Crystallization of Polymers in a Temperature Gradient
In the paper we summarize the results of modeling and experimental studies of polymer crystallization in a temperature gradient. The crystallization of isotactic polypropylene and poly(methylene oxide) in a temperature gradient was investigated by means of light microscopy. The structure of gradient crystallized samples was studied by AFM techniques. The modeling involved the application of the probability theory to describe the overall crystallization kinetics of polymers in a temperature gradient. Computer simulation of spherulite crystallization was also conducted to verify the mathematical model and to visualize the gradient crystallized spherulitic patterns. A good agreement between the theoretical predictions and the experimental results was obtained.
Ewa PIORKOWSKA, Andrzej PAWLAK, Jean-Paul CHAPEL, Radoslaw NOWACKI
crystallization, temperature gradient, isotactic polypropylene, poly(methylene oxide).