About this Abstract |
Meeting |
2025 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2025)
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Symposium
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2025 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2025)
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Presentation Title |
Characterization of the Self-Healing Properties of Additively Manufactured PLA Polymer Blends |
Author(s) |
Stephanie Moreno, Katia Lizbeth Delgado Ramos, Osvaldo Bustamante, David A. Roberson |
On-Site Speaker (Planned) |
Stephanie Moreno |
Abstract Scope |
As elucidation of the negative impacts of polymeric waste continues to grow, the need for a solution is paramount. Considering that worldwide, recycled plastics account for only 9% of the waste stream, a robust solution is needed. We believe that implementation of polymeric materials with self-healing capabilities that enable facile repair of damaged polymeric components that would otherwise be thrown away is a mitigation strategy. The work here examines the effects of aspects related to additive manufacturing such as print raster pattern on the self-healing capability of PLA-based blends. Specimens fabricated by fused filament fabrication (FFF), fused pellet fabrication (FPF) and injection molding. Two distinct categories of self-healing materials are explored: 1) self-healing mechanisms driven by shape memory properties; and 2) self-healing mechanisms driven by a water-soluble additive. Materials characterization techniques such as scanning electron microscopy, dynamic mechanical analysis, and Fourier-transform infrared spectroscopy were also performed. |
Proceedings Inclusion? |
Planned: Post-meeting proceedings |