A mechanically enhanced electroactive hydrogel for 3D printing using a multileg long chain crosslinker
| Autor: | Yong Woo Kang, Jeong-Yun Sun, Hae-Ryung Lee, Jaesung Woo |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
010302 applied physics
Acrylate Materials science business.industry 3D printing 02 engineering and technology 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Atomic and Molecular Physics and Optics chemistry.chemical_compound chemistry Chemical engineering Mechanics of Materials 0103 physical sciences Signal Processing Self-healing hydrogels General Materials Science Electrical and Electronic Engineering 0210 nano-technology business Long chain Photoinitiator Civil and Structural Engineering |
| Zdroj: | Smart Materials and Structures. 28:095016 |
| ISSN: | 1361-665X 0964-1726 |
| DOI: | 10.1088/1361-665x/ab325d |
| Popis: | 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 J/malt;supagt;2alt;/supagt; to 40 J/malt;supagt;2alt;/supagt; 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. |
| Databáze: | OpenAIRE |
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