Effect of surface treatment on electrical conductivity of carbon black filled conductive polymer composites

Abstract

Two different types of surface modifiers, 3-aminopropyltriethoxysilane and formamide, were applied to carbon black (CB) particles to lower electrical resistivity of polymer composites prepared by treated CB. Two different matrices, low-density polyethylene and nylon 6, were chosen to compound with surface modified CB. Surface energy of CB was increased by adding amine or amide functional groups during surface treatment of CB. According to electron spectroscopy for chemical analysis (ESCA), chemical modification in surface chemistry of CB was obtained with the chemicals used for the treatment due to the nitrogen atoms in their structures, which may act as dopant atom. As a result of this, electrical resistivity of composites prepared by treated CB decreased. In addition, there was not any significant change in tensile strength and tensile modulus of the composites with the surface treatment.

A review of thermoplastic composites for bipolar plate applications

“…Koysuren et al . modified the surface of the filler by treating it with chemicals. In their study, they applied two different types of surface modifiers, 3‐aminopropyltriethoxysilane (APS) and formamide, to CB particles to reduce the electrical resistivity of polymer composites prepared by treated CB.…”

Effect of carbon nanotube surface treatment on the morphology, electrical, and mechanical properties of the microfiber‐reinforced polyethylene/poly(ethylene terephthalate)/carbon nanotube composites

“…18,27 The interfacial tensions between the composite constituents (c 1-2 ) can be determined by using the general equation with harmonic mean. Details of surface energy measurement procedure and calculations were discussed in supporting information file which may be found in the online version of this article and in our previous studies.…”

“…Sumita et al proposed that the selective localization of the filler in a polymer blend can be estimated by the wetting coefficient (w), which is defined by the following equation 27 ;…”

Effect of solid state grinding on properties of PP/PET blends and their composites with carbon nanotubes

“…Diiodomethane (DIM), ethylene glycol (EG), and formamide were utilized as probe liquids during contact angle measurements. 21 Surface free energy components of probe liquids are given in Table II. 22 According to Sessile drop method, contact angles of probe liquids on injection molded samples of PP and PET were used to calculate surface energy.…”