Structural analysis of telechelic polymer solution using dissipative particle dynamics simulations

研究成果: Article査読

6 被引用数 (Scopus)

抄録

A telechelic polymer is an amphiphilic polymer that can form micellar structures when dissolved in water. A telechelic polymer solution shows viscoelastic behaviour owing to the formation of characteristic networks, i.e. loops, bridges and dangling chains. For industrial purposes, telechelic polymers have many applications as thickening agents, such as in paints and cosmetics. Thus, it is desirable to predict and control the rheological properties of telechelic polymers. However, detailed studies at the molecular level have not yet been performed. In this study, I use the dissipative particle dynamics (DPD) method to investigate the relationship between the characteristic structural properties and the molecular structure in telechelic polymer solutions. I show that the morphology of telechelic polymer solutions depends on the concentration and chain length, the distribution of the end-to-end distance, the mean square end-to-end distance, the mean square radius of gyration and the time-averaged mean square displacement. Although an effect of entanglement is important for properties of polymer melts, the polymer chain composed of DPD particles cannot reproduce it. Therefore, I compare telechelic polymer solutions with and without the segmental repulsive potential (SRP), which can simulate the effect of entanglement in DPD simulations. The results indicate that it is necessary to include the SRP in DPD simulations to correctly analyse the behaviour of telechelic polymer solutions.

本文言語English
ページ(範囲)996-1001
ページ数6
ジャーナルMolecular Simulation
41
10-12
DOI
出版ステータスPublished - 2015 8 13
外部発表はい

ASJC Scopus subject areas

  • 化学 (全般)
  • 情報システム
  • モデリングとシミュレーション
  • 化学工学(全般)
  • 材料科学(全般)
  • 凝縮系物理学

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