| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advanced Functional and Structural Thin Films and Coatings
|
| Presentation Title |
Forming Limits and Shaping of Ti-PMMA-Ti Sandwiches for Biomedical Applications |
| Author(s) |
Gargi Shankar Nayak, Heinz Palkowski |
| On-Site Speaker (Planned) |
Gargi Shankar Nayak |
| Abstract Scope |
Biocompatible sandwiches seem to be a viable option to overcome the “stress-shielding” problem between bone and implant. For developing such sandwiches, a processing route has been developed, starting with grafting of PMMA on Ti sheets. Grafting resulted in (optically) different zones on Ti sheets. Semi-finished Ti/PMMA/Ti sandwiches were prepared by hot pressing. The interpenetration between the grafted PMMA chains and PMMA sheet provided the necessary bonding strength. Comparable adhesion strengths were found for sandwiches for all the different grafted zones, suggesting a successful grafting of PMMA on large-scaled Ti sheets. The formability of (brittle at room temperature) PMMA was investigated by uniaxial, bending, and deep drawing tests under elevated temperatures, defining the ideal temperature for shaping the sandwiches to be just below the Tg of PMMA, where PMMA has sufficient plasticity with a low risk of delamination. The forming limits and conditions for such sandwiches will be introduced. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Biomaterials, Composites, Surface Modification and Coatings |