Chemical functionalization by a fluorinated trichlorosilane of multi-walled carbon nanotubes

Abstract

In this paper, the chemical functionalization of multi-walled carbon nanotubes by a fluorinated trichlorosilane ((tridecafluoro-1,1,2,2-tetrahydrooctyl)trichlorosilane) is investigated. The chlorosilane has been shown to react with carboxylic acid moieties, created by an oxidative process on the nanotube walls, as well as with alcohol groups obtained by a reductive reaction of these previous oxidized nanotubes. The derivatizations were directly confirmed by x-ray photoelectron spectroscopy and thermogravimetry analyses. Little difference in the functionalization was observed for the oxidized or reduced nanotubes. However, the amount of grafted silane seems to be slightly more important when the silanization is carried out with reduced nanotubes.

Functionalization of carbon nanotubes using a silane coupling agent

“…The coupling process can be accomplished via the chemical reaction between the trialkoxy groups of silane molecules and the hydroxyl groups on the glass substrates, whereas other functional groups of silane molecules, which are generally ethylene, amine, epoxy, thiohydroxy, etc, can be remained. Recently, this process has been applied to functionalize the CNTs surface [12][13][14]. This paper is part of a larger project on the development of surface treatment techniques for carbon nanotubes as the reinforcement of polymer matrix nanocomposites.…”

Covalent bromination of multi-walled carbon nanotubes by iodine bromide and cold plasma treatments

“…2. As it is seen the deconvolution results in six different components [21,[38][39][40][41][42] being assigned the main one, at 284.3 ± 0.1 eV, to graphitic carbon and that at 285.0 ± 0.2 eV to non-conjugated carbon (sp 3 carbon in defects and non-graphene parts of the CNTs).…”

Long-term moisture effects on the interfacial shear strength between surface treated carbon fiber and epoxy matrix

“…The application of silane coating is based on the fact that the (3-glycidyloxypropyl) trimethoxysilane can be hydrolyzed to produce silanol, which forms chemical bond with hydroxyl on the sizing of carbon fibers on one side [30][31][32][33]. On the other side, functional group containing epoxide group can be cross-linked with epoxy matrix under the action of hardener to produce a chemical bond.…”