Surfactant-based dispersant for multiwall carbon nanotubes to prepare ceramic composites by a sol-gel method.

Summary of "Surfactant-based dispersant for multiwall carbon nanotubes to prepare ceramic composites by a sol-gel method."

A dispersant for multiwall carbon nanotubes (MWCNTs) is proposed that fulfils the requirements of creating a uniform dispersion in the matrix and obtaining a good interface between CNTs and the matrix, and is soluble in generic nonpolar solvents. This dispersant is based on a long chain surfactant, called in this work dabcosil stearate, containing a stearate-based 18-carbon alkyl chain as an anion, and a silsesquioxane containing a bridged, positively charged 1,4-diazoniabicyclo[2.2.2]octane group. It provides not only a very good dispersion medium for the MWCNTs, but also a very good interface between MWCNTs and ceramic matrices, such as alumina and zirconia, prepared by the sol-gel method.


Instituto de Física, Universidade Federal do Rio Grande do Sul , PO Box 15051, CEP 91501-970 Porto Alegre, RS Brazil.

Journal Details

This article was published in the following journal.

Name: Langmuir : the ACS journal of surfaces and colloids
ISSN: 1520-5827
Pages: 1447-52


DeepDyve research library

PubMed Articles [19810 Associated PubMed Articles listed on BioPortfolio]

Polymeric Materials Reinforced with Multiwall Carbon Nanotubes: A Constitutive Material Model.

In this paper we have modified an existing material model introduced by Cantournet and co-workers to take into account softening and residual strain effects observed in polymeric materials reinforced ...

Torsional Resonators Based on Inorganic Nanotubes.

We study for the first time the resonant torsional behaviors of inorganic nanotubes, specifically tungsten disulfide (WS2) and boron nitride (BN) nanotubes, and compare them to that of carbon nanotube...

Carbon nanotubes, graphene and boron nitride nanotubes reinforced bioactive ceramics for bone repair.

The high brittleness and low strength of bioactive ceramics severely restricted their applications in bone repair despite they have been regarded as the most promising biomaterials. In the last few ye...

N-Doped porous carbon nanotubes: synthesis and application in catalysis.

Uniform N-doped carbon nanotubes were obtained for the first time via a morphology-preserving thermal transformation of organic polymer nanotubes without any additional templates. These carbon nanotub...

Efficient electrocatalytic O2 reduction at copper complexes grafted onto polyvinylimidazole coated carbon nanotubes.

A facile approach to prepare Cu complexes for an efficient oxygen reduction reaction (ORR) was developed. Copper complexes of 5-nitrophenanthroline were sandwiched between polyvinylimidazole layers wr...

Clinical Trials [2547 Associated Clinical Trials listed on BioPortfolio]

Clinical Performance and Wear Mechanism of Hot-Pressed Ceramic Crowns

The objectives of this study are to characterize the clinical performance and wear mechanisms of all-ceramic posterior crowns. The wear rate of all-ceramic crowns and opposing enamel in s...

Does The Surfactant Administration by Aerosolization Effective?

The present study was designed to evaluate, in premature babies with RDS breathing spontaneously, the efficacy of combined treatment with nasal continuous positive airway pressure (CPAP) a...

Surfactant Lavage vs. Bolus Surfactant in Neonates With Meconium Aspiration

The objective of this pilot study is to examine the feasibility and safety of performing a larger trial to assess outcomes following treatment of meconium aspiration syndrome with surfacta...

Patient Satisfaction of Glazed IPS Empress CAD Versus Glazed Celtra Duo Ceramic Laminate Veneers

The most frequent reason for failure of laminate veneers made of glass ceramics (feldspathic, leucite based and lithium silicate based ceramics) was fracture of the ceramic, Therefore, cer...

Genetic Regulation of Surfactant Deficiency

Inherited deficiencies in any one of 3 genes (surfactant protein B, surfactant protein C, and ATP-binding cassette transporter A3) can cause neonatal respiratory distress syndrome by disru...

Medical and Biotech [MESH] Definitions

A dark powdery deposit of unburned fuel residues, composed mainly of amorphous CARBON and some HYDROCARBONS, that accumulates in chimneys, automobile mufflers and other surfaces exposed to smoke. It is the product of incomplete combustion of carbon-rich organic fuels in low oxygen conditions. It is sometimes called lampblack or carbon black and is used in INK, in rubber tires, and to prepare CARBON NANOTUBES.

Nanometer-sized tubes composed of various substances including carbon (CARBON NANOTUBES), boron nitride, or nickel vanadate.

Nanometer-sized tubes composed mainly of CARBON. Such nanotubes are used as probes for high-resolution structural and chemical imaging of biomolecules with ATOMIC FORCE MICROSCOPY.

NANOTUBES formed from cyclic peptides (PEPTIDES, CYCLIC). Alternating D and L linkages create planar rings that self assemble by stacking into nanotubes. They can form pores through CELL MEMBRANE causing damage to cells.

A pulmonary surfactant associated protein that plays a role in alveolar stability by lowering the surface tension at the air-liquid interface. It is a membrane-bound protein that constitutes 1-2% of the pulmonary surfactant mass. Pulmonary surfactant-associated protein C is one of the most hydrophobic peptides yet isolated and contains an alpha-helical domain with a central poly-valine segment that binds to phospholipid bilayers.

Quick Search

DeepDyve research library

Relevant Topic

Generics Drugs
A generic drug (generic drugs, short: generics) is a drug defined as "a drug product that is comparable to brand/reference listed drug product in dosage form, strength, route of administration, quality and performance characteristics, and intended u...

Searches Linking to this Article