Orientational Cross-Correlation in Entangled Binary Blends in Primitive Chain Network Simulations

Yuichi Masubuchi, Yoshifumi Amamoto

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

It has been reported from the molecular dynamics simulation that the orientational cross-correlation (OCC) has a significant contribution to the relaxation modulus of polymers. Remarkably, the OCC contribution has been found to be universal with respect to the molecular weight and even to its distribution for unentangled polymers [ Cao; Likhtman Phys. Rev. Lett. 2010, 104, 207801 ]. In this study, the OCC in entangled bidisperse polymer melts was evaluated by multichain slip-link simulations. The obtained OCC was similar to that in monodisperse systems in its intensity. On the other hand, the time development reflected the motion of short and long chains, and consequently the universality was not observed when the molecular weights of two components are well-separated and the long chain fraction is small. Comparison to the results obtained by the other slip-link model suggests that the cross-correlation is induced by the force balance and the fluctuation at the entanglement.

Original languageEnglish
Pages (from-to)9258-9265
Number of pages8
JournalMacromolecules
Volume49
Issue number23
DOIs
Publication statusPublished - Dec 13 2016
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Organic Chemistry
  • Polymers and Plastics
  • Inorganic Chemistry
  • Materials Chemistry

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