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Stretchable conductive polyurethane elastomer in situ polymerized with multi-walled carbon nanotubes
作者:Dong Wang,* Haiying Li, Mufang Li, Haiqing Jiang, Ming Xia and Zhou Zhou
关键字:Stretchable conductive polyurethane elastomer
论文来源:期刊
发表时间:2013年
The development of the wearable sensors for healthcare related applications requires mechanically
stretchable, electrically conductive and biologically compatible elastomers. We have fabricated a
conductive polyurethane (PU) elastomer by in situ polymerization with surface hydroxyl-modified Multi-
Walled Carbon Nanotubes (MWNTs). The FT-IR and Raman spectroscopy results indicated that the
successful incorporation of the MWNTs into PU macromolecules. The good dispersion of MWNTs in
PU/MWNT elastomers was confirmed by transmission electron microscopy (TEM) and Raman
spectroscopy. Thermogravimetric analysis (TGA) suggested improved thermal stability of the in situ
polymerized PU/MWNT elastomers. The in situ polymerization with MWNTs led to a significant increase
in the conductivity of PU/MWNT elastomers. The stretching facilitated the orientation of the MWNTs
and further enhanced the conductivity of PU/MWNT elastomers. The in situ polymerized PU/MWNT
elastomers were employed as electrodes to construct a pressure sensor demonstrating good sensitivity
and consistency.