TY - GEN
T1 - Preparation and electrical properties of the MWNT/polymer nanocomposite fibers
AU - Wang, Guan
AU - Tan, Zhongkui
AU - Liu, Xueqing
AU - Samuilov, Vladimir
AU - Dudley, Michael
PY - 2006
Y1 - 2006
N2 - An oxidation method has been applied to functionalize multiwalled carbon nanotubes with carboxylic acid (-COOH) group. Functionalized carbon nanotubes (f-MWNT) were used for the fabrication of conducting nanocomposite fibers by electrospinning, in comparison with the composite nanofibers made of un-functionalized carbon nanotubes (u-MWNT). Our results showed that the addition of f-MWNTs into polymer solution could increase the compatibility of MWNTs with the polymer matrix, and thus result in composite nanofibers with uniform diameters. Alignment of the composite nanofibers was achieved by using a rotating drum as the collector. F-MWNTs were found to align parallel to the axis direction of the nanofibers. Temperature-dependent DC electrical properties of a single composite fiber were investigated by a two-probe method. It was shown that the conductivity of the material could be significantly improved above a percolation threshold. The conductivity could be of ten orders of magnitude higher than the pure polymer.
AB - An oxidation method has been applied to functionalize multiwalled carbon nanotubes with carboxylic acid (-COOH) group. Functionalized carbon nanotubes (f-MWNT) were used for the fabrication of conducting nanocomposite fibers by electrospinning, in comparison with the composite nanofibers made of un-functionalized carbon nanotubes (u-MWNT). Our results showed that the addition of f-MWNTs into polymer solution could increase the compatibility of MWNTs with the polymer matrix, and thus result in composite nanofibers with uniform diameters. Alignment of the composite nanofibers was achieved by using a rotating drum as the collector. F-MWNTs were found to align parallel to the axis direction of the nanofibers. Temperature-dependent DC electrical properties of a single composite fiber were investigated by a two-probe method. It was shown that the conductivity of the material could be significantly improved above a percolation threshold. The conductivity could be of ten orders of magnitude higher than the pure polymer.
UR - https://www.scopus.com/pages/publications/40949144038
U2 - 10.1557/proc-0963-q20-24
DO - 10.1557/proc-0963-q20-24
M3 - Conference contribution
AN - SCOPUS:40949144038
SN - 9781604234152
T3 - Materials Research Society Symposium Proceedings
SP - 82
EP - 87
BT - Nanowires and Carbon Nanotubes
PB - Materials Research Society
T2 - 2006 MRS Fall Meeting
Y2 - 27 November 2006 through 1 December 2006
ER -