A5026612460- Fiber-reinforced polymer composites
- Glass properties and applications
- Advanced Battery Materials and Technologies
- Lignin and Wood Chemistry
- Solid-state spectroscopy and crystallography
- Biodiesel Production and Applications
- Microwave Dielectric Ceramics Synthesis
- Graphene research and applications
- Smart Materials for Construction
- Advancements in Battery Materials
- Petroleum Processing and Analysis
- Luminescence Properties of Advanced Materials
- Thermochemical Biomass Conversion Processes
- Catalysis and Hydrodesulfurization Studies
- Vibration and Dynamic Analysis
Instituto de Biologia do Exército
2006-2021
Université de Rennes
2018-2019
Centre National de la Recherche Scientifique
2018-2019
Institut des Sciences Chimiques de Rennes
2018-2019
Heavy petroleum residues can be used as raw materials in the production of various carbon products, notably isotropic and anisotropic pitches different types coke. The chemical characterization these residues, general, is a challenge that has to addressed order allow adequate optimization processes. In this study, refineries were studied by NMR, FTIR elemental analysis. Optimum parameters determined for NMR analysis diffuse reflectance spectroscopy (DRIFTS), technique usually applied solid...
This study investigated the appropriate methodology required to measure single carbon fibers electrical resistivity. Two- and four-probe methods were evaluated for this measurement. Comparing results filaments of pitch-based PAN-based shows that two-probe method gives acceptable fibers, but much higher deviations from adjusted resistivity (>15%). The small (<1%) both precursors is most suitable measurements fibers. accuracy than all samples tested.
Pitch-based carbon fibers production usually involves three thermal treatments after spinning: stabilization, carbonization, and graphitization.Stabilization is the slowest most costly step in which several phenomena co-occur, such as oxidation, dehydration, condensation, diffusion.This article reports a review of main results physical-chemical processes involved mesophase pitch-based fiber stabilization control parameters' influence on fiber's final properties.
Nanoesferas de carbono foram produzidas a partir resíduos petróleo, obtidos da produção piches pela destilação óleos decantados, técnica deposição química vapor 1200 °C, sem catalisadores, em um processo contínuo. Três selecionados forma representar faixa propriedades tipicamente encontradas para este material. Nitrogênio e argônio empregados como gases arraste. As nanoesferas obtidas apresentaram semelhantes os três diferentes, sendo influência do precursor menos significativa que gás...