ISSN:
1435-1536
Keywords:
Key words Non-isothermal crystallization
;
transient nucleation
;
athermal nucleation
;
relaxation time
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
,
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Abstract In two recent papers [1, 2] a new model of non-isothermal crystallization kinetics has been proposed. We are discussing now the possibility of experimental determi-nation of material characteristics appearing in the model. These include relaxation time, τ, and athermal nucleation function, Bath. Two kinds of experiments are discussed: isothermal and non-isothermal, with constant cooling or heating rate. The following approach should be valid for polymers characterized by not too high crystallization rates, like polyethylene terephthalate (PET), polytrimethylene terephthalate (PTT, Corterra®), polypropylene and others. Preliminary experiments on isotactic polypropylene and polyvinylidene fluoride will illustrate possibilities of the suggested experimental procedures.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/s003960050297
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