caa a22 4500 465814271 CHVBK 20180323112123.0 cr unu---uuuuu 170327e19900901xx s 000 0 eng 10.1007/BF01376787 doi (NATIONALLICENCE)springer-10.1007/BF01376787 Larson R. AT&T Bell Laboratories, Room GE-320, 600 Mountain Avenue, 07974, Murray Hill, NJ, USA aut The unraveling of a polymer chain in a strong extensional flow [Elektronische Daten] [R. Larson] By assuming that in a strong extensional flow a polymer molecule in dilute solution is quickly driven into a folded or kinked state in which drag and entropic elastic forces dominate over the Brownian force, we derive "kink dynamics” equations that describe the unraveling of the molecule in the extensional flow. Solving these equations numerically, we find that although the ends of the chain move, on average, affinely in the flow field until the chain is unfolded to about 1/3 of its fully extended length, large viscous stresses are produced because the solvent must flow around nonextending strands of polymer that lie between neighboring kinks. These predictions are compared with available experimental data and with other theoretical models. Steinkopff, 1990 C oil-stretch t ransition nationallicence k ink dynamics nationallicence e xtensional f low nationallicence Rheologica Acta Steinkopff-Verlag 29/5(1990-09-01), 371-384 0035-4511 29:5<371 1990 29 397 https://doi.org/10.1007/BF01376787 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF01376787 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Larson R. AT&T Bell Laboratories, Room GE-320, 600 Mountain Avenue, 07974, Murray Hill, NJ, USA aut NATIONALLICENCE 773 0- Rheologica Acta Steinkopff-Verlag 29/5(1990-09-01), 371-384 0035-4511 29:5<371 1990 29 397 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer