Accession Number:

ADA141531

Title:

Poly(ethylene maleate) - Cyclopentadiene: A Model Reactive Polymer-Vapor System for Evaluation of a SAW (Surface Acoustic Wave) Microsensor

Descriptive Note:

Progress rept. Oct 1982-Oct 1983

Corporate Author:

NAVAL RESEARCH LAB WASHINGTON DC

Personal Author(s):

Report Date:

1984-04-23

Pagination or Media Count:

33.0

Abstract:

A model reactive polymer vapor system based on the Diels Alder reaction has been used to verify the behavior of a surface acoustic wave SAW device chemical microsensor. Polyethylene maleate PEM was synthesized and characterized both spectroscopically and thermally for use as a selective receptor of cyclopentadiene vapor. The formation of a non reversible Diels Alder adduct between a PEM coating on a SAW delay line oscillator and the cyclopentadiene results in a film mass change which is easily measured by the SAW device. Physical absorption of non reacting solvent vapors can be distinguished from the cyclopentadiene interaction. The resulting cyclopentadiene dosimeter is capable of detecting 200 ppm of vapor in 1 minute. Significantly lower detection limits are possible if longer vapor integration periods are allowed.

Subject Categories:

  • Physical Chemistry
  • Polymer Chemistry
  • Test Facilities, Equipment and Methods
  • Chemical, Biological and Radiological Warfare

Distribution Statement:

APPROVED FOR PUBLIC RELEASE