Non-covalent functionalized nanotubes in nylon 12

Hofstra, A. A.; Morris, Melanie L.; Sample, Jennifer L.; Powell, William

doi:10.1117/12.730380

Cited by 2 publications

(2 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…One nanomaterial that is widely used for space applications is the carbon nanotube (CNT). Hollow, less than 1 nm in diameter at their smallest, and composed only of graphitic carbon, CNTs exhibit material properties that are superior to bulk graphite in nearly every conceivable category (Hofstra et al 2007). Their strength and hardness rival that of diamond, their thermal conductivity rivals most metals, their density is comparable to a polymer, and their electrical conductivity is so high that electron transport is ballistic (Spinks et al 2002).…”

Section: Engineered Nanotechnology In Extreme Environmentsmentioning

confidence: 99%

Systems Engineering and Nanotechnology

Sample¹,

Benkoski²

2010

INSIGHT

Self Cite

View full text Add to dashboard Cite

N anotechnology is technology that is based on the exploitation of properties of nanomaterials, which are materials with at least one dimension less than 100 nm. The ability to reproducibly control matter at this extreme scale is important to both the development and success of nanotechnology and has been enabled by advances in instrumentation, synthesis, fabrication, and characterization in the past few decades (Siegel et al. 1999, 336). These advances include the ability to image and manipulate individual atoms, the ability to synthesize monodisperse nanoparticles, the discovery and manufacture of carbon nanotubes, and nanoscale lithography. A nanotechnology-enhanced component may appear to be little more than a pile of powder (Nohynek 2007), a bottle of solution (Daniel 2004), or an invisible surface coating (Ulman 1996). Despite concerns that the small length scales complicate the management of functional interfaces within a macroscopic system, the majority of nanomaterials that are in use today operate through aggregate behavior and therefore have little functional difference from a bulk material.Although the discovery and subsequent exploitation of nanomaterials have led to some of the greatest leaps in physical properties over the last twenty years, the technology still has its limitations. The systems engineer must be mindful of the underlying physics in order to properly apply these technologies to meet customer needs and objectives. The main advantages conferred by the reduced length scale include (1) quantum effects, (2) non-averaged properties, (3) large surface-to-volume ratio, (4) short diffusion lengths, and (5) thermal activation.The large surface-to-volume ratio arises from the fact that surface area scales with the square of size, whereas the volume scales with the third power. Consequently, 60% of the atoms in a 2.5 nm nanoparticle are at the surface (Wengemayr 2001). The large surface area has implications for any process that occurs at a surface: catalysis, conduction, chromatography, detection, friction, or adhesion. In most of these processes, the properties improve with increasing surface area without limit. Nanotechnology is therefore especially important for power-and-energy systems because batteries, supercapacitors, photovoltaics, and fuel cells all perform their function across a material-to-material interface. Short diffusion lengths also benefit the performance of these power-andenergy systems. By decreasing the distance over which an atom, ion, or electron has to travel, the amount of time required decreases accordingly. For diffusive processes, the rate scales with the inverse square of distance, greatly improving power generation.Examples of such behavior can be seen in living systems. All organisms exploit nanotechnology in the sense that cell membranes, proteins, and DNA are all nanoscale objects. So everything from chemical detection by ants, the logic function of the human brain, and the mechanical properties of abalone shells depend in one form or another on nanoscale pheno...

show abstract

Section: Engineered Nanotechnology In Extreme Environmentsmentioning

confidence: 99%

Systems Engineering and Nanotechnology

Sample¹,

Benkoski²

2010

INSIGHT

Self Cite

View full text Add to dashboard Cite

show abstract

“…To this end, the attraction force induced among the individual CNTs in a solvent must be reduced. The most widely used approach to enhance the dispersibility of CNTs is to use surfactants, which are cost effective and can be easily processed through simple mixing processes such as sonication or mechanical stirring [31][32][33][34][35][36][37][38][39][40][41][42][43][44][45][46]. Surfactants incorporated on the CNT surface generate a surface charge (Figure 2) [47].…”

Section: Introductionmentioning

confidence: 99%

Research Trends on the Dispersibility of Carbon Nanotube Suspension with Surfactants in Their Application as Electrodes of Batteries: A Mini-Review

et al. 2022

View full text Add to dashboard Cite

In the battery field, carbon nanotubes (CNTs) attract much attention due to their potential as a supporting conducting material for anodes or cathodes. The performance of cathodes or anodes can be optimized by introducing densely packed CNTs, which can be achieved with high dispersibility. The efficiency of CNT usage can be maximized by enhancing their dispersibility. An effective technique to this end is to incorporate surfactants on the surface of CNTs. The surfactant produces a surface charge that can increase the zeta potential of CNTs, thereby preventing their agglomeration. Additionally, surfactants having long chains of tail groups can increase the steric hindrance, which also enhances the dispersibility. Notably, the dispersibility of CNTs depends on the type of surfactant. Therefore, the results of dispersibility studies of CNTs involving different surfactants must be comprehensively reviewed to enhance the understanding of the effects of different surfactants on dispersibility. Consequently, this paper discusses the effect of different types of surfactants on the dispersibility of CNTs and presents several perspectives for future research on dispersibility enhancement.

show abstract

Non-covalent functionalized nanotubes in nylon 12

Cited by 2 publications

References 0 publications

Systems Engineering and Nanotechnology

Systems Engineering and Nanotechnology

Research Trends on the Dispersibility of Carbon Nanotube Suspension with Surfactants in Their Application as Electrodes of Batteries: A Mini-Review

Contact Info

Product

Resources

About