|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Late News Posters
||PP-30: Role of Chemical Dispersion and Functionalization on Mechanical Properties in Carbon Nanotube-Polymer Composites
||Sai Praveen Kumar Medisetti, Nick Roberts
|On-Site Speaker (Planned)
Since their discovery in 1991, carbon nanotubes (CNTs) were known for superior mechanical, thermal and electrical properties. Although many studies have been performed to enhance the properties of the composites using CNTs as filler material, results vary widely and property enhancement typically falls short of expectations. These less than expected results can be attributed to the challenge of good dispersion and matrix-filler bonding. This study focuses on role of chemical dispersion and CNT functionalization on the mechanical properties of the CNT composite. The dispersion quality is controlled by sonicating CNTs in an ethanol solution prior to mixing with polydimethylsiloxane(PDMS) resin followed by evaporation of the ethanol and polymerization. The quality of dispersion is characterized by performing image processing on optical images. Using tensile testing, relationship between mechanical property enhancement and chemical dispersion is clearly identified with a minimum of 7% increase in modulus of elasticity.