TY - JOUR
T1 - The effect of multi-wall carbon nanotube morphology on electrical and mechanical properties of polyurethane nanocomposites
AU - Sethi, Jatin
AU - Sarlin, Essi
AU - Meysami, Seyyed Shayan
AU - Suihkonen, Reija
AU - Santha Kumar, Arunjunai Raja Shankar
AU - Honkanen, Mari
AU - Keinänen, Pasi
AU - Grobert, Nicole
AU - Vuorinen, Jyrki
N1 - INT=mol,"Santha Kumar, Arunjunai Raja Shankar"
INT=mol,"Sethi, Jatin"
PY - 2017/11/1
Y1 - 2017/11/1
N2 - In this study, we examine the effect of multi-wall carbon nanotubes (MWCNT) morphology on electrical and mechanical properties of MWCNT-filled polyurethane (PU) nanocomposites. The main objective of this study is to understand the role of aspect ratio and length of MWCNTs in determining the performance of nanocomposites. Highly aligned MWCNTs were prepared by aerosol-assisted chemical vapour deposition method and compared to commercially available MWCNTs in PU matrix for ease of dispersibility and performance. We observed opposing influence of the MWCNT on electrical and mechanical behaviour of the nanocomposites. The electrical properties were proportional to length of the MWCNTs whereas the mechanical properties were dependent on the aspect ratio of the MWCNTs. Moreover, thicker nanotubes (approximately 40 nm) with a higher aspect ratio (approximately 225) are less prone to shortening and impart better tensile and storage modulus along with improved electrical and therefore are more suitable for the MWCNT nanocomposites.
AB - In this study, we examine the effect of multi-wall carbon nanotubes (MWCNT) morphology on electrical and mechanical properties of MWCNT-filled polyurethane (PU) nanocomposites. The main objective of this study is to understand the role of aspect ratio and length of MWCNTs in determining the performance of nanocomposites. Highly aligned MWCNTs were prepared by aerosol-assisted chemical vapour deposition method and compared to commercially available MWCNTs in PU matrix for ease of dispersibility and performance. We observed opposing influence of the MWCNT on electrical and mechanical behaviour of the nanocomposites. The electrical properties were proportional to length of the MWCNTs whereas the mechanical properties were dependent on the aspect ratio of the MWCNTs. Moreover, thicker nanotubes (approximately 40 nm) with a higher aspect ratio (approximately 225) are less prone to shortening and impart better tensile and storage modulus along with improved electrical and therefore are more suitable for the MWCNT nanocomposites.
KW - A. Carbon nanotubes and nanofibres
KW - A. Nanocomposites
KW - B. Electrical properties
KW - B. Mechanical properties
U2 - 10.1016/j.compositesa.2017.08.014
DO - 10.1016/j.compositesa.2017.08.014
M3 - Article
AN - SCOPUS:85028396181
SN - 1359-835X
VL - 102
SP - 305
EP - 313
JO - Composites Part A: Applied Science and Manufacturing
JF - Composites Part A: Applied Science and Manufacturing
ER -