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ASTM

D3418-21

Standard Test Method for Transition Temperatures and Enthalpies of Fusion and Crystallization of Polymers by Differential Scanning Calorimetry

2021 Vol.08.02 (2022)

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ASTM Vol.08.02 (2022)

This test method covers determination of transition temperatures and enthalpies of fusion and crystallization of polymers by differential scanning calorimetry. NOTE 1: True heats of fusion are to be determined in conjunction with structure investigation, and frequently, specialized crystallization techniques are needed. This test method is applicable to polymers in granular form or to any fabricated shape from which it is possible to cut appropriate specimens. The normal operating temperature range is from the cryogenic region to 600°C. Certain equipment allows the temperature range to be extended. The values stated in SI units are the standard. NOTE 2: This test method does not apply to all types of polymers as written (see 6.8).

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