3D Printing/Interfacial Polymerization Coupling for the Fabrication of Conductive Hydrogel

2018 ◽  
Vol 303 (4) ◽  
pp. 1700356 ◽  
Author(s):  
Erika Fantino ◽  
Ignazio Roppolo ◽  
Dongxing Zhang ◽  
Junfeng Xiao ◽  
Annalisa Chiappone ◽  
...  
Keyword(s):  
3D Printing ◽  
Interfacial Polymerization ◽  
Conductive Hydrogel

3D printing of dual cross-linked hydrogel for fingerprint-like iontronic pressure sensor

2021 ◽  
Author(s):  
Honghao Yan ◽  
Jun Zhou ◽  
Chengyun Wang ◽  
Huaqiang Gong ◽  
Wu Liu ◽  
...  
Keyword(s):  
3D Printing ◽  
Pressure Sensor ◽  
High Sensitivity ◽  
Human Motion ◽  
Printing Technology ◽  
Digital Light Processing ◽  
Detection Range ◽  
3D Printing Technology ◽  
Flexible Devices ◽  
Conductive Hydrogel

Abstract Hydrogels with intrinsic high stretchability and flexibility are extremely attractive for soft electronics. However, the existing complicated and laborious methods (such as mold curing) to fabricate microstructured hydrogel (MH) still limit the development of hydrogel-based sensors for flexible devices. Herein, we use digital light processing 3D printing technology to rapidly construct double-network (DN) ionic conductive hydrogel, and then design and print fingerprint-like MH film to manufacture an iontronic pressure sensor. In particular, the DN hydrogel consists of acrylamide/acrylic acid to form a covalently cross-linked network, and magnesium chloride is introduced to form an ionic cross-linked physical network in the hydrogel. The printability (with resolution 150 μm) and mechanical property tunability of DN hydrogel enable the convenient fabrication of sensors. With the biomimetic fingerprint MH film, the iontronic pressure sensor not only has a high sensitivity (0.06 kPa-1), but also has a large detection range (26 Pa-70 kPa) and good stability (200 cycles of pressure loading). We demonstrated that our sensor can be applied to realize tactile sensing in a prosthetic application and detect human motion. With the easy strategy of constructing DN hydrogel with microstructures by 3D printing technology, hydrogel-based sensors are anticipated to be employed in more smart electronics.

Fabrication of conductive polyaniline hydrogel using porogen leaching and projection microstereolithography

2015 ◽  
Vol 3 (26) ◽  
pp. 5352-5360 ◽  
Author(s):  
Yibo Wu ◽  
Yong X. Chen ◽  
Jiahan Yan ◽  
Shihao Yang ◽  
Ping Dong ◽  
...  
Keyword(s):  
Interfacial Polymerization ◽  
Polymerization Process ◽  
Conductive Hydrogel ◽  
Conductive Polyaniline ◽  
Projection Microstereolithography

A PEGda–PANI conductive hydrogel developed using interfacial polymerization process can be applied to range of fabrication methodologies.

Characterization of Electrically Conductive Hydrogels - Polyaniline/Polyacrylamide and Graphene/Polyacrylamide

2020 ◽  
Vol 977 ◽  
pp. 59-64
Author(s):  
Xiau Yeen Lee ◽  
Hwee Wen Fan ◽  
Hui Jing Koh
Keyword(s):  
Electrical Conductivity ◽  
Young’S Modulus ◽  
Interfacial Polymerization ◽  
Young's Modulus ◽  
Swelling Ratio ◽  
Compression Tests ◽  
Electrically Conductive ◽  
Conductive Hydrogel ◽  
Conductive Hydrogels ◽  
Polymerization Method

Two types of electrically conductive hydrogels were prepared using polyaniline (PANI), graphene and polyacrylamide (PAA). PANI/PAA hydrogels were prepared using interfacial polymerization method and Graphene/PAA hydrogels were prepared using free radical polymerization method. Several characterization tests were carried out to investigate the properties of conductive hydrogel such as FTIR, electrical conductivity tests, swelling tests and compression tests. Results obtained were compared with non-conductive PAA hydrogels. FTIR indicated synthesis of both conductive hydrogels were succeeded. Incorporation of PANI and graphene into PAA hydrogels had significantly improved the electrical conductivity of the hydrogels. PANI/PAA hydrogels had a decrease in swelling ratio and an increase in Young’s modulus compared to PAA hydrogels. Meanwhile, Graphene/PAA hydrogel showed a totally different result. Swelling ratio of Graphene/PAA hydrogels was increased but the Young’s modulus was decreased as compared to PAA hydrogels.

3D Printing of Conductive Hydrogel–Elastomer Hybrids for Stretchable Electronics

2021 ◽  
Author(s):  
Heng Zhu ◽  
Xiaocheng Hu ◽  
Binhong Liu ◽  
Zhe Chen ◽  
Shaoxing Qu
Keyword(s):  
3D Printing ◽  
Stretchable Electronics ◽  
Conductive Hydrogel

Michael Pawlyn: Push the limits of 3D printing

Nature ◽  
2013 ◽  
Vol 494 (7436) ◽  
pp. 174-174 ◽  
Author(s):  
Michael Pawlyn
Keyword(s):  
3D Printing

High-resolution 3D printing in seconds

Nature ◽  
2020 ◽  
Vol 588 (7839) ◽  
pp. 594-595
Author(s):  
Cameron Darkes-Burkey ◽  
Robert F. Shepherd
Keyword(s):  
High Resolution ◽  
3D Printing

3D Printing for Development in the Global South

2014 ◽  
Author(s):  
Thomas Birtchnell ◽  
William Hoyle
Keyword(s):  
3D Printing ◽  
Global South
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