Polystyrene-block-poly(tert-butyl methacrylate)/multiwall carbon nanotube ternary conducting polymer nanocomposites based on compatibilizers: Preparation, characterization and vapor sensing applications

Environmental pollutants, especially volatile organic compounds (VOCs), often cause some serious health issues, and hence it is imperative to monitor and prevent the leakage and diffusion of these vapors. Nanomaterial based sensors are powerful tools in environmental monitoring. Since carbon nanotub...

Full description

Saved in:
Bibliographic Details
Published in:Materials & design 2015-12, Vol.87, p.149-156
Main Authors: Luo, Yan-Ling, Wei, Xue-Peng, Cao, Dan, Bai, Rui-Xue, Xu, Feng, Chen, Ya-Shao
Format: Article
Language:English
Subjects:
Carbon nanotubes
Chloroform
Compatibilizers
Conducting polymers
Dispersions
Electrical properties
Monitors
Multi wall carbon nanotubes
Nanocomposites
Polymer–matrix composites (PMCs)
Sensors
Smart materials
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Environmental pollutants, especially volatile organic compounds (VOCs), often cause some serious health issues, and hence it is imperative to monitor and prevent the leakage and diffusion of these vapors. Nanomaterial based sensors are powerful tools in environmental monitoring. Since carbon nanotubes tend to spontaneously aggregate and entangle together, resulting in heterogeneous dispersion and poor properties, it is necessary to find some methods to overcome this shortcoming and to fully exploit their applications. In this paper, a novel multiwall carbon nanotube graft polystyrene-block-poly(tert-butyl methacrylate) (MWNTs-g-PtBMA-b-PS) as a compatibilizer was designed and synthesized to construct polystyrene-block-poly(tert-butyl methacrylate)/MWNT (PS-b-PtBMA/MWNT) ternary conducting polymer nanocomposites and to fabricate into thin films to monitor chloroform vapor. The UV–vis, SEM and TEM investigations showed that the dispersion behavior of MWNTs was improved via incorporation of compatibilizer with various loading amounts. The nanocomposite thin films exhibited selective response to chloroform vapor, and the response patterns were influenced by the contents of compatibilizer and MWNTs and the analyte concentrations. The film sensors with compatibilizer exhibited excellent response, reproducibility and stability compared with those devoid of compatibilizer, and consequently they can be employed as a prospective candidate of chemical resistors or electronic noses for detection of chloroform vapor. [Display omitted] •We prepared novel ternary conducting nanocomposites based on compatibilizer.•The incorporation of the compatibilizer markedly improved dispersion of MWNTs.•The nanocomposites exhibited sensitive response, linear correlation and stability.•The responses were dependent upon the loading of the compatibilizer and MWNTs.
ISSN:0264-1275
1873-4197
DOI:10.1016/j.matdes.2015.08.030