Nucleation and Crystal Growth Lauritzen-Hofmann Theory

2 Nucleation and Crystal Growth Lauritzen-Hofmann Theory 

Isothermal crystallization kinetics data can be analyzed with a variety of models in order to quantify the energy barriers associated with the nucleation and crystal growth  

When the isothermal crystallization is determined by spherulitic growth experiments, the energy barrier determined by applying the LH model refers exclusively to secondary nucleation or crystal growth. Instead, when the inverse of half-crystallization time (1/t5q%) values obtained from DSC isothermal overall crystallization kinetic data is considered, both primary nucleation and crystal growth are considered. Therefore, the energetic parameters that we obtained after applying any classical kinetic crystallization theory to DSC data will include contributions from both processes. 

A(7) is a measure for crystal growth (G(7), from PLOM), or a measure for the overall crystallization kinetics (1/750%, from DSC). 

Ag is a crystallization rate constant (G for crystal growth or for the overall crystallization). 

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