Work

Piezoresistive Behaviour of Additively Manufactured Multi-Walled Carbon Nanotube/Thermoplastic Polyurethane Nanocomposites

Year: 2019

Type: article

Abstract: To develop highly sensitive flexible pressure sensors, the mechanical and piezoresistive properties of conductive thermoplastic materials produced via additive manufacturing technology were investigated. Multi-walled carbon nanotubes (MWCNTs) dispersed in thermoplastic polyurethane (TPU), which is flexible and pliable, were used to form filaments. Specimens of the MWCNT/TPU composite with various MWCNT concentrations were printed using fused deposition modelling. Uniaxial tensile tests were conducted, while the mechanical and piezoresistive properties of the MWCNT/TPU composites were measured. To predict the piezoresistive behaviour of the composites, a microscale 3D resistance network model was developed. In addition, a continuum piezoresistive model was proposed for large-scale simulations.

Source: Materials

DOI: 10.3390/ma12162613

Authors: Myoungsuk Kim, Jaebong Jung, Sungmook Jung, Young Hoon Moon, Dae-Hyeong Kim, Ji Hoon Kim

Institutions: Pusan National University, Korea Research Institute of Chemical Technology, Seoul National University

Language: English

Topic: Carbon Nanotubes in Composites

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $1,824

Funders: National Research Foundation, Ministry of Science, ICT and Future Planning, National Research Foundation of Korea