Numéro
J. Phys. IV France
Volume 03, Numéro C8, Décembre 1993
IX International Conference on Small Angle Scattering
Page(s) C8-451 - C8-454
DOI http://dx.doi.org/10.1051/jp4:1993893
IX International Conference on Small Angle Scattering

J. Phys. IV France 03 (1993) C8-451-C8-454

DOI: 10.1051/jp4:1993893

Ultra-small-angle X-ray scattering study of the structure of colloidal and polymeric systems

H. MATSUOKA1, Y. NAKATANI1, M. YAMAKAWA1 and N. ISE2

1  Department of Polymer Chemistry, Kyoto University, Kyoto 606-01, Japan
2  Fukui Research Laboratory, Rengo Co. Ltd., Jiyugaoka, Kanazu-cho, Sakai-gun, Fukui 919-06, Japan


Abstract
We have constructed the Bonse-Hart type Ultra-small-angle X-ray Scattering (USAXS) instrument to study large-scale density fluctuations in colloidal and polymer systems. Our USAXS instrument has very high small-angle resolution up to 8 micrometers. The USAXS curves from polymer latex dispersions at very low ionic strength showed clear Bragg peaks, indicating that the ordered structure of latex particles was formed even inside dispersions by the electrostatic interactions between the particles. The lattice system and lattice constant could be precisely estimated. The time evolution of the USAXS curve reflecting the ordered structure formation was also examined. The microdomain structure of polymer alloy systems and microcrystalline structure of polypropylene film were also investigated. The USAXS technique enables us to investigate submicron structures in various systems which could not be studied by other techniques



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