The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Heterogeneous surface nucleation influence the spherulite nucleation process changing sizes and distribution of spherulites. Computer simulation method reveals this influence in detail. Results make possible an identification of the surface nucleation and enable to assess its scale.
The influence of the sample edge on the spherulite crystallization is considered. The granularity and the time of crystallization change if the sample shape changes. All results are obtained using computer simulation program for real input crystallization parameters taken from experiment.
The traditional crystallization parameters growth rate and nucleation rate can be difficult to measure in direct way. They can be calculate instead using formulae, which combine these parameters with the crystallization time and the granularity. These formulae are presented in the paper. They were also verified experimentally and with computer simulation test.
It is shown that the experimental data contradicts the theoretical Turnbull-Fisher equation G(T) if the values of free activation energy αEA and αFG calculated with traditional method are applied. The correctly calculated values of these energies are about doubled, compared to the old values. The new values assure conformity of the G(T) equation with the experiment.
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.