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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Transfer of Graphene CVD to Surface of Low Density Polyethylene (LDPE) and Poly(butylene adipate-co-terephthalate) (PBAT) Films: Effect on Biodegradation Process

Texto completo
Autor(es):
Maldonado, Luiz F. [1] ; Munoz, Pablo A. R. [1] ; Fechine, Guilhermino J. M. [1]
Número total de Autores: 3
Afiliação do(s) autor(es):
[1] Univ Prebiteriana Mackenzie, MackGraphe Graphene & Nanomat Res Ctr, Rua Consolacao 896, BR-01302907 Sao Paulo, SP - Brazil
Número total de Afiliações: 1
Tipo de documento: Artigo Científico
Fonte: JOURNAL OF POLYMERS AND THE ENVIRONMENT; v. 26, n. 8, p. 3187-3196, AUG 2018.
Citações Web of Science: 0
Resumo

Here, the influence of graphene as a coating on the biodegradation process for two different polymers is investigated, poly(butylene adipate-co-terephthalate) (PBAT) (biodegradable) and low-density polyethylene (LDPE) (non-biodegradable). Chemical vapor deposition graphene was transferred to the surface of two types of polymers using the Direct Dry Transfer technique. Polymer films, coated and uncoated with graphene, were buried in a maturated soil for up to 180 days. The films were analyzed before and after exposure to microorganisms in order to obtain information about the integrity of the graphene (Raman Spectroscopy), the biodegradation mechanism of the polymer (molecular weight and loss of weight), and surface changes of the films (atomic force microscopy and contact angle). The results prove that the graphene coating acted as a material to control the biodegradation process the PBAT underwent, while the LDPE covered by graphene only had changes in the surface properties of the film due to the accumulation of solid particles. Polymer films coated with graphene may allow the production of a material that can control the microbiological degradation, opening new possibilities in biodegradable polymer packaging. Regarding the possibility of graphene functionalization, the coating can also be selective for specific microorganisms attached to the surface. (AU)

Processo FAPESP: 14/22840-3 - Transferência direta a seco de grafeno-CVD para substratos poliméricos bidimensionais e tridimensionais
Beneficiário:Guilhermino José Macêdo Fechine
Linha de fomento: Auxílio à Pesquisa - Regular
Processo FAPESP: 12/50259-8 - Grafeno: fotônica e opto-eletrônica: colaboração UPM-NUS
Beneficiário:Antônio Hélio de Castro Neto
Linha de fomento: Auxílio à Pesquisa - Programa SPEC
Processo FAPESP: 15/16591-3 - Geração de pulsos ultracurtos em lasers Raman com modos acoplados por absorvedores saturáveis de grafeno
Beneficiário:Pablo Andrés Riveros Muñoz
Linha de fomento: Bolsas no Brasil - Pós-Doutorado