Epoxy resin-based ultrafine dry powder coatings for implants
| Autor: | Hiran Perinpanayagam, Hui Zhang, Jesse Zhu, Nicholas Y. Hou |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Materials science
Polymers and Plastics Biocompatibility chemistry.chemical_element Nanoparticle 02 engineering and technology engineering.material 03 medical and health sciences 0302 clinical medicine Coating Materials Chemistry Composite material chemistry.chemical_classification 030206 dentistry General Chemistry Epoxy Polymer 021001 nanoscience & nanotechnology Surfaces Coatings and Films Polyester chemistry visual_art visual_art.visual_art_medium engineering Particle size 0210 nano-technology Titanium |
| Zdroj: | Journal of Applied Polymer Science. 133 |
| ISSN: | 0021-8995 |
| Popis: | Ultrafine dry powder coating technology creates biocompatible polymeric coatings for implants. Nanoparticles (nTiO2) modify flow to prevent agglomeration and create homogenous coatings. Since polyester-based coatings require the potentially harmful 1,3,5-triglycidyl isocyanurate (TGIC) curing agent, this study's objective was to develop alternative TGIC-free formulations. Epoxy and epoxy/polyester (1:1) hybrid mixtures were enriched with CaO (5% w/w) and nTiO2 (0.5% w/w), as functional additives and flow modifiers, respectively. Epoxy-TiO2 and Hybrid-TiO2 mixtures were prepared with micron-sized TiO2 (25% w/w) to enhance biocompatibility. Polymer chips and additives were combined in a high-shear mixer and passed through a sieve (35 µm) to yield ultrafine particles that were sprayed (20 kV) onto metal sheets and cured (200 °C). Particle size analyses showed that all formulations were ultrafine (D 0.5 |
| Databáze: | OpenAIRE |
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