Journal ArticleDOI
Isothermal crystallization kinetics in a limited volume. A geometrical approach based on Evans' theory
TLDR
In this paper, a new theoretical approach of the isothermal crystallization of a thin polymer film is proposed, derived from Evans' theory, which is much more interesting because it makes it possible to calculate the transformed volume fraction anywhere in the film.Abstract:
A new theoretical approach of the isothermal crystallization of a thin polymer film is proposed. This model, derived from Evans' theory, is in very good agreement with a previous one, but is much more interesting because it makes it possible to calculate the transformed volume fraction anywhere in the film. The main effects of decreasing thickness are a slower average crystallization of the film and a decrease in the Avrami exponent caused by a slower crystallization of the polymer close to the surfaces.read more
Citations
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Journal ArticleDOI
Structure in Thin and Ultrathin Spin-Cast Polymer Films
Curtis W. Frank,Varsha Rao,M. M. Despotopoulou,Roger Fabian W. Pease,William D. Hinsberg,Robert D. Miller,John F. Rabolt +6 more
TL;DR: Crystallization of PD6S is substantially hindered in ultrathin films, in which a critical thickness of 150 angstroms is needed for crystalline morphology to exist and in which the rate of crystallization is initially slow but increases rapidly as the film approaches 500Angstroms in thickness.
Journal ArticleDOI
Kinetics of polymer crystallisation
TL;DR: In this paper, the effect of polymer blending on polymer crystallization is discussed on the basis of two fundamental factors: nucleation and spherulite growth, and it is demonstrated that non-isothermal crystallisation under varying cooling rates can be described and predicted through an integral method.
Journal ArticleDOI
Polymer crystallization in quasi-two dimensions. I. Experimental results
Günter Reiter,Jens-Uwe Sommer +1 more
TL;DR: In this paper, the authors used atomic force microscopy to investigate the patterns obtained by isothermal crystallization of quasi-2D monolayers of poly(ethylene oxide) adsorbed onto bare silicon wafers.
Journal ArticleDOI
Kinetics of Chain Organization in Ultrathin Poly(di-n-hexylsilane) Films†
TL;DR: In this article, the effect of film thickness on the organization kinetics of spin-cast polymer films was studied using poly(di-n-hexylsilane) and UV absorption spectroscopy.
Journal ArticleDOI
Critical assessment of overall crystallization kinetics theories and predictions
TL;DR: In this paper, the authors reviewed the widely applied approaches to the description of the conversion of melt into spherulites and critically assessed the possible reasons of discrepancies between the theoretical predictions and the experimental data.
References
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Journal ArticleDOI
Kinetics of Phase Change. I General Theory
TL;DR: In this paper, the theory of phase change is developed with the experimentally supported assumptions that the new phase is nucleated by germ nuclei which already exist in the old phase, and whose number can be altered by previous treatment.
Journal ArticleDOI
Kinetics of Phase Change. II Transformation‐Time Relations for Random Distribution of Nuclei
TL;DR: In this article, a relation between the actual transformed volume V and a related extended volume V1 ex is derived upon statistical considerations, and a rough approximation to this relation is shown to lead, under the proper conditions, to the empirical formula of Austin and Rickett.
Journal ArticleDOI
Granulation, Phase Change, and Microstructure Kinetics of Phase Change. III
TL;DR: In this paper, a comprehensive description of the phenomena of phase change may be summarized in Phase Change, Grain Number and Microstructure Formulas or Diagrams, giving, respectively, the transformed volume, grain, and microstructure densities as a function of time, temperature, and other variables.
Journal ArticleDOI
Kinetics of non-isothermal crystallization
TL;DR: In this article, non-isothermal kinetics of nucleation and its growth are derived by extending Avrami's equation and applied to DSC curves of crystallization obtained by cooling poly(ethylene terephthalate) at constant rates.