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Spinodal-assisted crystallization in polymer melts | | Peter D. Olmsted
; Wilson C. K. Poon
; T. C. B. McLeish
; N. J. Terrill
; A. J. Ryan
; | | Date: |
2 Jun 1998 | | Journal: | Physical Review Letters 81 (1998) 373-376 | | Subject: | Soft Condensed Matter | cond-mat.soft | | Abstract: | Recent experiments in some polymer melts quenched below the melting temperature have reported spinodal kinetics in small-angle X ray scattering before the emergence of crystalline structure. To explain these observations we propose that the coupling between density and chain conformation induces a liquid-liquid binodal within the equilibrium liquid--crystalline solid coexistence region. A simple phenomenological theory is developed to illustrate this idea, and several experimentally testable consequences are discussed. Shear is shown to enhance the kinetic role of the hidden binodal. | | Source: | arXiv, cond-mat/9806024 | | Services: | Forum | Review | PDF | Favorites | |
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