Abstract
Multi-walled carbon nanotubes (MWCNTs) are promising materials for chemical gas sensing because of their high electrical and mechanical properties and significant sensitivity to changes in the local environment. However, high-content MWCNT films suffer from the low tunability of the electrical resistance, which is crucial for high chemoresistive sensing performance. This study reports the conjugation of MWCNTs and oligomers of polyaniline (PANI) doped with Ag+ or Cu2+ incorporated into a PVC/polyacrylate. MWCNTs were sonicated in n-methyl pyrrolidine (NMP), and PANI was conjugated via a 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide and an N-hydroxysuccinimide (EDC/NHS) process. MWCNT/PANI Ag+ or Cu2+ conjugates were doped to form a coordinate bond. The doped conjugates were successfully incorporated into the PVC/polyacrylate. These MWCNT/PANI conjugates doped were exposed to different concentrations of ethylene gas to examine their feasibility for ethylene detection.
Highlights
Multi-walled carbon nanotubes (MWCNTs) had an of average diameter of 9.5 nm and Conjugates and Fabrication the Sensing
The overall results suggest the successful dispersion of MWCNTs in n-methyl pyrrolidine (NMP) and a MWCNT/PANI conjugation
Test detected three peaks, which indicate an amide bond, which confirmed the conjugation between the MWCNTs and PANI
Summary
CNTs are an emerging class of materials for the chemical sensing of gases and volatile organic compounds [4,5,6,7,8,9,10]. Their very high aspect ratio makes them suitable for a wide range of applications. CNTs have the advantage of working at room temperature [11], and material costs are usually low. Most CNT applications involve combining the CNTs with other materials such as polymers [12,13]
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
