Modeling induction period of polymer crystallization

Detailed analysis of the induction period of polymer crystallization by depolarized light scattering.

In order to clarify the structure formation processes in the induction period of polymer crystallization the annealing time dependence of depolarized light-scattering (DPLS) intensities has been investigated as a function of crystallization temperature for poly(ethylene terephthalate), poly(ethylene naphthalate), syndiotactic polystyrene, and isotactic polystyrene. It is found that the inductio...

Title Detailed analysis of the induction period of polymer crystallization by depolarized light scattering

Online Polymer Crystallization Experiment

An architecture for online remote operation of a polymer crystallization experiment was refined, beta tested in actual use conditions, and extended based on feedback from those tests. In addition, an application for graphically simulating macroscopic crystal spherulite growth was developed for use as an educational tool. Finally, the experiment was used in the design process for modifying the g...

Continuum theory of polymer crystallization.

We present a kinetic model of crystal growth of polymers of finite molecular weight. Experiments help to classify polymer crystallization broadly into two kinetic regimes. One is observed in melts or in high molar mass polymer solutions and is dominated by nucleation control with G approximately exp(1/TDeltaT), where G is the growth rate and DeltaT is the supercooling. The other is observed in ...

Modelling of Polymer Crystallization in Temperature Fields

This paper is devoted to the mathematical modelling of polymer crystallization processes in a bounded region under heat transfer conditions, i.e. in time-dependent temperature elds. A stochastic model in a general setup is developed based on the theory of marked point processes, and a hybrid model on a macroscopic scale is derived using expected values. The stochastic modelling part is suppleme...