Dynamic shear responses of polymer-polymer interfaces

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

In multi-component soft matter, interface properties often play a key role in determining the properties of the overall system. The identification of the internal dynamic structures in non-equilibrium situations requires the interface rheology to be characterized. We have developed a method to quantify the rheological contribution of soft interfaces and evaluate the dynamic modulus of the interface. This method reveals that the dynamic shear responses of interfaces in bilayer systems comprising polypropylene and three different polyethylenes can be classified as having hardening and softening effects on the overall system: a interface between linear long polymers becomes more elastic than the component polymers, while large polydispersity or long-chain-branching of one component make the interface more viscous. We find that the chain lengths and architectures of the component polymers, rather than equilibrium immiscibility, play an essential role in determining the interface rheological properties.

Original languageEnglish
Pages (from-to)245-252
Number of pages8
JournalNihon Reoroji Gakkaishi
Volume40
Issue number5
DOIs
Publication statusPublished - Dec 1 2012

Fingerprint

Polymers
shear
Polyethylenes
polymers
Polypropylenes
Polydispersity
Rheology
Chain length
Hardening
Solubility
rheology
polypropylene
hardening
softening
polyethylenes
solubility

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Dynamic shear responses of polymer-polymer interfaces. / Nakayama, Yasuya; Kataoka, Kiyoyasu; Kajiwara, Toshihisa.

In: Nihon Reoroji Gakkaishi, Vol. 40, No. 5, 01.12.2012, p. 245-252.

Research output: Contribution to journalArticle

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