A novel sensor for organic solvent vapors based on conductive amorphous polymer composites: carbon black/poly(butyl methacrylate)

Electrical resistance response of carbon black filled amorphous polymer composite sensors to organic vapors at low vapor concentrations

“…The CB/PBMA composites were synthesized according to the procedures described elsewhere [21]. The number average molecular weight of PBMA, analyzed by gel permeation chromatography, was 1.28 · 10 4 .…”

“…This factually deteriorates the processability of the composites. In our previous work [18,21], in-situ polymerization of monomers in the presence of carbon black proved to be an effective technique to obtain conductive composites with low percolation threshold and good dispersion of carbon black. The migration of tiny monomer molecules into carbon black prior to the polymerization facilitates intimate contacts between the fillers and the resultant matrix polymer.…”

“…It is hoped that some basic understanding of the mechanisms involved can be acquired for further developing the composites. The knowledge of the composites' response to saturated organic vapors [21] can be used as a reference.…”

Electrical Conductivity Modeling of Polypropylene Composites Filled with Carbon Black and Acetylene Black

“…To better control the applications of these materials, it is necessary to develop fundamental knowledge about the factors that control the conductivity in composites. These can then be used to find and develop new composites used for new fields [1][2][3][4][5].…”

Gas sensitivity of carbon black/waterborne polyurethane composites

“…Their results indicated that the systems are rather sensitive to temperature, swelling and pressure due to the effect of double-percolation as compared with the composites using single polymers as matrices. Zhang and coworkers synthesized carbon black/amorphous polymer composites by polymerization filling [13][14][15][16][17][18]. Due to the intimate interfacial contacts, the composites are associated with low percolation threshold, good processability and reproducible sensitivity against organic vapors.…”