Spontaneous β to α polymorphic transition occurs from pinpoint nuclei on the periphery of the growing β-spherulite of polypropylene at a high crystallisation temperature (βα-bifurcation of growth), and its relative occurrence frequency increased with rising temperature. This is accompanied by a simultaneous decrease in growth rate. The phenomenon of βα-bifurcation of growth was interpreted through secondary βα-nucleation and the necessary energetic conditions and temperature dependence of this have been discussed.
|Number of pages||17|
|Journal||Periodica Polytechnica Chemical Engineering|
|Publication status||Published - Jan 1 1990|
ASJC Scopus subject areas
- Chemical Engineering(all)