Thermal gradient effect on the dynamical behavior of nanoparticles observed using X-ray photon correlation spectroscopy

Taiki Hoshino, Daiki Murakami, Kiminori Ito, Yoshihito Tanaka, Sono Sasaki, Masaki Takata, Hiroshi Jinnai, Atsushi Takahara

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

The effects of a thermal gradient on the dynamical behavior of nanoparticles dispersed in a polymer matrix were studied using X-ray photon correlation spectroscopy. Polystyrene (PS)-grafted silica nanoparticles (SiNPs-PS), which are nanoparticles dispersed in a PS matrix controlled at temperatures above the glass transition temperature, were used in this study. Anisotropic motions of the SiNPs-PS were observed when the sample was kept in a conventional capillary tube, whereas isotropic motion was observed when the sample was kept in a newly designed cell with a low thermal flow, demonstrating the importance of the thermal gradient on the dynamical behavior of the SiNPs-PS.

Original languageEnglish
Pages (from-to)94-99
Number of pages6
JournalPolymer Journal
Volume45
Issue number1
DOIs
Publication statusPublished - 2013 Jan 1
Externally publishedYes

Keywords

  • X-ray photon correlation spectroscopy
  • polymer-grafted nanoparticle
  • thermal gradient

ASJC Scopus subject areas

  • Polymers and Plastics
  • Materials Chemistry

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