Abstract
Applying the technique of Brownian dynamics simulation, we have studied the fracture process of flexible polymer chains when they encounter an extensional flow field of transient character. For this purpose, a mathematical model was made of an experimental device used earlier by other authors to study fracture of polystyrene in dilute solution. The polymer/solvent system studied was a very dilute solution in theta conditions. The polymer molecule was modeled as a FENE bead-spring chain, including a modification to allow for chain fracture. The simulation results showed that the fracture yield depended strongly on flow rate and on molecular weight. We have characterized the molecularweight dependence of the critical flow rate which is necessary for fracture to occur. The distribution of the resulting fragments is interpreted in terms of the conformation of the chains prior to fracture.
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Keller A, Odell JA (1985) Colloid and Polymer Sci 263:181
Muller AJ, Odell JA, Keller A (1988) J Non-Newt Fluid Mech 30:99
Odell JA, Keller A, Muller A (1992) J Colloid and Polymer Sci 270:307
Cathey CA, Fuller GG (1990) J Non-Newt Fluid Mech 34:63
Lopez Cascales JJ, García de la Torre J (1991) J Chem Phys 95:9384
Lopez Cascales JJ, García de la Torre J (1992) J Chem Phys 97:4549
Wiest JM, Wedgewood LE, Byron Bird R (1989) J Chem Phys 90:587
Larson RG, Magda JJ (1989) Macromolecules 22:3004
Odell JA, Keller A, Rabin Y (1988) J Chem Phys 88:4022
Nguyen TQ, Kausch H-H (1988) J Non-Newt Fluid Mech 30:125
Nugyen TQ, Kausch H-H (1990) Macromolecules 23:5137
Reese BH, Zimm BH (1990) J Chem Phys (1990) 92:2650
Rabin Y (1988) J Chem Phys 86:5215
Rabin Y (1988) J Non-Newt Fluid Mech 30:119
Knudsen KD, Hernández Cifre JG, García de la Torre J (1996) Macromolecules 29, in press
Knudsen KD, Hernández Cifre JG, López Cascales JJ, Garcia de la Torre J (1995) Macromolecules 28:4660
Bird RB, Curtiss CF, Armstrong RC, Hassager O (1987) Dynamics of Polymeric Liquids. Vol 2. Kinetic Theory, Wiley, New York
Handbook of Chemistry and Physics (1972) CRC Press, Cleveland, Ohio
Schmidt M, Burchard W (1981) Macromolecules 14:210
Huber K, Bantle S, Lutz P, Burchard W (1985) Macromolecules 18:1461
Ermak DL, McCammon JA (1978) J Chem Phys 69:1352
Iniesta A, García de la Torre J (1990) J Chem Phys 92:2015
Yamakawa H (1970) J Chem Phys 53:436
Odell JA, Keller A (1986) J Polymer Sci 24:1889
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Knudsen, K.D., Hernández Cifre, J.G. & García de la Torre, J. Fracture of flexible polymer chains in dilute solution under transient extensional flow. Colloid Polym Sci 275, 1001–1009 (1997). https://doi.org/10.1007/s003960050178
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DOI: https://doi.org/10.1007/s003960050178