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An automated oxygen absorption instrument
Author(s) -
Krueger Robert A.
Publication year - 1973
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1973.070170801
Subject(s) - oxygen , tube (container) , polymer , absorption (acoustics) , materials science , analytical chemistry (journal) , atomic absorption spectroscopy , chemistry , chromatography , composite material , organic chemistry , physics , quantum mechanics
Oxygen absorption is a widely used test for measuring polymer stability and antioxidant effectiveness. Commonly, periodic measurements are made using a mercury buret to measure the rate at which oxygen is taken up by the polymer. We designed and built a safe, dependable apparatus that continuously monitors the reaction of a hydrocarbon polymer with oxygen. The instrument operates by recording the frequency with which small, known volumes of oxygen are introduced into the sample tube to maintain a preestablished pressure in the tube. No operator time is required during the test. The instrument readings are readily converted to standard oxygen absorption curves.