The role of physical structure and morphology on the photodegradation behaviour of polypropylene-graphene oxide nanocomposites
Tipo
Artigo
Data de publicação
2019
Periódico
Polymer
Citações (Scopus)
28
Autores
de Oliveira Y.D.C.
Amurin L.G.
Valim F.C.F.
Fechine G.J.M.
Andrade R.J.E.
Amurin L.G.
Valim F.C.F.
Fechine G.J.M.
Andrade R.J.E.
Orientador
Título da Revista
ISSN da Revista
Título de Volume
Membros da banca
Programa
Resumo
© 2019 Elsevier LtdIn this work, for the first time, the effect of graphene oxide on the photodegradation behaviour of polypropylene-graphene oxide nanocomposites is presented. The graphene oxide was characterised, and AFM images show that the GO can be classified as multilayer-GO (mGO). Based on previous work, two new methods were used, liquid-phase feeding (LPF) and solid-solid deposition (SSD), to insert pre-exfoliated mGO into the polymer matrix. Moreover, the morphology and structure of the nanocomposites were analysed using an optical microscope, rheological and dynamic mechanical analysis, x-ray diffraction, and differential scanning calorimetry. The results show that stacked layers are obtained, especially for the SSD method, since it decreases the nanocomposites viscosity, mostly due to the self-lubricity of mGO layers. Finally, the photodegradation behaviour was investigated and revealed that mGO plays an important role, with a factor of three increase regarding photodegradation resistance, when compared to pure polypropylene.
Descrição
Palavras-chave
Assuntos Scopus
AFM image , Graphene oxide nanocomposites , Liquid Phase , Morphology and structures , Physical structures , Solid-solid , Stacked layer