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Curing of urethane dimetracrylate composites: A glass transition study

Article dans une revue avec comité de lecture
Auteur
NGUYEN, Jean-François
300372 Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL [ENSCP]
POMES, Benjamin
SADOUN, Michaël
331668 SPRL
ccRICHAUD, Emmanuel
86289 Laboratoire Procédés et Ingénierie en Mécanique et Matériaux [PIMM]

URI
http://hdl.handle.net/10985/19487
DOI
10.1016/j.polymertesting.2019.106113
Date
2019
Journal
Polymer Testing

Résumé

Urethane dimethacrylate thermosets (UDMA) and their composites (PICN) were cured under varying polymerization pressures (1–3500 bars) and the resulting materials were characterized mainly by dynamic mechanical analysis (DMA) to measure their glass transition. In the case of PICN, glass transition displays an optimum in the middle pressure range (1000–2000 bars), which is linked to the conversion degree of polymerization process as measured by near infrared (NIR) spectrometry whereas it displays hyperbolic increase for UDMA networks. The results were discussed using classical theories used for describing the glass transition of networks. For samples post-cured at 160 °C during 1 h, the glass transition of undercured samples (1–1000 bars and P > 3000 bars) is shown to increase in link with possible post-curing. Reversely, the Tg of the most cured samples (polymerization pressure about 2000 bars) decreases which was attributed to the possible thermal decomposition. The glass transition temperature is here tentatively proposed a marker of the network architecture for samples varying by their processing (curing, post-curing) conditions and possibly their degradation level.

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Documents liés

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  • Water ageing of urethane dimethacrylate networks 
    Article dans une revue avec comité de lecture
    POMES, Benjamin; DERUE, Isabelle; LUCAS, Albert; NGUYEN, Jean-François; ccRICHAUD, Emmanuel (Elsevier, 2018)
    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 ...
  • Polymethacrylates.Material Selection For Medical Applications:Requirements For Several Kinds of Medical Applications 
    Chapitre d'ouvrage scientifique
    POMES, Benjamin; NGUYEN, Jean-François; ccRICHAUD, Emmanuel (Elsevier, 2019)
    This chapter reviews several cases of methacrylate-based polymers used for medical applications. The main chemicals and fillers used for elaborating biomaterials are presented, together with the main synthesis reactions. ...
  • Influence of polymerization pressure and post-cure treatment on conversion degree and viscoelastic properties of polymer infiltrated ceramic network 
    Article dans une revue avec comité de lecture
    POMÈS, Benjamin; BEHIN, Pascal; JORDAN, Laurence; LEGOFF, Stéphane; STOCLET, Gregory; NGUYEN, Jean-François; ccRICHAUD, Emmanuel (Elsevier, 2021)
    This study aimed at determining an optimum polymerization pressure for Polymer Infiltrated Ceramic Network (PICN) blocks by characterizing the conversion degree (DC) and the viscoelastic properties of experimental PICN ...
  • Femtosecond laser polishing of pure copper surfaces with perpendicular incidence 
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    ccLOUBÈRE, Emmanuel; ccKRAIEM, Nada; MAO, Aofei; ccPREAUD, Sebastien; ccKUSIAK, Andrzej; ccVEILLERE, Amelie; ccSILVAIN, Jean-Francois; ccLU, Yongfeng (2025)
    Over the past few years, femtosecond (fs) laser processing has drawn a growing interest in a wide range of applications as it offers the possibility to process the surface morphologies of metals and semiconductors. In ...
  • Review : Auto-oxidation of aliphatic polyamides 
    Article dans une revue avec comité de lecture
    OKAMBA-DIOGO, Octavie; VERDU, Jacques; GUILMENT, Jean; FERNAGUT, François; ccFAYOLLE, Bruno; ccRICHAUD, Emmanuel (Elsevier, 2013)
    The literature on oxidation kinetics of polyamides and model compounds has been reviewed in order to try to extract suitable information for non-empirical kinetic modeling. Polyamide characteristics are systematically ...

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