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Graphene oxide-reinforced poly(2-hydroxyethyl methacrylate) hydrogels with extreme stiffness and high-strength
- Source :
- Composites Science and Technology. 184:107819
- Publication Year :
- 2019
- Publisher :
- Elsevier BV, 2019.
-
Abstract
- Designing hydrogels with high-strength and stiffness remains a challenge, limiting their usage in several applications that involve load-bearing. In this work, in situ incorporation of different amounts of graphene oxide (GO) into poly(2-hydroxyethyl methacrylate) (pHEMA) was used to create hydrogels with outstanding stiffness (Young's modulus of up to 6.5 MPa, 8.3x higher than neat pHEMA) and tensile resistance (ultimate tensile strength of up to 1.14 MPa, 7.4x higher than neat pHEMA) without affecting the water absorption capacity, surface wettability and cytocompatibility of pHEMA. Such magnitude of improvement in Young's modulus and ultimate tensile strength was never before described for GO incorporation in hydrogels. Moreover, these stiffness and tensile resistance values are higher than the ones of most hydrogels (few hundred kPa), achieving a stiffness comparable to polydimethylsiloxane (PDMS), cartilage and artery walls and a tensile resistance similar to rigid foams, PDMS and cork. These new materials open a wide range of applications for pHEMA in different fields.
- Subjects :
- Absorption of water
Materials science
Polydimethylsiloxane
Graphene
General Engineering
Modulus
Stiffness
02 engineering and technology
010402 general chemistry
021001 nanoscience & nanotechnology
Methacrylate
01 natural sciences
0104 chemical sciences
law.invention
chemistry.chemical_compound
chemistry
law
Self-healing hydrogels
Ultimate tensile strength
Ceramics and Composites
medicine
Composite material
medicine.symptom
0210 nano-technology
Subjects
Details
- ISSN :
- 02663538
- Volume :
- 184
- Database :
- OpenAIRE
- Journal :
- Composites Science and Technology
- Accession number :
- edsair.doi...........b8fffa5d178883054b5bb7e69cb8310d