Please use this identifier to cite or link to this item:
http://hdl.handle.net/10397/82140
| Title: | Isocyanate modified GO shape-memory polyurethane composite | Authors: | Zhang, Y Hu, J |
Issue Date: | 2020 | Source: | Polymers, 2020, v. 12, no. 1, 118 | Abstract: | Shape-memory composites have benefits for minimally invasive surgery, but their wider applications for bone repair are hindered by conflicts between the mechanical and memory performances, especially at load-bearing locations. In this study, we fabricated a graphene oxide shape-memory polyurethane composite through the chemical combination of graphene oxide and isocyanate, in order to realize satisfactory mechanical and shape-memory effects. As desired, a modulus of ~339 MPa and a shape recovery ratio of 98% were achieved, respectively, in the composite. In addition, finite element analysis demonstrated that, after being implanted in a defective bone through a minimally invasive treatment, where the highest stress was distributed at the implant-bone interface, this composite could offer a generated force during the recovery process. Furthermore, we also discuss the origins of the improved mechanical and memory properties of the composites, which arise from increased net-points and the stable molecular structure inside. Therefore, with its superior structure and properties, we envision that this shape-memory composite can provide new insights toward the practical application of shape-memory polymers and composites in the field of bone repair. | Keywords: | Bone repair Graphene oxide Mechanical and memory properties Shape-memory composite |
Publisher: | Molecular Diversity Preservation International (MDPI) | Journal: | Polymers | ISSN: | 2073-4360 | DOI: | 10.3390/polym12010118 | Rights: | © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). The following publication Zhang Y, Hu J. Isocyanate Modified GO Shape-Memory Polyurethane Composite. Polymers. 2020; 12(1):118, is available at https://doi.org/10.3390/polym12010118 |
| Appears in Collections: | Journal/Magazine Article |
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| File | Description | Size | Format | |
|---|---|---|---|---|
| Zhang_Isocyanate_modified_GO.pdf | 6.88 MB | Adobe PDF | View/Open |
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