Advanced search×

Stress relaxation in entangled polymer melts.

Ji-Xuan Hou, Carsten Svaneborg, Ralf Everaers, and Gary S Grest

Phys Rev Lett 105(6):068301 (2010) PMID 20868018

We present an extensive set of simulation results for the stress relaxation in equilibrium and step-strained bead-spring polymer melts. The data allow us to explore the chain dynamics and the shear relaxation modulus, G(t), into the plateau regime for chains with Z=40 entanglements and into the terminal relaxation regime for Z=10. Using the known (Rouse) mobility of unentangled chains and the melt entanglement length determined via the primitive path analysis of the microscopic topological state of our systems, we have performed parameter-free tests of several different tube models. We find excellent agreement for the Likhtman-McLeish theory using the double reptation approximation for constraint release, if we remove the contribution of high-frequency modes to contour length fluctuations of the primitive chain.

Version: za2963e q8za3 q8zb2 q8zcd q8zd5 q8ze0 q8zf6 q8zgb

Similar articles you may find interesting…

  1. Towards quantitative classification of folded proteins in terms of elementary functions.
    Shuangwei Hu, Andrei Krokhotin, ... Xubiao Peng

    Phys Rev E Stat Nonlin Soft Matter Phys 83(4-1):041907 (2011) PMID 21599201

  2. A distributed call admission control scheme for QoS provisioning in OFDMA system
    Chao Xue, Wenjun Xu, ... Kai Niu

    Audio, Transactions of the IRE Professional... (2011)

    We propose a distributed call admission control scheme for multiservice OFDMA system. In our proposed call admission control (CAC) scheme, a cell dynamically adjusts optimal new call and handoff acceptance ratios by three steps. First, exchange numbers of calls in handoff area with its adjacent cell...
  3. Proposed all-versus-nothing violation of local realism in the Kitaev spin-lattice model
    Ming-Guang Hu, Dong-Ling Deng, and Jing-Ling Chen

    Audio, Transactions of the IRE Professional Group on (2008)

    We investigate the nonlocal property of the fractional statistics in Kitaev's Toric code model. To this end, we construct the Greenberger-Horne-Zeilinger Paradox which builds a direct conflict between the statistics and local Realism. It turns out that the fractional statistics in the model is purel...
    View PDF