Design of Self-Healing and Electrically Conductive Silk Fibroin-Based Hydrogels

2019 ◽  
Vol 11 (22) ◽  
pp. 20394-20403 ◽  
Author(s):  
Lichao Liu ◽  
Yueying Han ◽  
Shanshan Lv
Keyword(s):  
Silk Fibroin ◽  
Self Healing ◽  
Electrically Conductive

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...

scholarly journals Irreversible and Self-Healing Electrically Conductive Hydrogels Made of Bio-Based Polymers

2022 ◽  
Vol 23 (2) ◽  
pp. 842
Author(s):  
Ahmed Ali Nada ◽  
Anita Eckstein Andicsová ◽  
Jaroslav Mosnáček
Keyword(s):  
Renewable Resources ◽  
Mechanical Stability ◽  
Conductive Polymers ◽  
Special Focus ◽  
Self Healing ◽  
Natural Polymers ◽  
Electrically Conductive ◽  
Preparation Methods ◽  
Cross Links ◽  
Conductive Hydrogels

Electrically conductive materials that are fabricated based on natural polymers have seen significant interest in numerous applications, especially when advanced properties such as self-healing are introduced. In this article review, the hydrogels that are based on natural polymers containing electrically conductive medium were covered, while both irreversible and reversible cross-links are presented. Among the conductive media, a special focus was put on conductive polymers, such as polyaniline, polypyrrole, polyacetylene, and polythiophenes, which can be potentially synthesized from renewable resources. Preparation methods of the conductive irreversible hydrogels that are based on these conductive polymers were reported observing their electrical conductivity values by Siemens per centimeter (S/cm). Additionally, the self-healing systems that were already applied or applicable in electrically conductive hydrogels that are based on natural polymers were presented and classified based on non-covalent or covalent cross-links. The real-time healing, mechanical stability, and electrically conductive values were highlighted.

A novel highly stretchable, adhesive and self-healing silk fibroin powder-based hydrogel containing dual-network structure

2019 ◽  
Vol 252 ◽  
pp. 126-129 ◽  
Author(s):  
Cai Wang ◽  
Yili Du ◽  
Biyan Chen ◽  
Shaojun Chen ◽  
Yiping Wang
Keyword(s):  
Silk Fibroin ◽  
Network Structure ◽  
Self Healing ◽  
Highly Stretchable

Autonomous Self-Healing Silk Fibroin Injectable Hydrogels Formed via Surfactant-Free Hydrophobic Association

2019 ◽  
Vol 12 (1) ◽  
pp. 1628-1639 ◽  
Author(s):  
Lei Meng ◽  
Changyou Shao ◽  
Chen Cui ◽  
Feng Xu ◽  
Jiandu Lei ◽  
...  
Keyword(s):  
Silk Fibroin ◽  
Hydrophobic Association ◽  
Self Healing ◽  
Injectable Hydrogels

scholarly journals Electrically Self-Healing Thermoset MWCNTs Composites Based on Diels-Alder and Hydrogen Bonds

Polymers ◽  
2019 ◽  
Vol 11 (11) ◽  
pp. 1885 ◽  
Author(s):  
Macedo Lima ◽  
Orozco ◽  
Picchioni ◽  
Moreno-Villoslada ◽  
Pucci ◽  
...  
Keyword(s):  
Polymer Nanocomposites ◽  
Thermomechanical Properties ◽  
Diels Alder ◽  
Product Performance ◽  
Hydroxyl Groups ◽  
Self Healing ◽  
Electrically Conductive ◽  
Hydrogen Bonding Interactions ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes

In this work, we prepared electrically conductive self-healing nanocomposites. The material consists of multi-walled carbon nanotubes (MWCNT) that are dispersed into thermally reversible crosslinked polyketones. The reversible nature is based on both covalent (Diels-Alder) and non-covalent (hydrogen bonding) interactions. The design allowed for us to tune the thermomechanical properties of the system by changing the fractions of filler, and diene-dienophile and hydroxyl groups. The nanocomposites show up to 1 × 104 S/m electrical conductivity, reaching temperatures between 120 and 150 °C under 20–50 V. The self-healing effect, induced by electricity was qualitatively demonstrated as microcracks were repaired. As pointed out by electron microscopy, samples that were already healed by electricity showed a better dispersion of MWCNT within the polymer. These features point toward prolonging the service life of polymer nanocomposites, improving the product performance, making it effectively stronger and more reliable.

A medical adhesive used in a wet environment by blending tannic acid and silk fibroin

2020 ◽  
Vol 8 (9) ◽  
pp. 2694-2701 ◽  
Author(s):  
Xijie Gao ◽  
Qiyuan Dai ◽  
Longtao Yao ◽  
Hua Dong ◽  
Qingtao Li ◽  
...  
Keyword(s):  
Silk Fibroin ◽  
Tannic Acid ◽  
Self Healing ◽  
Medical Adhesive

A medical adhesive called TASK based on polyphenol-gel systems was developed and showed wet-adhesive, stretchable, self-healing and restorable properties.

Electrically Conductive Polyaniline/Silk Fibroin Composite for Ammonia and Acetaldehyde Sensing

2018 ◽  
Vol 26 (2) ◽  
pp. 177-187 ◽  
Author(s):  
Sharique Ahmad ◽  
Adil Sultan ◽  
Faiz Mohammad
Keyword(s):  
Silk Fibroin ◽  
Room Temperature ◽  
Ambient Air ◽  
Attenuated Total Reflectance ◽  
Electrically Conductive ◽  
Total Reflectance ◽  
Sensing Material ◽  
Prepared Material ◽  
Conductive Polyaniline

In this study, camphorsulphonic acid-doped conducting polyaniline/silk fibroin (Pani/SF) composites were prepared by in-situ polymerisation. The Pani/SF composite fibres were characterised by using Attenuated total reflectance-Fourier transform infrared (ATR-FTIR) spectroscopy, thermogravimetric analysis, scanning electron microscopy and digital photographs. Results indicated that the Pani was successfully coated on silk fibroin. The electrical properties of Pani/SF composite fibres were influenced by the extent of loading of aniline monomers. The as-prepared material was studied as a sensing material by observing the change in their electrical conductivity on exposure to ammonia and acetaldehyde, followed by ambient air at room temperature. It was found that the composite fibres showed good reversibility and conductivity decreased on exposure to higher concentration of ammonia and acetaldehyde vapours at room temperature.

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