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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

The role of physical structure and morphology on the photodegradation behaviour of polypropylene-graphene oxide nanocomposites

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Author(s):
de Oliveira, Yuri D. C. [1] ; Amurin, Leice G. [1] ; Valim, Fernanda C. F. [1] ; Fechine, Guilhermino J. M. [1] ; Andrade, Ricardo J. E. [1]
Total Authors: 5
Affiliation:
[1] Univ Prebiteriana Mackenzie, Graphene & Nanomat Res Ctr, MackGraphe, Sao Paulo - Brazil
Total Affiliations: 1
Document type: Journal article
Source: Polymer; v. 176, p. 146-158, AUG 2 2019.
Web of Science Citations: 1
Abstract

In 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. (AU)

FAPESP's process: 16/12400-1 - Manufacturing and characterization of polypropylene/graphene oxide nanocomposites
Grantee:Yuri Durighetto Coelho de Oliveira
Support Opportunities: Scholarships in Brazil - Scientific Initiation
FAPESP's process: 17/07244-3 - Graphene-based polymer nanocomposites for application in optical communications
Grantee:Leice Gonçalves Amurin
Support Opportunities: Scholarships in Brazil - Post-Doctoral
FAPESP's process: 14/22840-3 - Direct dry transfer of CVD graphene to 2D and 3D polymeric substrates
Grantee:Guilhermino José Macêdo Fechine
Support Opportunities: Regular Research Grants
FAPESP's process: 12/50259-8 - Graphene: photonics and opto-electronics: UPM-NUS collaboration
Grantee:Antonio Helio de Castro Neto
Support Opportunities: Research Projects - SPEC Program