Water ageing of urethane dimethacrylate networks - Archive ouverte HAL Access content directly
Journal Articles Polymer Degradation and Stability Year : 2018

Water ageing of urethane dimethacrylate networks

Abstract

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.
Fichier principal
Vignette du fichier
PIMM - PDS - POMES - 2018.pdf (572.69 Ko) Télécharger le fichier
Origin : Files produced by the author(s)
Loading...

Dates and versions

hal-01825761 , version 1 (28-06-2018)

Identifiers

Cite

Benjamin Pomes, Isabelle Derue, Albert Lucas, Jean-François Nguyen, Emmanuel Richaud. Water ageing of urethane dimethacrylate networks. Polymer Degradation and Stability, 2018, 154, pp.195-202. ⟨10.1016/j.polymdegradstab.2018.06.003⟩. ⟨hal-01825761⟩
47 View
205 Download

Altmetric

Share

Gmail Facebook X LinkedIn More