Author
Cíntia Soares
Other affiliations: State University of Campinas
Bio: Cíntia Soares is an academic researcher from Universidade Federal de Santa Catarina. The author has contributed to research in topics: Computational fluid dynamics & Microreactor. The author has an hindex of 13, co-authored 82 publications receiving 657 citations. Previous affiliations of Cíntia Soares include State University of Campinas.
Papers
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TL;DR: The use of hydroxyapatite (HA), as reinforcement agent to modify the UHMWPE properties and facilitate biological fixation between the implant and the human cells showed that the addition of HA in polymer matrix result in enhancement of mechanical and tribological properties.
87 citations
TL;DR: In this article, the authors used various analytical tools for identification and characterization of microplastics and their transformation products in environmental compartments, including membrane filtration and coagulation-flocculation-settling treatments.
81 citations
TL;DR: The geopolymers synthesized from bottom ash and metakaolin in a 2:1wt ratio showed a high degree of S/I of the metals; in some samples, the results reached nearly 100%.
77 citations
TL;DR: In this paper, Np-ZnO and octadecylammonium (Np-Clay) were incorporated into chitosan (C) matrix in different proportions to evaluate its mechanical properties and antimicrobial activities.
Abstract: Sodium montmorillonite organically modified by octadecylammonium (Np-Clay) and zinc oxide nanoparticles (Np-ZnO) were incorporated into chitosan (C) matrix in different proportions to evaluate its mechanical properties and antimicrobial activities. The composites were obtained by polymer intercalation method in solution using acetic acid (1% v/v) as solvent. The functional groups, thermic behavior and surface morphology of the chitosan film and of the composites prepared with different percentages of Np-Clay and Np-ZnO were characterized through Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), differential scanning calorimetry (DSC) and scanning electron microscopy (SEM). The results showed that a combined effect of clay and zinc oxide increases significantly the mechanical properties of pure chitosan. FTIR results confirmed good compatibility among functional groups of chitosan, montmorillonite/metallic oxides. The Np-ZnO distribution became more uniform in chitosan films when the Np-clay was incorporated, thus, the Np-Clay compatibilizes the Np-ZnO with the chitosan and the mechanical properties improved and without affecting the antimicrobial activity of the films. The thermal degradation temperature of the chitosan did not change significantly with the addition of Np-Clay, but changes significantly with Np-ZnO addition. In antimicrobial test was found that the chitosan and Np-ZnO showed a synergistic effect against to Escherichia coli and Staphylococcus aureus. The addition of Np-ZnO and C-Clay in chitosan resulted in enhancement of mechanical and antimicrobial properties, turning this material prospective for food packaging applications.
61 citations
TL;DR: In this paper, a simple ultrasound-assisted wet impregnation method followed by silver photodeposition was used to obtain photocatalysts with different Ag contents, which were characterized by XRD, FE-SEM, EDX, TEM, BET, XPS, DRS and PL techniques.
60 citations
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Journal Article•
28,685 citations
TL;DR: In this article, a review of different treatment methods for removing heavy metals from the aquatic environment with a different degree of success has been presented, and the distinctive sorts of treatment strategies for the removal of the toxic metals from wastewater had been explained.
742 citations
01 Jan 2016
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430 citations
TL;DR: The present review elucidates the role of CFA as an emerging input in delivering eco-friendly amenities and future derivatives and focuses on impending applications such as synthesis of geopolymers, silica aerogels, carbon nanotubes for electronic devices, and the separation of radioactive isotopes as well as rare earth elements from CFA.
277 citations