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Photodegradation and photostabilization of polymer nanocomposites based on two-dimensional fillers

Abstract

This project aims to explore the excellent properties of graphene and other two - dimensional materials (graphene oxide - GO, reduced graphene oxide - rGO, molybdenum disulfide- MoS2 and hexagonal boron nitride - hBN) to produce polymer nanocomposites that meet the needs of the different areas of application (filaments, films and injected pieces). In addition to the production and characterization of nanocomposites, this project has as its main focus the study of the mechanisms of degradation and stabilization of these materials, something that until now has not been explored. The degradation / stabilization study will focus on the correct choice of processing additives and protectors against UV radiation. The choice of the polymer matrices was correlated with these areas, such as: polypropylene - PP, low density polyethylene - LDPE and poly (butylene adipate-co-terephthalate) - PBAT for films and injected pieces, and poly(ethylene terephthalate) - PET for filaments. The project comprises two steps: (1) Production and characterization of polymeric nanocomposites based on two-dimensional materials; (2) Study of stabilization of polymeric nanocomposites based on two-dimensional materials. The success of this project depends fundamentally on the production of two-dimensional materials and the strategies of insertion of these materials into the polymer matrices. In order to reach the goals of this project, a multidisciplinary team of researchers was set up with researchers from Graphene and Nano-Material Research Center - MackGraphe, and national (Institute of Macromolecules - IMA/UFRJ) and international collaborations (Case Western Reserve University - USA). (AU)

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Scientific publications (12)
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
GARCIA, PAMELA S.; OLIVEIRA, YURI D. C.; VALIM, FERNANDA C. F.; KOTSILKOVA, RUMIANA; IVANOV, EVGENI; DONATO, RICARDO K.; FECHINE, GUILHERMINO J. M.; ANDRADE, RICARDO J. E. Tailoring the graphene oxide chemical structure and morphology as a key to polypropylene nanocomposite performance. Polymer Composites, SEP 2021. Web of Science Citations: 0.
DESSI, CLAUDIA; AMURIN, LEICE G.; MUNOZ, PABLO A. R.; DE OLIVEIRA, YURI D. C.; FECHINE, GUILHERMINO J. M.; ANDRADE, RICARDO J. E. Graphene oxide dispersion state in polystyrene-based composites below percolation threshold via linear melt rheology. RHEOLOGICA ACTA, v. 60, n. 4, p. 209-218, APR 2021. Web of Science Citations: 0.
FERREIRA, EDER H. C.; FECHINE, GUILHERMINO J. M. High abrasive wear resistance polyethylene blends: an adapted Ratner-Lancaster correlation. POLYMER BULLETIN, APR 2021. Web of Science Citations: 0.
RODRIGUEZ, CAMILA L. C.; NUNES, MARIO A. B. S.; GARCIA, PAMELA S.; FECHINE, GUILHERMINO J. M. Molybdenum disulfide as a filler for a polymeric matrix at an ultralow content: Polystyrene case. Polymer Testing, v. 93, JAN 2021. Web of Science Citations: 0.
MAESTRELLI, L. M. D.; OYAMA, H. T. T.; MUNOZ, P. A. R.; CESTARI, I. A.; FECHINE, G. J. M. Role of Graphene Oxide on the Mechanical Behaviour of Polycarbonate-Urethane/Graphene Oxide Composites. MATERIALS RESEARCH-IBERO-AMERICAN JOURNAL OF MATERIALS, v. 24, n. 3 2021. Web of Science Citations: 0.
NUNES, MARIO A. B. S.; DE MATOS, BRUNO R.; SILVA, GLAURA G.; ITO, EDSON N.; DE MELO, TOMAS J. A.; FECHINE, GUILHERMINO J. M. Hybrids nanocomposites based on a polymer blend (linear low-density polyethylene/poly(ethylene-co-methyl acrylate) and carbonaceous fillers (graphene and carbon nanotube). Polymer Composites, v. 42, n. 2 OCT 2020. Web of Science Citations: 0.
PINTO, GABRIEL M.; SILVA, GIOVANNA DA C.; FECHINE, GUILHERMINO J. M. Effect of exfoliation medium on the morphology of multi-layer graphene oxide and its importance for Poly(Ethylene terephthalate) based nanocomposites. Polymer Testing, v. 90, OCT 2020. Web of Science Citations: 1.
PINTO, GABRIEL M.; SILVA, GIOVANNA DA C.; SANTILLO, CHIARA; LAVORGNA, MARINO; MAIA, JOAO M.; FECHINE, GUILHERMINO J. M. Crystallization kinetics, structure, and rheological behavior of poly(ethylene terephthalate)/multilayer graphene oxide nanocomposites. POLYMER ENGINEERING AND SCIENCE, v. 60, n. 11 AUG 2020. Web of Science Citations: 0.
FERREIRA, EDER H. C.; LIMA, LUCAS P.; FECHINE, GUILHERMINO J. M. The ``Superlubricity State{''} of Carbonaceous Fillers on Polymer Composites. MACROMOLECULAR CHEMISTRY AND PHYSICS, v. 221, n. 16 JUL 2020. Web of Science Citations: 0.
FERREIRA, EDER H. C.; FECHINE, GUILHERMINO J. M. Healing phenomenon adapted to understand the miscibility of polymer blends: An approach based on the deformation mechanism. Journal of Applied Polymer Science, v. 137, n. 38 JUN 2020. Web of Science Citations: 1.
RODRIGUEZ, CAMILA L. C.; MUNOZ, PABLO A. R.; DONATO, KATARZYNA Z.; SEIXAS, LEANDRO; DONATO, RICARDO K.; FECHINE, GUILHERMINO J. M. Understanding the unorthodox stabilization of liquid phase exfoliated molybdenum disulfide (MoS2) in water medium. Physical Chemistry Chemical Physics, v. 22, n. 3, p. 1457-1465, JAN 21 2020. Web of Science Citations: 0.
FERREIRA, EDER H. C.; ANDRADE, RICARDO J. E.; FECHINE, GUILHERMINO J. M. The ``Superlubricity State{''} of Carbonaceous Fillers on Polyethylene-Based Composites in a Molten State. MACROMOLECULES, v. 52, n. 24, p. 9620-9631, DEC 24 2019. Web of Science Citations: 0.

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