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Semi-crystalline polymers

Two phases or three? An overview and perspective

Journal of Thermal Analysis and Calorimetry
Author: R. Seyler
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Volatility rate by thermogravimetry

An ASTM interlaboratory study for ASTM international E2008

Journal of Thermal Analysis and Calorimetry
Authors: Q Kwok and R Seyler


ASTM Committee E37 on Thermal Measurements published a new test method 'Standard Test Method for Volatility Rate by Thermogravimetry' in June 1999 with the designation E 2008. This approach to assessing volatility utilizes an extension of the pinhole technology previously employed by E37 for vapor pressure determinations using differential scanning calorimetry (ASTM E 1782). After publication of the test method E 2008, an Interlaboratory Study was undertaken to develop a 'Precision and Bias' statement to be assigned with the test method. This paper provides some background data that supports the claim that E 2008 is generally insensitive to experimental conditions other than temperature. The Interlaboratory Study showing the statistical review is also discussed.

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