Abstract
Electroactive hydrogels (EAHs) are receiving attention in soft robotics. 3D printing makes EAHs even more attractive, due to the diversification and elaboration of actuations. However, 3D printing needs a large amount of photoinitiator for faster printing, which makes the printed hydrogels so brittle that they cannot produce large scale 3D printing. Here, we developed a 3D printable EAH based on poly(3-sulfopropyl acrylate, potassium salt) (PSPA) using glycidyl methacrylated hyaluronic acid (GMHA) as a mechanically enhancing multileg long chain (MLLC) crosslinker. The MLLC crosslinking improved the stretchability of the PSPA-based hydrogel to 49% from 28%, while maintaining the same level of electroactivity. Additionally, the fracture toughness of the PSPA-based hydrogel remarkably increased from 11 to 40 J m-2 with crosslinking by the MLLC. Using the mechanically enhanced EAH, i.e. the GMHA-PSPA EAH, the 3D printing of elaborate structures, e.g. 'Leaning Tower of Pisa' and a hand, and their electroactuation were successfully demonstrated.
| Original language | English |
|---|---|
| Article number | 095016 |
| Journal | Smart Materials and Structures |
| Volume | 28 |
| Issue number | 9 |
| DOIs | |
| Publication status | Published - 2019 Aug 12 |
| Externally published | Yes |
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Keywords
- 3d printing
- Electroactive hydrogels
- Glycidyl methacrylated hyaluronic acid
- Poly(sulfopropyl acrylate
- Potassium salt)
- Soft actuators
- Soft robotics
ASJC Scopus subject areas
- Signal Processing
- Civil and Structural Engineering
- Atomic and Molecular Physics, and Optics
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Electrical and Electronic Engineering
Cite this
A mechanically enhanced electroactive hydrogel for 3D printing using a multileg long chain crosslinker. / Kang, Yong Woo; Woo, Jaesung; Lee, Hae Ryung; Sun, Jeong Yun.
In: Smart Materials and Structures, Vol. 28, No. 9, 095016, 12.08.2019.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - A mechanically enhanced electroactive hydrogel for 3D printing using a multileg long chain crosslinker
AU - Kang, Yong Woo
AU - Woo, Jaesung
AU - Lee, Hae Ryung
AU - Sun, Jeong Yun
PY - 2019/8/12
Y1 - 2019/8/12
N2 - Electroactive hydrogels (EAHs) are receiving attention in soft robotics. 3D printing makes EAHs even more attractive, due to the diversification and elaboration of actuations. However, 3D printing needs a large amount of photoinitiator for faster printing, which makes the printed hydrogels so brittle that they cannot produce large scale 3D printing. Here, we developed a 3D printable EAH based on poly(3-sulfopropyl acrylate, potassium salt) (PSPA) using glycidyl methacrylated hyaluronic acid (GMHA) as a mechanically enhancing multileg long chain (MLLC) crosslinker. The MLLC crosslinking improved the stretchability of the PSPA-based hydrogel to 49% from 28%, while maintaining the same level of electroactivity. Additionally, the fracture toughness of the PSPA-based hydrogel remarkably increased from 11 to 40 J m-2 with crosslinking by the MLLC. Using the mechanically enhanced EAH, i.e. the GMHA-PSPA EAH, the 3D printing of elaborate structures, e.g. 'Leaning Tower of Pisa' and a hand, and their electroactuation were successfully demonstrated.
AB - Electroactive hydrogels (EAHs) are receiving attention in soft robotics. 3D printing makes EAHs even more attractive, due to the diversification and elaboration of actuations. However, 3D printing needs a large amount of photoinitiator for faster printing, which makes the printed hydrogels so brittle that they cannot produce large scale 3D printing. Here, we developed a 3D printable EAH based on poly(3-sulfopropyl acrylate, potassium salt) (PSPA) using glycidyl methacrylated hyaluronic acid (GMHA) as a mechanically enhancing multileg long chain (MLLC) crosslinker. The MLLC crosslinking improved the stretchability of the PSPA-based hydrogel to 49% from 28%, while maintaining the same level of electroactivity. Additionally, the fracture toughness of the PSPA-based hydrogel remarkably increased from 11 to 40 J m-2 with crosslinking by the MLLC. Using the mechanically enhanced EAH, i.e. the GMHA-PSPA EAH, the 3D printing of elaborate structures, e.g. 'Leaning Tower of Pisa' and a hand, and their electroactuation were successfully demonstrated.
KW - 3d printing
KW - Electroactive hydrogels
KW - Glycidyl methacrylated hyaluronic acid
KW - Poly(sulfopropyl acrylate
KW - Potassium salt)
KW - Soft actuators
KW - Soft robotics
UR - http://www.scopus.com/inward/record.url?scp=85072622022&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85072622022&partnerID=8YFLogxK
U2 - 10.1088/1361-665X/ab325d
DO - 10.1088/1361-665X/ab325d
M3 - Article
AN - SCOPUS:85072622022
VL - 28
JO - Smart Materials and Structures
JF - Smart Materials and Structures
SN - 0964-1726
IS - 9
M1 - 095016
ER -