Reactive Membrane Barriers for Containment of Subsurface Contamination

Arnold, William A. ; Cussler, Edward L.

University of Minnesota

关键词: Corrosion;    Membranes;    Polymers;    37 Inorganic, Organic, Physical And Analytical Chemistry;    Containment;   

DOI  :  10.2172/839365
RP-ID  :  EMSP-86800--2003
RP-ID  :  FG07-02ER63509
RP-ID  :  839365

美国|英语

来源: UNT Digital Library

【 摘 要 】

This report summarizes work after fifteen months of a three-year project. The project is part of a larger effort to improve barrier properties of any polymer by 10,000 times. This implies that any polymer barrier now good for a day will be made effective for a decade. We use two strategies to achieve these improvements. The first, primarily supported by the Air Force Office of Scientific Research, uses aligned impermeable flakes of mica, clay, and other materials to enhance barrier properties 10 to 100 times. The barrier works against all diffusing species. This strategy, which we are applying to make corrosion resistant paints, works both in the unsteady state and in the steady state. Our second strategy, supported by this grant, uses reagents within the barrier polymer to neutralize specific species. This strategy works only in the unsteady state, while the reagents last. It is extremely effective, however, sometimes achieving increases in barrier properties of 1000 times or more.