X-ray photon correlation spectroscopy of silica particles grafted with polymer brush in polystyrene matrix

Taiki Hoshino, Moriya Kikuchi, Daiki Murakami, Koji Mitamura, Yoshiko Harada, Kiminori Ito, Yoshihito Tanaka, Sono Sasaki, Masaki Takata, Atsushi Takahara

研究成果: Article査読

5 被引用数 (Scopus)

抄録

X-ray photon correlation spectroscopy system was setup at SPring-8, BL19LXU, and the partial coherence scattering data from the silica particles grafted with polymer brush in polystyrene matrix were measured. Firstly, the static speckle patterns were checked. Below the glass transition temperature of polystyrene (Tg), speckles were clearly observed, on the other hand, above Tg, the scattering patterns became smooth and speckles were hardly observed. These variances of the speckle patterns result from the particle motion. Secondly, from the time variance of the speckle data, time autocorrelation functions g2(q,t) are calculated. While the flat behaviour of g2(q,t) without relaxation were observed below T g, the relaxation behavior with relaxation time∼10 0-101 were observed above Tg

本文言語English
論文番号012020
ジャーナルJournal of Physics: Conference Series
272
1
DOI
出版ステータスPublished - 2011
外部発表はい

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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