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Obscurant Dissemination

Award Information
Agency: Department of Defense
Branch: Army
Contract: DAAD1303P0067
Agency Tracking Number: A033-0154
Amount: $100,000.00
Phase: Phase I
Program: STTR
Solicitation Topic Code: N/A
Solicitation Number: N/A
Timeline
Solicitation Year: N/A
Award Year: 2003
Award Start Date (Proposal Award Date): N/A
Award End Date (Contract End Date): N/A
Small Business Information
3252 Holiday Court Suite 227
La Jolla, CA 92037
United States
DUNS: 969813278
HUBZone Owned: No
Woman Owned: No
Socially and Economically Disadvantaged: No
Principal Investigator
 Steven Oldenburg
 Senior Staff Manager
 (858) 638-0316
 oldenburg@seashelltech.com
Business Contact
 Sheldon Schultz
Title: President
Phone: (858) 638-0315
Email: stllc@aol.com
Research Institution
 UNIV. OF CALIFORNIA SAN DIEGO
 David Schultz
 
9500 Gilman Dr.
La Jolla, CA 92093-
United States

 (858) 822-2149
 Nonprofit College or University
Abstract

We have developed a cost-effective method of surface coating anisotropic obscurants that will improve powder dissemination of high aspect ratio particles. Interparticle binding forces are reduced by encapsulating the particles with a polymer shell thathas a thickness that can be precisely controlled between 1 and 20 nm. This simple, stable, and inexpensive encapsulation will dramatically decrease the van der Waals energy between the particle surfaces. The particle's surface energy can be furtherreduced by coating the polymer surface with specific functional groups that alter the surface chemisty, charge, and hydrophobicity of the particle. The proposed coating will result in a high extinction obscurant that has superior powder disseminationproperties while retaining compatibility with existing obscurant dissemination units. The shell layer also will reduce the flammability of the particle, decreases the environmental and human toxicity, and allow the particles to be packed at higherdensities.

* Information listed above is at the time of submission. *

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