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Published July 1, 1998 | public
Journal Article

Use of Compatible Polymer Blends To Fabricate Arrays of Carbon Black−Polymer Composite Vapor Detectors


Compatible blends of poly(vinyl acetate) and poly(methyl methacrylate) have been used to produce a series of electrically conducting carbon black composites whose resistance is sensitive to the nature and concentration of an analyte in the vapor phase. The dc electrical resistance response of the composites was found to be a nonlinear function of the mole fraction of poly(vinyl acetate) in the blend. These compatible blend composite detectors provided additional analyte discrimination information relative to a reference detector array that only contained composites formed using the pure polymer phases. The added discrimination power provided by the compatible blend detectors, and thus the added diversity of the enhanced detector array, was quantified through use of a statistical metric to assess the performance of detector arrays in various vapor classification tasks.

Additional Information

© 1998 American Chemical Society. Received for review November 12, 1997. Accepted March 19, 1998. Publication Date (Web): May 13, 1998. We thank NASA, the Army Research Office (Grants DAAH04-96-1-0048 and DAAG55-97-1-0187), and DARPA for support of this work. B.J.D. acknowledges the NSERC Canada for a graduate fellowship, and R.D.S. acknowledges the University of California Lawrence Livermore National Laboratory for support from its Professional Research and Teaching Leave program while at Caltech.

Additional details

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October 18, 2023