A novel approach to obtain conductive tracks on PP/MWCNT nanocomposites by laser printing

Abstract

Metal-free conductive tracks were obtained by laser printing on a polypropylene matrix by adding MW-CNTs.

Matrix tacticity controlled tuning of microstructure, constitutive behavior and rheological percolation effect of melt‐mixed amino‐functionalized MWCNT/PP nanocomposites

“…They are (a) the extent of dispersion is quasi homogeneous due to a higher amorphous fraction and macro agglomeration tendencies are substantial due to polymeric absorptive affinity and (b) higher extent of MWCNT may pave the pathway to establish an easy metal‐free conductive tracks in tacticity‐mixed PP/MWCNT nanocomposites. Such an observation may easily be correlated to the findings reported by Colucci et al .…”

Laser printing of conductive tracks with extremely low electrical resistance on polymer–carbon nanotubes composite: An optimization study of laser setup parameters by design of experiment approach

“…Laser treatments were carried out by using a CO 2 laser Towermark XL from Lasit, emitting in the infrared range ( λ = 10,600 nm) as was reported in previous papers . Five different parameters were considered and modified to tune the interaction with polymer.…”

“…After the melting caused by the contact with a heating body, IR irradiation or the laser beam effect the CNT migrate toward the molten zone until their concentration overtakes the percolation threshold, and this part of the composites becomes electrically conductive after cooling. In the last few years, some papers based on a patent , demonstrated the possibility of functionalizing the CNT–polymer composite surface using laser printing. Here the laser beam acts on the surface of the composite inducing the formation of conductive tracks embedded in an insulating polymer.…”

“…Leibscher et al analyzed the effect of laser printing on the electrical conductivity of MWCNT‐based polypropylene/polycarbonate (PP/PC) blend with different PP/PC ratios, observing that it is possible to reduce the resistivity of the induced conductive tracks by increasing the PC content, due to a better filler dispersion. Moreover, both Leibscher and Colucci et al observed that depending on the laser parameter setup, different values of electrical resistance can be achieved. In fact, laser treatment can be tuned on the basis of five different parameters: (i) power, P (expressed as % of the maximum power available); (ii) frequency, F (kHz); (iii) writing speed, V (mm/s); (iv) number of repetitions, N ; and (v) defocusing, D .…”

Gel electrolytes based on poly(vinylidenefluoride-co-hexafluoropropylene)/thermoplastic polyurethane/poly(methyl methacrylate) with in situ SiO2 for polymer lithium batteries

“…Polymer lithium batteries are widely used in mass-produced digital devices and are gaining popularity in the electric vehicle market and energy storage systems because of their high energy density and long cycle life. [1][2][3][4][5] In recent years, polymerbased nanocomposites which are used in polymer lithium batteries have attracted considerable academic and industrial attention, [6][7][8][9][10] because polymer lithium batteries are safer than liquid lithium-ion batteries. Be that as it may, there is a long way to go in polymer lithium-ion battery large-scale application.…”