Transcrystallization of isotactic polypropylene — on polymer, metal, and metal‐oxide substrates — has been investigated by hot‐stage polarizing microscopy. A measure of the extent of transcrystallization was obtained from a count of spherulites per unit length of substrate, the linear nucleation density. Classical free‐energy models were used to interpret variations in linear nucleation densities, in which the degree of supercooling and surface‐energy expressions were emphasized.
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Louis Goldfarb (1980) studied this question.
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