Surface Engineering of Porous Carbon for Self-Healing Nanocomposite Hydrogels by Mussel-Inspired Chemistry and PET-ATRP

2019 ◽  
Vol 11 (41) ◽  
pp. 38126-38135 ◽  
Author(s):  
Dechao Fan ◽  
Guanglin Wang ◽  
Anyao Ma ◽  
Wenxiang Wang ◽  
Hou Chen ◽  
...  
Keyword(s):  
Porous Carbon ◽  
Surface Engineering ◽  
Self Healing ◽  
Nanocomposite Hydrogels

Surface-initiated PET-ATRP and mussel-inspired chemistry for surface engineering of MWCNTs and application in self-healing nanocomposite hydrogels

2020 ◽  
Vol 109 ◽  
pp. 110553 ◽  
Author(s):  
Xinyan Jiang ◽  
Mengzhen Xi ◽  
Liangjiu Bai ◽  
Wenxiang Wang ◽  
Lixia Yang ◽  
...  
Keyword(s):  
Surface Engineering ◽  
Self Healing ◽  
Nanocomposite Hydrogels

Notch insensitive and self-healing PNIPAm–PAM–clay nanocomposite hydrogels

Soft Matter ◽  
2014 ◽  
Vol 10 (19) ◽  
pp. 3506 ◽  
Author(s):  
Tao Wang ◽  
Shudian Zheng ◽  
Weixiang Sun ◽  
Xinxing Liu ◽  
Shiyu Fu ◽  
...  
Keyword(s):  
Self Healing ◽  
Nanocomposite Hydrogels

scholarly journals Electrospinning: A Powerful Tool to Improve the Corrosion Resistance of Metallic Surfaces Using Nanofibrous Coatings

Metals ◽  
2020 ◽  
Vol 10 (3) ◽  
pp. 350 ◽  
Author(s):  
Pedro J. Rivero ◽  
Deyo Maeztu Redin ◽  
Rafael J. Rodríguez
Keyword(s):  
Surface Engineering ◽  
Good Control ◽  
Self Healing ◽  
Intrinsic Properties ◽  
Functional Coatings ◽  
Metallic Surfaces ◽  
Electrospinning Technique ◽  
Deposition Parameters ◽  
Efficient Alternative ◽  
Fibre Morphology

The use of surface engineering techniques to tune-up the composition of nanostructured thin-films for developing functional coatings with advanced properties is a hot topic within the scientific community. The control of the coating structure at the nanoscale level allows improving the intrinsic properties of the surface compared to bulk materials. A nanodeposition technique with increasing popularity in the field of nanotechnology is electrospinning. This technique permits the fabrication of long and continuous fibres on the micro-nano scale. The good control over fibre morphology combined with its simplicity, cost-effectiveness, easy exploitability and scalability make electrospinning a very interesting tool for technological applications. This review is focused on the use of the electrospinning technique to protect metallic surfaces against corrosion. Polymeric precursors, from natural or biodegradable to synthetic polymers and copolymers can be electrospun with an adequate control of the operational deposition parameters (applied voltage, flow rate, distance tip to collector) and the intrinsic properties of the polymeric precursor (concentration, viscosity, solvent). The electrospun fibres can be used as an efficient alternative to encapsulate corrosion inhibitors of different nature (inorganic or organic) as well as self-healing agents which can be released to reduce the corrosion rate in the metallic surfaces.

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.

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