Abstract
The morphology and lateral growth rate of isotactic polybutene-1 (it-PB1) tetragonal crystals have been investigated for crystallization from the melt over a wide range of crystallization temperature from 50 to 110 °C. The morphology of it-PB1 tetragonal crystals is rounded shape at crystallization temperatures lower than 85 °C, while lamellar single crystals possess faceted morphology at higher crystallization temperatures; the kinetic roughening transition occurs around 85 °C. Regime II growth mode on faceted growth fronts does not work below 85 °C, since the growth faces are rough; the morphology is indicative of regime III growth on rough surfaces. However, the growth rate shows single temperature dependence derived from the nucleation theory; it does not present regime II-III transition. Possible mechanisms for the crystal growth of it-PB1 tetragonal phase are discussed.
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Yamashita, M., Takahashi, T. Kinetic Roughening Transition of isotactic Polybutene-1 Tetragonal Crystals: Disagreement between Morphology and Growth Kinetics. Polym J 40, 1025–1030 (2008). https://doi.org/10.1295/polymj.PJ2007209
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DOI: https://doi.org/10.1295/polymj.PJ2007209
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