Preparation and Structural Characterization of New Photopolymerizable Transparent Aluminum-Phosphate Hybrid Materials as Resins for 3D Printing
| Autor: | Younes Messaddeq, Gabriel Toshiaki Tayama, Silvia H. Santagneli, Shane Pawsey, Hellmut Eckert |
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| Přispěvatelé: | Universidade Estadual Paulista (Unesp), Universidade de São Paulo (USP), Bruker BioSpin Corporation, Universite Laval |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Materials science
business.industry 3D printing 7. Clean energy ESPECTROSCOPIA Silicate Surfaces Coatings and Films Electronic Optical and Magnetic Materials Characterization (materials science) law.invention chemistry.chemical_compound General Energy Chemical engineering chemistry 13. Climate action law Physical and Theoretical Chemistry business Hybrid material ALUMINUM PHOSPHATE Stereolithography |
| Zdroj: | Scopus Repositório Institucional da UNESP Universidade Estadual Paulista (UNESP) instacron:UNESP Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual) Universidade de São Paulo (USP) instacron:USP |
| Popis: | Made available in DSpace on 2021-06-25T11:07:45Z (GMT). No. of bitstreams: 0 Previous issue date: 2020-11-19 The use of a hybrid sol-gel route to prepare silicate hybrid materials and glasses through stereolithography and other photopolymerizable based additive manufacturing techniques has become a major topic. In this work, we present a new synthesis of 2-hydroxyethyl methacrylate/aluminum-phosphate hybrid materials with potential use on additive manufacturing through stereolithography (SLA). The unique sol-gel chemistry of phosphates and their strong reactivity toward metal alkoxide precursors pose special challenges toward stable sols with low solvent concentration. Here, we were able to control condensation reactions, avoiding precipitation, yielding clear and long shelf-life stable 2-hydroxyethyl methacrylate/aluminum-phosphate hybrid sols with different Al/(Al + P) ratios (from 0% up to 50%), which can be further photopolymerized, yielding transparent crack-free monolithic materials. A detailed structural study through multinuclear solid-state NMR and infrared spectroscopies showed a high polymerization degree with inorganic Aly(PO4)x-like fragments acting as cross-linkers. These cross-linked structures are sensitive to the Al/(Al + P) ratio, and an increasing aluminum concentration results in a higher degree of inorganic condensation. The organic-inorganic structures are highly interconnected resulting in homogeneous materials. Chemistry Institute São Paulo State University UNESP, Rua Francisco Degni 55 São Carlos Institute of Physics University of São Paulo - USP, Avenida Trabalhardor Saocarlense 400 Bruker BioSpin Corporation, 15 Fortune Drive Centre de Optique Photonique et Laser-COPL Universite Laval, 2375 rue de la Terrase Chemistry Institute São Paulo State University UNESP, Rua Francisco Degni 55 |
| Databáze: | OpenAIRE |
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