Preparation and characterization of P(AN‐co‐VA‐co‐DEMA) fibers coated with multiwalled carbon nanotubes by electrostatic interactions

Abstract

P(AN-co-VA-co-DEMA) terpolymers were synthesized by aqueous precipitation copolymerization of acrylonitrile (AN), vinyl acetate (VA), and 2-dimethylamino ethyl methacrylate (DEMA) with an Na 2 S 2 O 5 -NaClO 3 redox initiating system and fibers from these terpolymers were thus prepared by a wet spinning method. Functionalized multiwalled carbon nanotube (F-MWNT) networks were created on the surface of P(AN-co-VA-co-DEMA) fibers by a simple dipping method. The morphology and interfacial interactions of the obtained F-MWNTs-coated fibers were characterized by scanning electron microscope, Raman spectroscopy, and Fourier transform infrared spectroscopy. The results showed that F-MWNTs were assembled on the fibers and the density of F-MWNTs can be controlled by adjusting the F-MWNTs content in the dipping solution. The assembly process was driven by electrostatic interactions between the negative charges on the nanotube sidewalls and the positive charges of the fibers. The F-MWNTs-coated fibers had a good conductivity. The volume resistivity of the fibers coated with 1.18 wt % F-MWNTs reached 0.27 XÁcm, while the original mechanical properties were preserved.

Rheological Behaviors of Graphene Oxide/Polyacrylonitrile Spinning Solutions

“…GO was prepared from purified natural graphite (Bay Carbon, SP-1) by a modified Hummers method [15,16]. Prepared in our previous study [1] a AN, MA, MAS, VA and DEMA stand for acrylonitrile, methyl acrylate, sodium allylsulfonate, vinyl acetate and 2-dimethylamino ethyl methacrylate, respectively.…”

“…Polyacrylonitrile (PAN) fiber has been widely used in home furnishing, apparel, and industrial fabric, which is also known as a popular high performance precursors for carbon fibers [1]. These diverse applications make its solution properties to be an important research topic for fiber spinning.…”