We have modified single walled carbon nanotubes (SWCNTs) with well defined matrix-based architectures to improve interface interaction in SWCNT/epoxy composites. The hardener and two pre-synthesized oligomers containing epoxy and hardener moieties were covalently attached to the SWCNT walls by in situ diazonium or carboxylic coupling reactions. In this way, SWCNTs bearing amine or epoxide-termi...

Covalent sidewall functionalization of single-walled carbon nanotubes (SWCNTs) is an important tool for tailoring their properties for research purposes and applications. In this study, SWCNT samples were first functionalized by reductive alkylation using metallic lithium and 1-iodododecane in liquid ammonia. Samples of the alkyl-functionalized SWCNTs were then pyrolyzed under an inert atmosphe...

Functionalization of single-walled carbon nanotubes (SWNTs) with covalently grafted amine moieties provides reactive fillers with potential covalent anchoring to an epoxy matrix. Manufacturing and characterization of a high performance epoxy system reinforced with as-grown and aminated SWNTs are presented through four different approaches. Epoxy composite materials incorporating SWNTs aminated ...

A poly(acrylic acid)±surfactant±multi-walled carbon nanotube complex was prepared and characterized using transmission electron microscopy, scanning electron microscopy, wide-angle X-ray di€raction and small-angle X-ray di€raction. The complex was found to retain a lamellar structure, and helped micrometer-length multi-walled carbon nanotube dissolve in organic solvents. Its nonlinear optical p...

the lack of complete understanding of the substrate effects on carbon nanotubes (cnts) growth poses a lot oftechnical challenges. here, we report the direct growth of nanostructures such as the cnts on stainless steel 304and brass substrates using thermal chemical vapor deposition (tcvd) process with c2h2 gas as carbon sourceand hydrogen as supporting gas mixed in ar gas flow. we used an especi...

a novel mixing approach for achieving a good dispersion of multi-walled carbon nanotubes (mwcnts) in ethylene- propylene diene monomer (epdm) matrix has been investigated. in this approach epdm was modified with vinyltrimethoxysilane (vtms) during melt mixing. in addition the effect of mwcnt concentration on mechanical and rheological properties of modified epdm has been studied. the formulated...

in this paper, synthesized (raw) multi-walled carbon nanotube (rmwcnts) surfaces were modified with chitosan and β-cyclodextrin using chen’s soft cutting technique. raw and surface modified multi-walled carbon nanotubes were observed by transmission electron microscope (tem). the results showed that chitosan and β-cyclodextrin could attach to the outer surface of nanotubes, wrapping the nanotub...

Polypyrrole multi-walled carbon nanotube composite layers were used to modify the gold layer to measure heavy metal ions using the surface plasmon resonance technique. The new sensor was fabricated to detect trace amounts of mercury (Hg), lead (Pb), and iron (Fe) ions. In the present research, the sensitivity of a polypyrrole multi-walled carbon nanotube composite layer and a polypyrrole layer ...