Polypyrrole/poly(methylmethacrylate) blend as selective sensor for acetone in lacquer |
| |
| Authors: | Ruangchuay Ladawan Sirivat Anuvat Schwank Johannes |
| |
| Affiliation: | a The Petroleum and Petrochemical College, Chulalongkorn University, Phya Thai Road, Soi Chulalongkorn 12 No (2), Bangkok 10330, Thailand
b Department of Chemical Engineering, University of Michigan, Ann Arbor, MI 48109-2136, USA |
| |
| Abstract: | A film of α-naphthalene sulfonate-doped polypyrrole/poly(methylmethacrylate), PPy/α-NS−/PMMA, obtained from solution mixing was successfully used as sensing material for acetone vapor in lacquer with a high degree of selectivity based on electrical conductivity over acetic acid and a high degree of stability over the humidity change. Compared with pure PPy/α-NS−, the selectivity ratio of acetone/acetic acid response of PPy/α-NS−/PMMA blend with a PMMA/PPy weight ratio of 3.0 was ca. 3.9 times higher. The film was found to be insensitive to moisture unless the relative humidity (RH) was lower than 20% RH in which the selectivity ratio of acetone/acetic acid response was enhanced. The time required to reach the equilibrium for acetone exposure was found to increase slightly with increasing humidity. |
| |
| Keywords: | Conductive polypyrrole Poly(methylmethacrylate) Flammable chemical sensor Blends Selectivity Acetone Acetic acid Lacquer |
| 本文献已被 ScienceDirect PubMed 等数据库收录！ |
|
