Data/hora: 01/06/2024 08:09:20

Provedor de dados: | 5
País: | France
Título: | Natural Degradation and Biodegradation of Poly(3-Hydroxybutyrate-co-3-Hydroxyvalerate) in Liquid and Solid Marine Environments
Autores: | Deroine, Morgan; Cesar, Guy; Le Duigou, Antoine; Davies, Peter; Bruzaud, Stephane.
Data: | 2015-12
Ano: | 2015
Palavras-chave: | PHBV; Natural ageing; Degradation; Biodegradation; Seawater.
Resumo: | In this study, natural degradation and biodegradation of poly(3-hydroxybuyrate-co-3-hydroxyvalerate) (PHBV) films were followed in different marine environments. First of all, ageing of PHBV films was investigated in natural seawater for 180 days and degradation was followed by means of weight loss measurements, scanning electron microscopy (SEM), differential scanning calorimetry and steric exclusion chromatography. In a second part, biodegradation tests were performed on PHBV powder, by following carbon dioxide (CO2) release(,) to highlight the PHBV bioassimilation of marine microorganisms. Three different marine environments were considered for biodegradation tests: a solid inoculum with foreshore sand, a solid-liquid inoculum with sand and seawater and a liquid inoculum with seawater. In the latter, a biofilm was added to study the influence of microorganisms on biodegradation kinetics. The films aged under natural conditions show a large loss of weight after 180 days in immersion, around 36 %, confirmed by SEM pictures which show an increase of the surface erosion and a decrease of the sample thickness. Microorganisms' attack occurred as suggested by CO2 release during biodegradation tests, whatever the environment studied.
Tipo: | Text
Idioma: | Inglês

Identificador:

http://archimer.ifremer.fr/doc/00296/40735/42020.pdf

DOI:10.1007/s10924-015-0736-5

http://archimer.ifremer.fr/doc/00296/40735/

Editor: | Springer/plenum Publishers
Formato: | application/pdf
Fonte: | Journal Of Polymers And The Environment (1566-2543) (Springer/plenum Publishers), 2015-12 , Vol. 23 , N. 4 , P. 493-505

Fonte:

Springer Science+Business Media New York 2015

info:eu-repo/semantics/openAccess

restricted use