Analytical Techniques in Polymer Stability Studies

METHODOLOGY AND ANALYTICAL TECHNIQUES IN POLYMER STABILITY STUDIES 

When estimating the remaining service life of a polymer material for a particular application, the limiting value should be established of some material property such as tensile strength, elongation at break, electrical conductivity, permeability to low molar mass compounds, the average polymerization degree, etc., at which the polymer does not fail. 

The concept of a measurement of an induction period is based upon determination of critical time of the reaction progress that leads to the catastrophic change of the useful properties of the material. This may be demonstrated on the 

A very fast testing of polymer stability is based on non-isothermal experiments (DSC, chemiluminescence) where the whole plot of the parameter followed may be visualized over a large temperature interval. The transfer of non-isothermal data to isothermal induction times involves a variety of more or less sophisticated approaches such as published in Ref. [8] or discussed later. 

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Methodology and Analytical Techniques in Polymer Stability Studies 461... 

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