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Spherulitic Crystallization from the Melt. I. Fractionation and Impurity Segregation and Their Influence on Crystalline Morphology
Abstract
A systematic study of impurity segregation in spherulitic crystallization is described. The experiments deal principally with high polymers, in which the role of ``impurities'' is fulfilled by stereoirregular molecules or by molecules of low molecular weight. It is shown that these species are rejected preferentially by growing crystals and that their diffusion plays a vital part in governing over-all morphology. In particular, openness of texture is related to the concentration of impurity present; and coarseness of texture, which is a measure of the ``diameters'' of crystalline fibers between which impurities become concentrated during crystallization, is determined by δ=D/G, where D is the diffusion coefficient in the melt and G is the radial growth rate of the spherulite. Results provide substantial support for a theory of spherulitic crystallization proposed by the authors.
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Citations
Cited by
Lloyd, D. R., Kinzer, K. E., & Tseng, H. S. (1990) · Journal of Membrane Science · doi:10.1016/s0376-7388(00)85130-3 · Cited by 687
Keller, A. (1968) · Reports on Progress in Physics · doi:10.1088/0034-4885/31/2/304 · Cited by 411
Plasticization of semicrystalline poly(l-lactide) with poly(propylene glycol)
Piorkowska, E., Kulinski, Z., Galeski, A., & Masirek, R. (2006) · Polymer · doi:10.1016/j.polymer.2006.03.115 · Cited by 301
Hoffman, J. D., Williams, G., & Passaglia, E. (1966) · Journal of Polymer Science Part C: Polymer Symposia · doi:10.1002/polc.5070140116 · Cited by 299
Pan, P., Zhao, L., Yang, J., & Inoue, Y. (2013) · Macromolecular Materials and Engineering · doi:10.1002/mame.201200006 · Cited by 30
Metadata
- Authors
- Keith, H. D., & Padden, F. J.
- Venue
- Journal of Applied Physics
- Publisher
- AIP Publishing
- Published
- 1964-04-01
- Volume
- 35
- Issue
- 4
- Pages
- 1270-1285
- ISSN
- 0021-8979 (ISSN-L)
- 1089-7550
- OpenAlex
- W1979352415
- Cited by
- 641
- References
- 0
- FWCI
- 26.63
- Type
- journal article
- Language
- en
- Open access
- closed
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- CoChat. (2026). Citation check: Spherulitic Crystallization from the Melt. I. Fractionation and Impurity Segregation and Their Influence on Crystalline Morphology. https://app.cochat.ai/papers/10.1063/1.1713606
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- Keith, H. D., & Padden, F. J. (1964). Spherulitic Crystallization from the Melt. I. Fractionation and Impurity Segregation and Their Influence on Crystalline Morphology. Journal of Applied Physics. https://doi.org/10.1063/1.1713606
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