The induction period for the onset of crystallization was determined in poly(ethylene terephthalate) in the presence and absence of small metallic particles. Two kinds of substrates were used: single microcrystals “transplanted” from the water‐soluble inorganic polymer (NaPO3)x and powders of the same metals (Au, Pt, and Ir). The nucleating activity ϕ of the substrates was determined on the basis of classical nucleation theory. Values of ϕ obtained for PET are compared with the corresponding values in the (NaPO3)x melt and with theoretical concepts.
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Gutzow et al. (1978) studied this question.
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