Accession Number:

AD0671527

Title:

ON THE USE OF PHOSPHORESCENCE QUENCHING FOR DETERMINING PERMEABILITIES OF POLYMERIC FILMS TO GASES,

Descriptive Note:

Corporate Author:

AEROSPACE CORP EL SEGUNDO CALIF LAB OPERATIONS

Personal Author(s):

Report Date:

1968-05-01

Pagination or Media Count:

16.0

Abstract:

By measuring the lifetime of the phosphorescence of an additive in a polymeric film as a function of the ambient pressure of a quenching gas, it is possible to calculate the permeability of the polymer to the quenching gas. The mathematical analysis is based upon the well-known steady-state diffusional quenching theory. From the oxygen quenching of the phosphorescence of naphthalene additive, a permeability of polymethylmethacrylate to oxygen of 1.1 plus or minus 0.2 x 0.0001 sq.cm.sec.mole1mm was calculated. Author

Subject Categories:

  • Plastics
  • Test Facilities, Equipment and Methods

Distribution Statement:

APPROVED FOR PUBLIC RELEASE