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Waterborne Polyurethane ◽  
Strain Sensors ◽  
Self Healing ◽  
Flexible Sensors ◽  
Electronic Skin ◽  
Elastic Film ◽  
Multiple Hydrogen Bonding

Flexible elastomer material with high stretchability and self-healing performance is the preferred substrates for preparing multi-function flexible sensors and bionic electronic skin. However, it is still a great challenge to...

Autonomous self-healing polyisoprene elastomers with high modulus and good toughness based on the synergy of dynamic ionic crosslinks and highly disordered crystals

2020 ◽  
Vol 11 (41) ◽  
pp. 6549-6558
Author(s):  
Yohei Miwa ◽  
Mayu Yamada ◽  
Yu Shinke ◽  
Shoichi Kutsumizu
Keyword(s):  
Mechanical Properties ◽  
Room Temperature ◽  
Self Healing ◽  
High Modulus ◽  
Disordered Crystals ◽  
Ionic Crosslinks

We designed a novel polyisoprene elastomer with high mechanical properties and autonomous self-healing capability at room temperature facilitated by the coexistence of dynamic ionic crosslinks and crystalline components that slowly reassembled.

Polypyrrole/PU hybrid hydrogels: electrically conductive and fast self-healing for the potential application in body-monitor sensor

2021 ◽  
Author(s):  
Zhanyu Jia ◽  
Guangyao Li ◽  
Juan Wang ◽  
shouhua Su ◽  
Jie Wen ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Electrical Conductivity ◽  
Potential Application ◽  
Self Healing ◽  
Electrically Conductive ◽  
Sensor Application ◽  
Hybrid Hydrogels ◽  
Health Monitor

Conductivity, self-healing and moderate mechanical properties are necessary for multifunctional hydrogels which have great potential in health-monitor sensor application. However, the combination of electrical conductivity, self-healing and good mechanical properties...

Self-healing, Highly Elastic and Amphiphilic Silicone-based Polyurethane for Antifouling Coatings

2021 ◽  
Author(s):  
Xiaobin Lin ◽  
Qingyi Xie ◽  
Chunfeng Ma ◽  
Guangzhao Zhang
Keyword(s):  
Mechanical Properties ◽  
Silicone Elastomer ◽  
Self Healing ◽  
Fouling Resistance ◽  
The Poor ◽  
Antifouling Coatings ◽  
Fouling Release

Silicone elastomer coatings have attracted increasing attention owing to its eco-friendly nature, excellent fouling release ability and drag-reducing property. However, the poor mechanical properties and lack of fouling resistance limits...

The preparation of hydrogels with highly efficient self-healing and excellent mechanical properties

2021 ◽  
Vol 329 ◽  
pp. 115581
Author(s):  
Chaoxian Chen ◽  
Zhongcun Li ◽  
Siwen Chen ◽  
Lingzhi Kong ◽  
Zhihao Guo ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Self Healing ◽  
Highly Efficient

scholarly journals The Effect of Superabsorbent Polymers on the Microstructure and Self-Healing Properties of Cementitious-Based Composite Materials

2021 ◽  
Vol 11 (2) ◽  
pp. 700
Author(s):  
Irene A. Kanellopoulou ◽  
Ioannis A. Kartsonakis ◽  
Costas A. Charitidis
Keyword(s):  
Mechanical Properties ◽  
Composite Materials ◽  
Hybrid Structure ◽  
The Self ◽  
Self Healing ◽  
Cementitious Composite ◽  
Superabsorbent Polymers ◽  
Porosity Reduction ◽  
Environment Control ◽  
The Impact

Cementitious structures have prevailed worldwide and are expected to exhibit further growth in the future. Nevertheless, cement cracking is an issue that needs to be addressed in order to enhance structure durability and sustainability especially when exposed to aggressive environments. The purpose of this work was to examine the impact of the Superabsorbent Polymers (SAPs) incorporation into cementitious composite materials (mortars) with respect to their structure (hybrid structure consisting of organic core—inorganic shell) and evaluate the microstructure and self-healing properties of the obtained mortars. The applied SAPs were tailored to maintain their functionality in the cementitious environment. Control and mortar/SAPs specimens with two different SAPs concentrations (1 and 2% bwoc) were molded and their mechanical properties were determined according to EN 196-1, while their microstructure and self-healing behavior were evaluated via microCT. Compressive strength, a key property for mortars, which often degrades with SAPs incorporation, in this work, practically remained intact for all specimens. This is coherent with the porosity reduction and the narrower range of pore size distribution for the mortar/SAPs specimens as determined via microCT. Moreover, the self-healing behavior of mortar-SAPs specimens was enhanced up to 60% compared to control specimens. Conclusively, the overall SAPs functionality in cementitious-based materials was optimized.

Waterborne polyurethane nanocomposite reinforced with amine intercalated α-zirconium phosphate - Study of thermal and mechanical properties

Polymer ◽  
2020 ◽  
Vol 186 ◽  
pp. 122008 ◽  
Author(s):  
Manoj B. Kale ◽  
Nidhin Divakaran ◽  
Suhail Mubarak ◽  
Duraisami Dhamodharan ◽  
T. Senthil ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Zirconium Phosphate ◽  
Waterborne Polyurethane ◽  
Thermal And Mechanical Properties

scholarly journals Recyclable Self-Healing Polyurethane Cross-Linked by Alkyl Diselenide with Enhanced Mechanical Properties

Polymers ◽  
2019 ◽  
Vol 11 (5) ◽  
pp. 773 ◽  
Author(s):  
Yuqing Qian ◽  
Xiaowei An ◽  
Xiaofei Huang ◽  
Xiangqiang Pan ◽  
Jian Zhu ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Room Temperature ◽  
Amide Bond ◽  
Self Healing ◽  
Healing Efficiency ◽  
Polyurethane Networks ◽  
Combined Action ◽  
Cross Linker ◽  
Dynamic Structures ◽  
External Interventions

Dynamic structures containing polymers can behave as thermosets at room temperature while maintaining good mechanical properties, showing good reprocessability, repairability, and recyclability. In this work, alkyl diselenide is effectively used as a dynamic cross-linker for the design of self-healing poly(urea–urethane) elastomers, which show quantitative healing efficiency at room temperature, without the need for any catalysts or external interventions. Due to the combined action of the urea bond and amide bond, the material has better mechanical properties. We also compared the self-healing effect of alkyl diselenide-based polyurethanes and alkyl disulfide-based polyurethanes. The alkyl diselenide has been incorporated into polyurethane networks using a para-substituted amine diphenyl alkyl diselenide. The resulting materials not only exhibit faster self-healing properties than the corresponding disulfide-based materials, but also show the ability to be processed at temperatures as low as 60 °C.

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