Thermoplastic Nanocomposites with Carbon Nanotubes

Sathyanarayana, S.; Hübner, Christof

doi:10.1007/978-3-642-40322-4_2

Cited by 36 publications

(21 citation statements)

References 130 publications

(160 reference statements)

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“…Among the various nanoparticles, carbon nanoparticles (CNTs) are used most frequently for assessment of viability and lethality of cells. They are widely used in chemical, industrial and biomedical applications due to their unique properties [97,98]. They are synthesized as single-walled carbon nanotubes (SW-CNTs) and multi-walled carbon nanotubes (MW-CNTs) [99].…”

Section: Cell Viability and Lethalitymentioning

confidence: 99%

In vitro and in vivo toxicity assessment of nanoparticles

2017

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Nanotechnology has revolutionized gene therapy, diagnostics and environmental remediation. Their bulk production, uses and disposal have posed threat to the environment. With the appearance of these nanoparticles in the environment, their toxicity assessment is an immediate concern. This review is an attempt to summarize the major techniques used in cytotoxity determination. The review also presents a detailed and elaborative discussion on the toxicity imposed by different types of nanoparticles including carbon nanotubes, gold nanoparticles, silver nanoparticles, quantum dots, fullerenes, aluminium nanoparticles, zinc nanoparticles, iron nanoparticles, titanium nanoparticles and silica nanoparticles. It discusses the in vitro and in vivo toxological effects of nanoparticles on bacteria, microalgae, zebrafish, crustacean, fish, rat, mouse, pig, guinea pig, human cell lines and human. It also discusses toxological effects on organs such as liver, kidney, spleen, sperm, neural tissues, liver lysosomes, spleen macrophages, glioblastoma cells, hematoma cells and various mammalian cell lines. It provides information about the effects of nanoparticles on the gene-expression, growth and reproduction of the organisms.

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Section: Cell Viability and Lethalitymentioning

confidence: 99%

In vitro and in vivo toxicity assessment of nanoparticles

2017

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“…Polymer nanocomposites containing carbon nanotubes are a relatively new type of materials with a great potential to be used in a wide-range of applications (1). CNTs can be used to prepare diverse polymer nanocomposites, consequently with distinct properties (2).…”

Section: Introductionmentioning

confidence: 99%

Semi-Continuous Heterophase Polymerization to Synthesize Nanocomposites of Poly(acrylic acid)-Functionalized Carbon Nanotubes

Silva-Jara

Manríquez‐González

López-Dellamary

et al. 2015

Journal of Macromolecular Science, Part A

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Two materials, pure poly(acrylic acid) (PAA) and nanocomposites with a matrix of PAA and carbon nanotubes (CNTs) as reinforcing agent were synthesized by semi-continuous heterophase polymerization (SHP). CNTs were prepared by a chemical vapor deposition technique and purified by steam. CNTs were characterized by a high resolution scanning electron microscopy (HRSEM) and Raman and Fourier transform infrared spectroscopies. Nanocomposites were prepared with: (i) purified CNTs (CNTs p ) or (ii) purified and functionalized CNTs possessing an acyl chloride moiety (CNTs OCl ). In both cases, the nanocomposites synthesis was carried out by in situ polymerization of acrylic acid (AA) by SHP. When CNTs OCl were used previously to the polymerization of AA, a series of specific amounts of CNTs OCl and AA were mixed to induce a chemical reaction between the carboxyl group of AA and the acyl chloride group of the CNTs OCl . The product, acrylic acid grafted to CNTs OCl (CNTs OCl -AA), was used to prepare the PAA-CNTs OCl nanocomposites. The PAA-CNTs OCl nanocomposites were characterized by HRSEM, Raman, FTIR and CPMAS 13 C-NMR spectroscopies and also by thermogravimetric analysis (TGA). The results reveal that PAA-CNTs OCl nanocomposites were formed by PAA macromolecules grafted to CNTs OCl . The kinetic behavior observed for the synthesis of pure PAA or PAACNTs OCl nanocomposites by SHP was similar. Latexes of PAA-CNTs OCl nanocomposites were stable without formation of a precipitate of CNTs OCl for over 1.5 years, while latex prepared with CNTs p and PAA, was unstable and formation of a precipitate of CNTs p was observed immediately after its preparation. PAA-CNTs p nanocomposites were characterized only by TGA. Moreover, latex of the PAA-CNTs p nanocomposite that did not precipitate immediately after its preparation, turned into a gel; this gelation never occurred with the PAA-CNTs OCl nanocomposite latex.

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“…Alternatively, CNTs have been embedded into polymers or other media to obtain materials with good electrical and thermal properties. 5,6 The main advantage of MWCNTs is that only a few weight percentage (wt%) of them can greatly improve the properties of the hosting material from the mechanical and electrical point of view. 6 The fall in production costs and the consequent increase of their availability have also made MWCNTs interesting filler materials for large-scale applications.…”

Section: Introductionmentioning

confidence: 99%

Investigation of epoxy resin/multiwalled carbon nanotube nanocomposite behavior at low frequency

et al. 2014

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In this work, the electrical characterization of nanocomposites made of epoxy resins with multiwalled carbon nanotubes is presented. As the filler, two different types of multiwalled carbon nanotubes with different aspect ratios (280, 1250) and defectiveness were selected. The production procedure, the morphological characterization, the I-V DC characteristics, and the low frequency complex permittivity (in the range 100 kHz-12 MHz) of these nanocomposites are discussed. To investigate the dispersion of the solution, a study which linked the mixing time to the zeta potential was performed. The experimental results show that with the same matrix and by using the same measurement techniques, the two nanocomposites give different results and can be correlated with the characteristics of nanotubes. The dc conductivity of the nanocomposites was measured by means of a two-point probe technique. The conductivity in the frequency range 100 KHz-12 MHz was evaluated using a circular disk capacitor and measuring the impedance. The measured conductivity follows a percolation scaling law of the form r } (p À p c ) t . A best fit to the measured conductivity data was obtained and the values of the exponent t compared to those in the literature.

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Thermoplastic Nanocomposites with Carbon Nanotubes

Cited by 36 publications

References 130 publications

In vitro and in vivo toxicity assessment of nanoparticles

In vitro and in vivo toxicity assessment of nanoparticles

Semi-Continuous Heterophase Polymerization to Synthesize Nanocomposites of Poly(acrylic acid)-Functionalized Carbon Nanotubes

Investigation of epoxy resin/multiwalled carbon nanotube nanocomposite behavior at low frequency

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