A continuum model for the dynamics of flow‐induced crystallization

Atomistic simulation of crystallization of a polyethylene melt in steady uniaxial extension

“…Since the direct experimental observations in 1960s of flowinduced crystalline (FIC) phases occurring in many polymeric materials under certain conditions [3,4], numerous theoretical and experimental research efforts [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20] have been directed over the past several decades to understand the crystallization process and the resulting structure. It is generally known that the kinetics of nucleation and crystal-growth, the FIC morphology, and its stability, are extremely sensitive to experimental conditions (e.g.…”

Development and Validation of a Recoverable Strain-Based Model for Flow-Induced Crystallization of Polymers

“…Examples of the structure determining parameters include the macroscopic strain, [3] the Cauchy stress, [4] the conformation of molecules, [5,6] or a phenomenological molecular deformation factor that influences the induction time. [7,8] A first shortcoming of these models is that they generally only result in the overall degree of crystallinity and do not provide information on the final crystalline structure.…”

Continuum model for the simulation of fiber spinning, with quiescent and flow-induced crystallization

“…The final thermodynamic driving force is similar to that originally derived by Flory [43], but guarantees that the influence of the chain configuration reduces to zero provided the chain configuration is identical to the equilibrium configuration. Compared to previous thermodynamic analyses of FIC [43,44], it is convenient to consider a configuration tensor of the amorphous part of the chain rather than to consider a configuration tensor for the entire polymer chain, i.e., amorphous plus crystalline parts [44]. For this reason a term describing the change in chain configuration due to crystallization is incorporated into the evolution equation of the chain configuration of the amorphous part of the chain, see Eq.…”