Open AccessCombined measurement of X‐ray photon correlation spectroscopy and diffracted X‐ray tracking using pink beam X‐rays
Author(s) -
Shinohara Yuya,
Watanabe Akira,
Kishimoto Hiroyuki,
Amemiya Yoshiyuki
Publication year - 2013
Publication title -
journal of synchrotron radiation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.172
H-Index - 99
ISSN - 1600-5775
DOI - 10.1107/s090904951301844x
Subject(s) - dynamic light scattering , styrene butadiene , diffraction , scattering , physics , spectroscopy , materials science , carbon black , optics , tracking (education) , microrheology , speckle pattern , rotational diffusion , small angle x ray scattering , molecular physics , natural rubber , nuclear magnetic resonance , nanoparticle , styrene , nanotechnology , rheology , polymer , composite material , anisotropy , psychology , pedagogy , quantum mechanics , copolymer
Combined X‐ray photon correlation spectroscopy (XPCS) and diffracted X‐ray tracking (DXT) measurements of carbon‐black nanocrystals embedded in styrene–butadiene rubber were performed. From the intensity fluctuation of speckle patterns in a small‐angle scattering region (XPCS), dynamical information relating to the translational motion can be obtained, and the rotational motion is observed through the changes in the positions of DXT diffraction spots. Graphitized carbon‐black nanocrystals in unvulcanized styrene–butadiene rubber showed an apparent discrepancy between their translational and rotational motions; this result seems to support a stress‐relaxation model for the origin of super‐diffusive particle motion that is widely observed in nanocolloidal systems. Combined measurements using these two techniques will give new insights into nanoscopic dynamics, and will be useful as a microrheology technique.