TY - JOUR
T1 - Measurement of Characteristics of PU/MWNT Films made of Modified MWNT by Dry Heat Treatment
AU - Seung-Jin Kim, Jeong-Hyun Kim & Jun-Hyeong Park 
JO - Journal of Fiber Bioengineering and Informatics
VL - 4
SP - 216
EP - 223
PY - 2010
DA - 2010/03
SN - 3
DO - http://doi.org/10.3993/jfbi03201105
UR - https://global-sci.org/intro/article_detail/jfbi/4971.html
KW - Multi-walled carbon nanotube
KW - polyurethane
KW - dispersion
KW - DMF
KW - PU ⁄ MWNT film
KW - electrostatic dissipation
AB - This study examines the electrical conductivity of multi-walled carbon nanotube (MWNT) /polyurethane (PU) nanocomposites film 
according to the dispersion conditions. For this purpose, various kinds of polyurethane block copolymer (PU)/multi-wall carbon 
nanotube (MWNT) with different MWNT contents were mixed and dispersed, and their characteristics related to the dispersion 
were investigated. Multi-walled carbon nanotubes (MWNT) are of interest in many areas of nanotechnology and used in a number 
of novel applications. However effective dispersion remains a problem and one solution is to functionalize the nanotubes. In this 
work, MWNTs are functionalized using an oxidative technique, including dry thermal treatment. The dispersion variation of the 
PU/MWNT nanocomposite films with MWNT content ranging from 0.1 ∼ 5.0 wt% was examined. The various characteristics of the 
dispersed PU/MWNT nanocomposite film were characterized using thermo gravimetric analyser (TGA), scanning electron 
microscope (SEM) and measuring instrument of electrical conductivity. The degree of dispersion of PU/MWNT nanocomposite 
films according to the dispersion conditions was shown in various situations. The bad dispersion of PU/MWNT film was revealed 
during the phase separation between PU matrix and MWNT. Also PU/MWNT nanocomposite film shows good electro-conductivity 
on its surface because MWNT was collected on the surface of composite film due to its low density.