Laboratoire Charles Coulomb UMR 5221 CNRS/UM2 (L2C)

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Photo de FABRE Pascale
FABRE Pascale      
Fonction : Chercheur CNRS
Organisme : CNRS
Directeur de Recherche
Autre(s) thème(s) de recherche ou rattachement(s) :
 - Matière molle pour l’agronomie et l’environnement
pascale.fabre_AT_umontpellier.fr
Bureau: 118, Etg: 1, Bât: 11 - Site : Campus Triolet

Administration Nationale:
  • Expert MSTP/AERES
Administration Locale:
  • Membre d'un pool d'experts
Activités de Recherche:     
Biodégradation des polymères en milieu marin
Pollution of the ocean by plastic litter has become a major environmental problem in recent years. One of the reasons of the increasing pollution by conventional plastics is their extreme durability, initially considered as an advantage, but which leads to their undesirable accumulation in terrestrial and marine environments, whether as such or in the form of micro-plastics. This environmental concern thrives with an increasing demand from consumers for non-conventional plastics. Bio-sourced plastics is one of the major direction undertaken to produce more eco-friendly plastics, while keeping their use properties unchanged, but this alternative has not proven satisfactory yet. Moreover, even though the main degradation mechanisms have been identified (UV, waves, enzymes, bacteria), the degree to which “biodegradable” plastics actually biodegrade in the marine environment is still under debate.
Our research has two major axis :
-to deliver a comprehensive understanding of degradation mechanisms of polymers in marine environment in relation to their structure at different scales in order to lay down the basis for a generic model for the fate of plastics in the ocean (fragmentation versus biodegradation)
-to draw new directions towards the design of innovative eco-friendly polymers
In order to study degradation at the local scale of bacteria, we use atomic force microscopy (AFM) and measure both topographical and mechanical changes induced by the presence of the different degrading factors.
New concepts for eco-friendly materials are based on the synthesis of original block-copolymers.
Projets de Recherche:
Etude de la biodégradation de polymères en milieu marin par microscopie à force atomique : rôle des hétérogénéités de taille contrôlée à l’échelle de la bactérie (Labex NUMEV 2016-2017 et AAP Institut de Physique Emergence 2016)
Programme de Recherche/CV:
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Domaines de Recherche:
  • Physique/Matière Condensée/Science des matériaux
  • Sciences de l'environnement/Environnement et Société
Dernieres productions scientifiques :
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+ Microstructure Characterization of Oceanic Polyethylene Debris doi link

Auteur(s): Rowenczyk Laura, Dazzi Alexandre, Deniset-Besseau Ariane, Beltran Victoria, Goudounèche Dominique, Wong-wah-chung Pascal, Boyron Olivier, George M., Fabre P., Roux C., Mingotaud Anne Françoise, Halle Alexandra ter

(Article) Publié: Environmental Science Technology, vol. 54 p.4102-4109 (2020)

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+ Erosion et fragmentation de polymères semi-cristallins. Relargage de microparticules dans l'océan. hal link

Auteur(s): George M.(Corresp.), Gaillard T., Nallet Frédéric, Gastaldi Emmanuelle, Fabre P.

Conference: Premières rencontres nationales du GDR Polymères et Océans (Créteil, FR, 2019-06-24)

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+ Fate of polymers in the environment : mechanisms and kinetics of degradation hal link

Auteur(s): Fabre P.(Corresp.), Gaillard T., Nallet Frédéric, Salomez Mélanie, Gastaldi Emmanuelle, George M.

Conférence invité: Colloque franco-américain sur les plastiques (Le Mans, FR, 2019-12-12)

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. Erosion and fragmentation of semi-crystalline polymers. Release of micro-plastics in the ocean.

Auteur(s): George M., Gaillard T., Nallet Frédéric, Salomez Mélanie, Gastaldi Emmanuelle, Fabre P.

(Séminaires) IMMM (Le Mans, FR), 2019-05-21

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+ A geometric model for the erosion and fragmentation of polymers in the ocean hal link

Auteur(s): Fabre P.(Corresp.), Gaillard T., Nallet Frédéric, Salomez Mélanie, Gastaldi Emmanuelle, George M.

Conference: 5TH INTERNATIONAL SOFT MATTER CONFERENCE (ISMC2019) (Edinburgh, GB, 2019-06-03)

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