G
Guy César
Researcher at University of Southern Brittany
Publications - 21
Citations - 1129
Guy César is an academic researcher from University of Southern Brittany. The author has contributed to research in topics: Biodegradation & Microplastics. The author has an hindex of 15, co-authored 20 publications receiving 751 citations.
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Journal ArticleDOI
Accelerated ageing of polylactide in aqueous environments: Comparative study between distilled water and seawater
Morgan Deroiné,Antoine Le Duigou,Yves-Marie Corre,Pierre-Yves Le Gac,Peter Davies,Guy César,Stéphane Bruzaud +6 more
TL;DR: In this article, a baseline on degradation mechanism and degradation kinetics for lifetime prediction of polylactide (PLA) in a marine environment was established, where samples were immersed in distilled water for six months at different temperatures (25, 30, 40 and 50°C).
Journal ArticleDOI
Performance and environmental impact of biodegradable polymers as agricultural mulching films
François Touchaleaume,L. Martín-Closas,Hélène Angellier-Coussy,Anne Chevillard,Guy César,Nathalie Gontard,Emmanuelle Gastaldi +6 more
TL;DR: Taking into account their mulching efficiency and biodegradability, the four PBAT-based studied materials are proven to constitute suitable alternatives to the excessively resistant PE material.
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Threat of plastic ageing in marine environment. Adsorption/desorption of micropollutants
Mikaël Kedzierski,Mélanie D'Almeida,Anthony Magueresse,Adélaïde Le Grand,Hélène Duval,Guy César,Olivier Sire,Stéphane Bruzaud,Véronique Le Tilly +8 more
TL;DR: It is reported, for the first time, that some aged plastics, without being cytotoxic, can release estrogenic compounds in marine environment.
Journal ArticleDOI
Degradation of Polyethylene Designed for Agricultural Purposes
Pierre Feuilloley,Guy César,Ludovic Benguigui,Yves Grohens,Isabelle Pillin,Hilaire Bewa,Sandra Lefaux,Mounia Jamal +7 more
TL;DR: In this article, three commercial mulch films have been submitted to standardised biodegradation tests and the results are discussed, and the first conclusions are that a very low degree of biodegradability of the commercial PE films is achieved from these tests and that crosslinked PE micro-fragments are found in soil after a very long period of time.
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Natural Degradation and Biodegradation of Poly(3-Hydroxybutyrate-co-3-Hydroxyvalerate) in Liquid and Solid Marine Environments
TL;DR: In this article, the degradation and biodegradation of poly(3-hydroxybuyrate-co-3hydroxyvalerate) (PHBV) films were followed in different marine environments.