[15p-318-1~11] CS.4 7. Code-sharing Session: Beam Technology and Nanofabrication

[15p-318-5] Phase separation of polymer blend with 4DCT using X-ray Talbot-Lau interferometer

〇Yanlin Wu^1,2, Hidekazu Takano^1,2, Gaku Murakami³, Atsushi Momose^1,2 (1.IMRAM, Tohoku Univ. ,, 2.JST-ERATO,, 3.Grad. School of Eng., Tohoku Univ.)

Keywords:X-ray Talbot interferometer, 4DCT, phase separation of polymer blend

Recently, researchers are keenly interested in "in-situ observation" technology with time resolution to observe the changes in phase separation of polymer blend with respect to heating treatment. In this work, we performed high-speed X-ray phase imaging and tomography with X-ray Talbot interferometer using synchrotron radiation enabling use of broad energy bandwidth x-rays.
The X-ray Talbot-Lau interferometer consists of a source grating (30 μm), a π/2 phase grating (4.5 μm) and an amplitude grating (5.3 μm) and high speed camera. The sample used in the experiments was PMMA/PS compound. The sample temperature can be maintained at desired temperature sequence, and corresponding CT scans were repeated to track the changes in the sample structures.