Evaluation of Spherulitic Growth Rate

This scattering pattern has been theoretically calculated by Stein and Rhodes, and is given by [12] 

The time-resolved light scattering experiment was carried out to evaluate the spherulitic growth rate as a function of Tc. When is above the Tc,max 200 °C, where SPS crystallizes with a maximum rate, the crystallization was induced by the rapid temperature drop from 300°C to Tc (T-drop). On the other hand, when Tc is below Tc x, the amorphous samples, which were obtained by quenching the samples from 300 to 0°C, were heated up to Tc to be crystallized (T-jump). 

It should be noted that the time dependences of R t) and IJf) are written 

It was observed that the spherulites grow Unearly with time for all Tc. Calculating the growth rates G from the slope of the lines, it was found that G is increasing when Tc is lower than 200 °C however, G is decreasing when Tc is higher than 200 °C. This suggests that G is a convex function of Tc with the maximum near 200°C (Fig. 11.11). 

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