Nanotubos de carbono: potencial de uso em medicina veterinária

Machado, Ingrid Rios Lima; Mendes, Heloisa Maria Falcão; Alves, Geraldo Eleno Silveira; Faleiros, Rafael Resende

doi:10.1590/0103-8478cr20140003

Cited by 9 publications

(4 citation statements)

References 34 publications

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“…The structure of the CNT is composed of an enrolled graphite sheet in a planar-hexagonal arrangement of carbon atoms in honeycomb lattice appearance [ 165 , 166 ]. The nanotubes (NTs) are classified into multiwalled carbon NTs (MWCNTs) and single-walled carbon NTs (SWCNTs) where each type forms depending on the preparation method [ 165 , 167 ]. The MWCNTs are central hollow cores that are composed of two or more concentrated cylindrical shells of graphene sheets coaxially arranged.…”

Section: Carbon-based Nanomaterialsmentioning

confidence: 99%

A Comprehensive Review on Optical Properties of Polymer Electrolytes and Composites

et al. 2020

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Polymer electrolytes and composites have prevailed in the high performance and mobile marketplace during recent years. Polymer-based solid electrolytes possess the benefits of low flammability, excellent flexibility, good thermal stability, as well as higher safety. Several researchers have paid attention to the optical properties of polymer electrolytes and their composites. In the present review paper, first, the characteristics, fundamentals, advantages and principles of various types of polymer electrolytes were discussed. Afterward, the characteristics and performance of various polymer hosts on the basis of specific essential and newly published works were described. New developments in various approaches to investigate the optical properties of polymer electrolytes were emphasized. The last part of the review devoted to the optical band gap study using two methods: Tauc’s model and optical dielectric loss parameter. Based on recently published literature sufficient quantum mechanical backgrounds were provided to support the applicability of the optical dielectric loss parameter for the band gap study. In this review paper, it was demonstrated that both Tauc’s model and optical dielectric loss should be studied to specify the type of electron transition and estimate the optical band gap accurately. Other parameters such as absorption coefficient, refractive index and optical dielectric constant were also explored.

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Section: Carbon-based Nanomaterialsmentioning

confidence: 99%

A Comprehensive Review on Optical Properties of Polymer Electrolytes and Composites

et al. 2020

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“…The structure of CNT consists of enrolled graphitic sheet, which is a planar-hexagonal arrangement of carbon atoms distributed in a honeycomb lattice [12,13]. The nanotubes can be classified into either multi-walled (MWCNT) or single-walled (SWCNT) depending on its preparation method [12,14], as can be seen in Figure 2. MWCNTs consist of two or more concentric cylindrical shells of graphene sheets coaxially arranged around a central hollow core.…”

Section: Carbon Nanotubesmentioning

confidence: 99%

Polymer Nanocomposites with Different Types of Nanofiller

Oliveira¹,

Beatrice²

2019

Nanocomposites - Recent Evolutions

136

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The development of polymer nanocomposites has been an area of high scientific and industrial interest in the recent years, due to several improvements achieved in these materials, as a result of the combination of a polymeric matrix and, usually, an inorganic nanomaterial. The improved performance of those materials can include mechanical strength, toughness and stiffness, electrical and thermal conductivity, superior flame retardancy and higher barrier to moisture and gases. Nanocomposites can also show unique design possibilities, which offer excellent advantages in creating functional materials with desired properties for specific applications. The possibility of using natural resources and the fact of being environmentally friendly have also offered new opportunities for applications. This chapter aims to review the main topics and recent progresses related to polymer nanocomposites, such as techniques of characterization, methods of production, structures, compatibilization and applications. First, the most important concepts about nanocomposites will be presented. Additionally, an approach on the different types of filler that can be used as reinforcement in polymeric matrices will be made. After that, sections about methods of production and structures of nanocomposites will be detailed. Finally, some properties and potential applications that have been achieved in polymer nanocomposites will be highlighted.

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“…Carbon nanotubes can be classified depending on their preparation method. The classification of carbon nanotubes is either single-walled carbon nanotube or multi-walled carbon nanotube [40]. Single-walled carbon nanotube forms by rolling up a single graphene layer into a seamless cylinder [41].…”

Section: Chemical Structure Of Nanofillersmentioning

confidence: 99%

Application of Cold Plasma in Nanofillers Surface Modification for Enhancement of Insulation Characteristics of Polymer Nanocomposites: A Review

2021

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Polymer nanocomposites have gained much attention among researchers due to their excellent characteristics, such as high thermal resistivity and the ability to withstand higher electrical stress. Introducing nanoparticles into the polymer matrix can further improve the insulation characteristics. However, the effectiveness of nanocomposite polymer to suppress an electrical tree, enhancing the partial discharge, and increase the breakdown strength is still a question mark due to the agglomeration issue of nanoparticles, which causing the nanoparticle to be dispersed non-uniformly within the polymer matrix. Plasma treatment is one of the methods that potentially replace conventional modification techniques such as chemical functionalization and heat treatment to improve the dispersion of nanoparticles, nanocomposite bonding, and the compatibility between polymer-nanoparticle interfaces. By altering the surface of nanoparticles using cold plasma with a glow discharge mechanism, the surface morphology of nanoparticles can be modified in terms of chemical structure, which indirectly solves the nanoparticle agglomeration. This study presents a review on the application of cold plasma in surface modification to enhance insulation characteristics of nanocomposite polymers. Various polymer hosts combined with different untreated and plasma-treated nanofillers are also reviewed. The trends on nanomaterial surface modification using the cold plasma technique based on its operating pressure to improve the dielectric properties of nanocomposite polymers are also discussed accordingly.INDEX TERMS Cold plasma, nanofillers surface modification, nanocomposites polymer, and plasma treatment.

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Nanotubos de carbono: potencial de uso em medicina veterinária

Abstract: RESUMO

Cited by 9 publications

References 34 publications

A Comprehensive Review on Optical Properties of Polymer Electrolytes and Composites

A Comprehensive Review on Optical Properties of Polymer Electrolytes and Composites

Polymer Nanocomposites with Different Types of Nanofiller

Application of Cold Plasma in Nanofillers Surface Modification for Enhancement of Insulation Characteristics of Polymer Nanocomposites: A Review

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