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An apparatus for quantitative gas‐absorption measurements
Author(s) -
Shelton J. Reid,
McDonel E. T.
Publication year - 1959
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.1959.070010311
Subject(s) - natural rubber , materials science , vulcanization , composite material , volume (thermodynamics) , curing (chemistry) , polyethylene , absorption (acoustics) , aluminium , analytical chemistry (journal) , chemistry , thermodynamics , organic chemistry , physics
An apparatus for quantitative gas‐absorption measurements is described and illustrated with drawings and photograph. A commercially available aluminium block heating unit, adapted to accommodate glass sample tubes, is mounted in an octagonal frame. Gas burets and leveling bulbs are supported on the frame to provide an apparatus for measuring volume changes at a given pressure. Data on rate of heatup and temperature distribution within a sample tube are given. The apparatus has been used primarily for volumetric oxygen‐absorption measurements in studies related to the oxidation of rubber, but it is adaptable to studies involving other materials and other gaseous atmospheres at controlled temperatures. For example, studies have been made with polyethylene, epoxide coatings, and drying oils. The apparatus has also proved useful for curing polyurethanes under moisture‐free conditions and for the vulcanization of rubber in a nitrogen atmosphere.