Multi-wall carbon nanotube dispersion in PMMA matrix studied through rheology

Abstract

Polymeric matrix with carbon based nanoparticle nanocomposites based on Poly(methyl methacrylate)/ Multi-wall carbon nanotubes (MWCNT) were prepared by solution/precipitation method. In the course of procedure dispersions of MWCNT in PMMA methyl ethyl ketone solution were sonicated followed by dispersions precipitation pouring into non-solvent, water. Both types of CNT materials were used such as pure MWCNT and the same MWCNT after their adequate surface treatment with help of oxidation/grafting of binding element/radical polymerization. The aim of treatment was to covalently attach organic material onto surface of CNT to process their better dispersion in polymeric matrix leading to more effective CNT reinforcement effect. The state of CNT dispersion was characterized thought rheology measurements with help of parameters like elasticity and viscosity of the melt. Also the effect of sonication onto pure PMMA matrix was analyzed.