Published in

American Institute of Physics, Applied Physics Letters, 10(123), 2023

DOI: 10.1063/5.0157359

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Direct observation of 890 ns dynamics of carbon black and polybutadiene in rubber materials using diffracted x-ray blinking

This paper was not found in any repository, but could be made available legally by the author.
This paper was not found in any repository, but could be made available legally by the author.

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Data provided by SHERPA/RoMEO

Abstract

Dynamic behavior in soft matter physics, biology, and nanoscience frequently occurs on submicrosecond timescales. Diffracted x-ray blinking (DXB) is a unique method that can provide a broad range of spatial scale information and is becoming an attractive tool for use at high repetition rate x-ray facilities. In this study, we performed DXB experiments with 890 ns time resolution at the European X-ray Free-Electron Laser Facility to obtain dynamic information about rubber samples that are typically used in automobile tires. Time-resolved scattering was simultaneously recorded for two samples that mainly consisted of carbon black (CB) and polybutadiene (PB). These samples contained either graphitized or non-graphitized CB and displayed significantly different dynamics. A clear interaction between CB and PB was observed, indicating that the mobility of PB was changed by the introduction of CB. Restricted polymer motion was observed in the q-range of 0.78–1.58 Å−1 regions. Our results suggest that the particle network can be flexibly controlled without impairing the mechanical strength of the rubber.