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Models flow-induced crystallization

Zuidema, H., Peters, G.W.M. and Meijer, H.E.H. (2002) Development and validation of a recoverable strain based model for flow-induced crystallization of polymers, Macromol. Theory Simul. 10(5), 447-460... [Pg.320]

A. K. Doufas, A. J. McHugh, and C. Miller, Simulation of Melt Spinning Including Flow-induced Crystallization. Part I. Model Development and Predictions, J. Non-Newt. Fluid Meek, 92, 27-66 (2000). [Pg.856]

Model including flow-induced crystallization in the blown film... [Pg.465]

Fig. 24 Schematic pictures of flow-induced crystallization from the polymer melt (a) for the random coil model (b) using the folded-chain fringed-micellar grain model... Fig. 24 Schematic pictures of flow-induced crystallization from the polymer melt (a) for the random coil model (b) using the folded-chain fringed-micellar grain model...
Coleman CJ, Tullock D, Phan-Thien N (1991) An effective boundary element method for inhomogeneous partial differential equations. Z Angew Math Phys 42 730-745 Coppola S, Grizzuiti N, Maffettone PL (2001) Microrheological modeling of flow-induced crystallization. Macromol 34 5030-5036... [Pg.165]

Curran DAS, Cross MM, Lewis BA (1980) Solution of parabolic differential equations by the boundary element method using discretization in time. Appl Math Model 4 398-400 Dai SC, Qi F, Tanner RI (2006) Strain and strain-rate formulation for flow-induced crystallization. Polym Eng Sci 46 659-669... [Pg.165]

Doufas AK, Dairanieh IS, McHugh AJ (1999) A continuum model for flow-induced crystallization of polymer melts. J Rheol 43 85-109 Doufas AK, McHugh AJ, Miller C (2000) Simulation of melt spinning including flow-induced crystallization. Part I. Model development an predictions. J Non-Newtonian Fluid Mech 92 27-66... [Pg.166]

Proc. 6th World Congr Chem Eng, PapllO. Melbourne Zheng R, Kennedy PK (2004) A model for post-flow induced crystallization general equation and predictions. J Rheol 48 823-842... [Pg.177]

Zheng R, Tanner RI, Lee Wo D, Fan XJ, Hadinata C, Costa FS, Kennedy PK, Zhu P, Edward G (2010) Modeling of flow-induced crystallization of colored polypropylene in injection molding. Korea-Australia Rheol J 22 151-162... [Pg.177]

Oriented Crystallization.—Hoffman " has developed a theory for the growth of fibrous crystals with extended-chain morphology i.e., the core fibril or shish which develops on flow-induced crystallization. An embryonic fibril connected by bundle nuclei is produced. End surfaces resulting from the repulsion of amorphous chains in the regions between the nuclei build up commutatively as the nuclei mature. Volume strain in each nuclei limit the diameter of the core fibril to 15—50 nm. The model leads to a set of extended chains crystallites of stable diameters interrupted by short and highly strained amorphous regions. [Pg.226]

Important topics in this area are the use of chaotic nfixing to improve compounding [221], and modeling that includes flow-induced crystallization during molding processes. [Pg.60]

Validity of Equation (13.8) was verified by computer simulation of spherulitic crystallization [85]. Figure 13.4a shows plots of conversion degree versus time for the case of isothermal crystallization (G = const) whereas Figure 13.4b illustrates the exemplary computer simulated spherulitc pattern. It has to be mentioned that the above described model can be also useful to some extent in the case of flow-induced crystallization with row nuclei. [Pg.386]

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