scholarly journals Self-healing zwitterionic sulfobetaine nanocomposite hydrogels with good mechanical properties

RSC Advances ◽  
2019 ◽  
Vol 9 (55) ◽  
pp. 31806-31811 ◽  
Author(s):  
Yinlei Lin ◽  
Zheng Zeng ◽  
Yuhao Li ◽  
Sheng Sun ◽  
Xiaoting Liu ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Ambient Temperature ◽  
Self Healing ◽  
Nanocomposite Hydrogels

The prepared zwitterionic sulfobetaine nanocomposite hydrogels can autonomously repair incisions or cracks at ambient temperature without the need for any stimulus and possess excellent mechanical properties.

scholarly journals Dynamic Mussel-Inspired Chitin Nanocomposite Hydrogels for Wearable Strain Sensors

Polymers ◽  
2020 ◽  
Vol 12 (6) ◽  
pp. 1416 ◽  
Author(s):  
Pejman Heidarian ◽  
Abbas Z. Kouzani ◽  
Akif Kaynak ◽  
Ali Zolfagharian ◽  
Hossein Yousefi
Keyword(s):  
Mechanical Properties ◽  
Polyacrylic Acid ◽  
Strain Sensors ◽  
Self Healing ◽  
Network Stability ◽  
Ferric Ions ◽  
Trade Off ◽  
Nanocomposite Hydrogels ◽  
Healing Efficiency ◽  
Hydrogel Network

It is an ongoing challenge to fabricate an electroconductive and tough hydrogel with autonomous self-healing and self-recovery (SELF) for wearable strain sensors. Current electroconductive hydrogels often show a trade-off between static crosslinks for mechanical strength and dynamic crosslinks for SELF properties. In this work, a facile procedure was developed to synthesize a dynamic electroconductive hydrogel with excellent SELF and mechanical properties from starch/polyacrylic acid (St/PAA) by simply loading ferric ions (Fe3+) and tannic acid-coated chitin nanofibers (TA-ChNFs) into the hydrogel network. Based on our findings, the highest toughness was observed for the 1 wt.% TA-ChNF-reinforced hydrogel (1.43 MJ/m3), which is 10.5-fold higher than the unreinforced counterpart. Moreover, the 1 wt.% TA-ChNF-reinforced hydrogel showed the highest resistance against crack propagation and a 96.5% healing efficiency after 40 min. Therefore, it was chosen as the optimized hydrogel to pursue the remaining experiments. Due to its unique SELF performance, network stability, superior mechanical, and self-adhesiveness properties, this hydrogel demonstrates potential for applications in self-wearable strain sensors.

Novel antifouling self-healing poly(carboxybetaine methacrylamide-co-HEMA) nanocomposite hydrogels with superior mechanical properties

2013 ◽  
Vol 1 (41) ◽  
pp. 5644 ◽  
Author(s):  
Nina Yu. Kostina ◽  
Shahriar Sharifi ◽  
Andres de los Santos Pereira ◽  
Jiří Michálek ◽  
Dirk W. Grijpma ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Self Healing ◽  
Nanocomposite Hydrogels ◽  
Superior Mechanical Properties

Biocompatible double network poly(acrylamide-co-acrylic acid)–Al3+/poly(vinyl alcohol)/graphene oxide nanocomposite hydrogels with excellent mechanical properties, self-recovery and self-healing ability

2020 ◽  
Vol 44 (25) ◽  
pp. 10390-10403
Author(s):  
Zhanxin Jing ◽  
Xueying Xian ◽  
Qiuhong Huang ◽  
Qiurong Chen ◽  
Pengzhi Hong ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Graphene Oxide ◽  
Acrylic Acid ◽  
Poly Vinyl Alcohol ◽  
Self Healing ◽  
Double Network ◽  
Nanocomposite Hydrogels ◽  
Non Covalent Interactions ◽  
Covalent Interactions ◽  
Poly Acrylamide

Biocompatible double network PAmAA–Al3+/PVA/GO nanocomposite hydrogels based on non-covalent interactions were synthesized, and the non-covalent interactions endow the materials with good self-recovery and self-healing performances.

scholarly journals Injectable, self-healing mesoporous silica nanocomposite hydrogels with improved mechanical properties

Nanoscale ◽  
2021 ◽  
Author(s):  
A. Zengin ◽  
J. P. O. Castro ◽  
P. Habibovic ◽  
S. H. van Rijt
Keyword(s):  
Mechanical Properties ◽  
Mesoporous Silica ◽  
Mechanical Strength ◽  
Silica Nanoparticles ◽  
Mesoporous Silica Nanoparticles ◽  
Self Healing ◽  
Peg Hydrogels ◽  
Nanocomposite Hydrogels ◽  
Promising Strategy ◽  
Silica Nanocomposite

Nanocomposites created by dynamic crosslinking of mesoporous silica nanoparticles to PEG hydrogels represents a promising strategy to confer mechanical strength and rapid self-healing capabilities to hydrogels.

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...

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