Tunable, Self-curing Polymers for the Forensic Collection of Latent Signatures from Within Porous Materials
MetadataShow full item record
"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."
This article appeared in Homeland Security Affairs (May 2012), supplement 5, article 5
RightsThis publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.
Showing items related by title, author, creator and subject.
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 ...
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 ...