Bulletin of the American Physical Society
APS March Meeting 2010
Volume 55, Number 2
Monday–Friday, March 15–19, 2010; Portland, Oregon
Session D18: Focus Session: Crystallization in Confined Geometry II
2:30 PM–5:18 PM,
Monday, March 15, 2010
Sponsoring Unit: DPOLY
Chair: Christopher Li, Drexel University
Abstract ID: BAPS.2010.MAR.D18.5
Abstract: D18.00005 : Reconsideration of Over-All Crystallization Behavior based on Avrami Equation.
3:18 PM–3:30 PM
Preview Abstract Abstract
(Tpkyo Institute of Technology)
It has been widely known that Kolmogorov-Johnson-Mehl-Avrami (KJMA) equation can express the time dependence of over-all crystallization. In general, KJMA Eq. has been induced on the assumption of sporadic nucleation with the constant nucleation rate or instantaneous nucleation with the constant nuclear density. However, actual nucleation behavior is clearly different from these assumptions, since the number of nuclei increases with time following the s-shaped curve with the limited number of nuclei. In general, the Avrami exponent has been observed to be non-integer number, since it should be integer number in theoretical sence. In this study, over-all crystallization behavior with two-dimensional growth for poly(ethylene succinate) was measured. The over-all crystallization behavior calculated with the actual experimental nucleation rate was completely coincided with the experimental over-all crystallization curve.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2010.MAR.D18.5
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