Journal ArticleDOI
Overall crystallization kinetics of thin polymer films. General theoretical approach. I. Volume nucleation
Noëlle Billon,Jean-Marc Haudin +1 more
TLDR
In this paper, a general theoretical approach of the overall crystallization kinetics of thin polymer films is developed, which makes it possible to calculate the evolution of the transformed volume fraction anywhere in the film, whatever the cooling conditions are.Abstract:
A general theoretical approach of the overall crystallization kinetics of thin polymer films is developed. This new model makes it possible to calculate the evolution of the transformed volume fraction anywhere in the film, whatever the cooling conditions are. In its isothermal limit this model is equivalent to previous approaches which have been well verified by a computer simulation. In conclusion, it is pointed out that both isothermal and anisothermal determinations of crystallization kinetic parameters are greatly dependent on the sample thickness.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 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.
Journal ArticleDOI
Crystalline morphology of polyamide-6 near planar surfaces
TL;DR: In this article, a model for the organization of lamellae and polyamide-6 chains in the discoids was presented for thin polyamide films, and it was shown that under uniaxial tension, the modulus and flow stress of the films increase with decreasing thickness, hence with increasing orientation.
Journal ArticleDOI
Confined crystallization phenomena in immiscible polymer blends with dispersed micro - and nanometer sized PA6 droplets, part 1: uncompatibilized PS/PA6, (PPE/PS)/PA6 and PPE/PA6 blends
TL;DR: In this article, the crystallization behavior of PA6, dispersed as droplets in various immiscible amorphous polymer matrices, is reported, characterized by several crystallization events at different, lowered crystallization temperatures.
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.
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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.