Oxidative induction time analysis (OIT, also known as oxidative stability) has found widespread use in the geosynthetic community as a quality control and finger-printing tool. The use of the test is primarily restricted to materials composed of polyolefin resins such as VLDPE and HDPE (typically used in the production of geomembranes).

How to Measure Oxidation Induction Time (OIT) And Oxidation Onset Temperature (OOT)? OIT is the time from the initial exposure to oxygen to the onset of exothermic decomposition at the isothermal temperature of the test. It gives a relative measure of the stability of the test material toward oxidation.

Apr 6, 2023 · When the specified temperature has been reached, the specimen is then held at that temperature until the oxidative reaction is displayed on the thermal curve. The OIT is the time interval from the start of the temperature program test to the onset of the oxidative reaction.

Oxidation induction time (OIT) is an isothermal measurement that determines how long it takes for oxidation to start at a defined temperature. Oxidation onset temperature (OOT) has a dynamic heating rate to determine the temperature when oxidation starts.

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Oxidative Induction Time (OIT) measured by Differential Scanning Calorimetry (DSC) on molten polymer samples is widely used in the plastics industry to assess the thermal stability of polyolefins. It is simple, it requires small samples and it is relatively fast.

Oxidative-Induction Temperature (dynamic OIT) or Oxidative-Onset Temperature (OOT) is a relative measure of the resistance of a (stabilized) material to oxidative decomposition. OIT) by means of differential scanning calorimetry (DSC) in standardized procedures.

induction times (OIT) is a valuable characterization test for assessing the long-term stabilities of polyolefin materials. Longer OIT values generally translate to improved long-term performance. The test is useful for the following types of applications: • Telecommunication cables • Geomembranes • Vapor barrier films • Tubes or pipes

Dec 15, 2000 · The measurement of OIT is one of the most practical and commonly used methods for obtaining information on polymer stability, antioxidant effectiveness, and the degree of degradation incurred during polymer processing.

Jan 1, 2003 · Mapping of the degradation of unaged PP plaques showed randomly distributed oxidation induction times (OIT), indicating random initiation presumably at polymerization catalyst residues. Contrary to this, hot-air oven aged PP plaques showed position related degradation.