Abstract
The crystallization kinetics of the monodisperse n-alkane C98H198, growing as extended-chain lamellae from the melt, have been measured as part of a wider programme on these novel model systems for polymeric materials. Crystal growth rates decrease linearly, by a factor of 30, over the temperature range of 113.5–114.9°C, an interval which encompasses a significant change in habit from individual through parallel-stacked lamellae to a type of coarse spherulite. The data differ considerably in character from those reported previously for extended chain crystallization of n-C198H398 but are comparable to earlier studies of purified n-C94H190 and are sensibly linear with supercooling as proposed in Hoffman's theory of extended-chain crystallization.
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