Determination of Isothermal Crystallization Rate by DSC

The isothermal crystallization rate for polymers can be determined by DSC. The experimental procedure is given below, using polypropylene samples as an example. [Pg.78]

Place the sample in a sample vessel and dry it for about 1 day under a pressure of approximately 10 Pa. [Pg.78]

Place the sample container in the sample holder of the DSC apparatus and heat the sample at a certain rate to a temperature above its melting point, e.g. heat the sample at 80 °C min to 230 °C. [Pg.78]

Maintain the final temperature for 5 min or more in order to allow the sample to melt completely. [Pg.78]

Allow the sample to cool at the same rate as that of heating, to the estimated crystalline temperature (115-135 °C). [Pg.78]

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