Water ageing of urethane dimethacrylate networks

Autor: Isabelle Derue, Emmanuel Richaud, Albert Lucas, Jean-François Nguyen, Benjamin Pomes
Přispěvatelé: Université Paris Diderot - Paris 7 - UFR Odontologie (UPD7 Odontologie), Université Paris Diderot - Paris 7 (UPD7), Laboratoire Procédés et Ingénierie en Mécanique et Matériaux (PIMM), Conservatoire National des Arts et Métiers [CNAM] (CNAM)-Arts et Métiers Sciences et Technologies, HESAM Université (HESAM)-HESAM Université (HESAM), UFR Odontologie [UPD7], Procédés et Ingénierie en Mécanique et Matériaux [Paris] (PIMM), Conservatoire National des Arts et Métiers [CNAM] (CNAM)-École Nationale Supérieure d'Arts et Métiers (ENSAM), Arts et Métiers Sciences et Technologies, HESAM Université (HESAM)-HESAM Université (HESAM)-Arts et Métiers Sciences et Technologies, HESAM Université (HESAM)-HESAM Université (HESAM)-Centre National de la Recherche Scientifique (CNRS)
Rok vydání: 2018
Předmět:
Work (thermodynamics)
Matériaux [Sciences de l'ingénieur]
Materials science
Polymers and Plastics
Diffusion
Polymères [Chimie]
macromolecular substances
02 engineering and technology
Degree of polymerization
[SPI.MAT]Engineering Sciences [physics]/Materials
03 medical and health sciences
0302 clinical medicine
Materials Chemistry
Elastic modulus
chemistry.chemical_classification
Mécanique [Sciences de l'ingénieur]
technology
industry
and agriculture
030206 dentistry
Polymer
[SPI.MECA]Engineering Sciences [physics]/Mechanics [physics.med-ph]
021001 nanoscience & nanotechnology
Condensed Matter Physics
UDMA
Water aging
[CHIM.POLY]Chemical Sciences/Polymers
Chemical engineering
Polymerization
chemistry
Urethane dimethacrylate (UDMA)
Mechanics of Materials
Dynamic vapor sorption
0210 nano-technology
Zdroj: Polymer Degradation and Stability
Polymer Degradation and Stability, Elsevier, 2018, 154, pp.195-202. ⟨10.1016/j.polymdegradstab.2018.06.003⟩
ISSN: 0141-3910
1873-2321
DOI: 10.1016/j.polymdegradstab.2018.06.003
Popis: International audience; This work explores the process of water ageing of high-temperature high-pressure polymerized urethane dimethacrylate (UDMA) networks. UDMA samples polymerized under several pressures (0.1–300 MPa) and differing by the conversion degree of polymerization were aged in water at 37, 50 and 70 °C and followed by gravimetry. Diffusion was observed to obey Fick's law. The diffusion coefficient and water maximal uptake were observed to be almost independent of polymerization pressure, consistently with analysis of Dynamic Vapor Sorption data suggesting that external polymerization pressure has no effect on polymer affinity with water. This was ascribed to the fact that all materials have the same cohesive energy, as confirmed by ultrasonic measurements of elastic moduli. Polymerization pressure (used to improve conversion degree and mechanical properties) would thus have a minor influence on water ageing that is mainly triggered by polymer chemistry. When elevating the polymerization pressure, there is hence no compromise between the optimization of thermo-mechanical properties and the resistance to water ageing.
Databáze: OpenAIRE
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