Tunable, Self-curing Polymers for the Forensic Collection of Latent Signatures from Within Porous Materials

Download
Author
Chipuk, Joseph
Kendall, Kirby
Mazzitelli, Carolyn
Straight, Stephen
Reaves, Melissa
Chamberlin, Sara
Date
2012-05Metadata
Show full item recordAbstract
"Self-curing polysiloxane polymers have been developed for the forensic collection of latent signatures of explosives, organophosphates, and chemical warfare agent (CWA) degradation products. These polymeric materials penetrate the sample substrate as viscous liquids and subsequently harden to a semi-soft solid that can be peeled away from the substrate to extract signatures via the noncovalent interaction of the newly formed polymeric material with the analytes buried within the substrate. This paper discusses experiments aimed at altering the chemical and physical properties of the polysiloxane sampling materials to optimize signature recovery from porous substrates. The utility of this approach is demonstrated by the collection of target analytes from within concrete. The recovery of these signatures using the self curing polymeric formulations is compared to current operational sampling alternatives such as adhesive fingerprint lifters and swabs. Demonstration of the preparation, extraction, and analytical methods for the detection of the target analytes is also presented."
Description
This article appeared in Homeland Security Affairs (May 2012), supplement 5, article 5
Rights
The copyright of all articles published in Homeland Security Affairs rests with the author[s] of the articles. Any commercial use of Homeland Security Affairs or the articles published herein is expressly prohibited without the written consent of the copyright holder. Anyone can copy, distribute, or reuse these articles as long as the author and original source are properly cited.Related items
Showing items related by title, author, creator and subject.
-
A computational and experimental study of flush heat sources in liquids
Haukenes, Larry Olaf (Monterey, California. Naval Postgraduate School, 1990-06);A numerical investigation of two-dimensional natural convection flow and heat transfer from a substrate-mounted flush heat source immersed in a liquid-filled square enclosure was conducted. The study is relevant to direct ... -
Chemical method to create metal films on metal and ceramic substrates
Phillips, Jonathan (The United States of America, as represented by the Secretary of the Navy, Washington, DC (US), 2019-04-30);The disclosure provides a method for generating a metallic coating on a substrate using a mixture comprising a precursor compound typically of chromium oxide , a chemical agent typically comprising NHz, and an inert transport ... -
SUBSTRATE AND FEEDSTOCK FACTORS AFFECTING COLD SPRAY COATING ADHESION AND RELATED IMPACTS ON CORROSION
Mitchell, Jeffrey C. (Monterey, CA; Naval Postgraduate School, 2021-03);Cold spray technology has the potential to greatly reduce the effects of corrosion on susceptible materials. Lack of adhesion strength is one of the limitations currently preventing cold spray from becoming a dominant ...