Fabrication of fullerene-decorated carbon nanotubes and their application in flame-retarding polypropylene

Abstract

Multi-walled carbon nanotubes were decorated with fullerene (C(60)) via a three-step chemical functionalization, with the goal of combining their unique physical and chemical characteristics and simultaneously improving the solubility of CNTs in organic solvents. C(60) molecules, about 0.67% by molecule, were homogeneously bonded onto the surface of the CNTs. Electron microscopy clearly shows that C(60) molecules are introduced onto the surface of the CNTs, and this is also evidenced by their UV-VIS absorption spectra. Cone calorimetry measurements showed that compared with pristine CNTs, fullerene-decorated CNTs further reduced the flammability of polypropylene, which may be due to the free-radical-trapping effect of C(60) and the barrier effect of the CNT network.

Facile fabrication of HDPE-g-MA/nanodiamond nanocomposites via one-step reactive blending

“…After being modified by APTES, several remarkable changes take place. The absorption peaks at 630 and 1,120 cm −1 are attributed to the stretching vibrations of Si-C bond and Si-O-Si or Si-O-C bond [12]. In addition, new bands at 806 and 1,400 cm −1 may be assigned to stretching vibration of C-N and bending vibration of -NH 2 .…”

Synergistic effect of carbon fibers and carbon nanotubes on improving thermal stability and flame retardancy of polypropylene: a combination of a physical network and chemical crosslinking

“…[23][24][25][26][27][28][29][30][31][32][33] Song et al reported the improvements of flame 50 retardancy of PP by C60-decorated carbon nanotubes (CNTs) due to the free radical trapping effect of C60 and the network of CNTs. 34 Jose et al showed that the alumina-clay nanoscale hybrid improved the mechanical and thermal properties of PP.…”

Flame retarded polymer nanocomposites: Development, trend and future perspective

“…Much work has been done in our group to study the effect of C 60 on the thermal properties and flame retarded properties of PP [116][117][118]. The results showed that a tiny amount of C 60 can greatly improve the thermal stability.…”

“…POSS has excellent thermal stability. Research on PP/POSS nanocomposites found that only Al-based POSS has good flame retarded properties and pure POSS as well as Zn-based POSS did not show any flame Figure 9 Schematic synthesis route for carbon nanotubes grafted by C 60 (C 60 -d-CNTs) [118]. retardancy.…”