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@INPROCEEDINGS{Park:858755,
      author       = {Park, Gunwoo and Ianniruberto, G.},
      title        = {{E}xploring {S}hear {T}hickening of {T}elechelic
                      {A}ssociating {P}olymers through {S}tochastic {S}imulations},
      reportid     = {FZJ-2018-07600},
      year         = {2018},
      abstract     = {Hydrophobically modified exthoxylated urethane (HEUR) is
                      one of the most popular examples of telechelic associating
                      polymer. In a certain range of HEUR concentration in aqueous
                      solution, (i) linear viscoelasticity follows a
                      single-Maxwellian behavior with a characteristic time
                      controlled by the network relaxation due to
                      association/dissociation kinetics. In simple shear flows,
                      HEUR systems often (ii) exhibit strain hardening in the
                      transient startup when the shear rate exceeds the reciprocal
                      relaxation time, and (iii) at steady state deviate from the
                      Cox-Merz rule, deviations including (iv) a shear-thickening
                      phenomenon. Recently, Park and Ianniruberto [1] suggested a
                      new stochastic simulation to describe the complex
                      rheological behavior listed in (i-iv). The results indicate
                      that finite extensibility effects are mostly responsible for
                      the strain hardening, while deviations from the Cox-Merz
                      rule are due to the persistence of bridge chains. However,
                      the detailed mechanism behind the shear thickening is still
                      unclear. In this study, we show additional observables by
                      using the same simulation method for a better understanding
                      of the shear-thickening phenomenon. Furthermore, we extend
                      the range of the parameter space explored in [1] by
                      examining larger (and more reasonable) values of the ratio
                      between the loop dissociation time and the Brownian
                      diffusion time of flower-like micelles. [1] G. W. Park and
                      G. Ianniruberto, J. Rheol. 61, 1293 (2017)},
      month         = {Apr},
      date          = {2018-04-17},
      organization  = {Annual European Rheology Conference
                       2018, Sorrento (Italy), 17 Apr 2018 -
                       20 Apr 2018},
      subtyp        = {After Call},
      cin          = {ICS-3},
      cid          = {I:(DE-Juel1)ICS-3-20110106},
      pnm          = {551 - Functional Macromolecules and Complexes (POF3-551) /
                      SFB 985 B06 - Kontinuierliche Trennung und Aufkonzentrierung
                      von Mikrogelen (B06) (221475706)},
      pid          = {G:(DE-HGF)POF3-551 / G:(GEPRIS)221475706},
      typ          = {PUB:(DE-HGF)6},
      url          = {https://juser.fz-juelich.de/record/858755},
}