Date of this Version
A coagulation method that provides better dispersion of SWNT in the polymer matrix has been used to produce single-walled carbon nanotube (SWNT)/poly(methyl methacrylate) (PMMA) composites. Optical microscopy and SEM show improved dispersion of SWNT in the PMMA matrix, which is a key factor in composite performance. Aligned and unaligned composites were made with purified SWNT with different SWNT loadings, from 0.1 to 7 wt%. Comprehensive testing shows improved elastic modulus, electrical conductivity, and thermal stability with addition of SWNT. The electrical conductivity of a 2 wt% SWNT composite decreases significantly (>105), when the SWNT is aligned and this result is discussed in terms of percolation.
single-walled carbon nanotube, SWNT, PMMA, thermoplastic, composites, alignment, nanocomposite, electrical conductivity, thermal stability
Du, F., Fischer, J. E., & Winey, K. I. (2003). A Coagulation Method to Prepare Single-Walled Carbon Nanotube/PMMA Composites and Their Modulus, Electrical Conductivity, and Thermal Stability. Retrieved from http://repository.upenn.edu/mse_papers/63
Date Posted: 31 July 2005
This document has been peer reviewed.