Strain‐Induced Density Fluctuations in Glassy Polymers
Deformation of glassy polymers induces plastic flow as a result of mechanical instability, ultimately leading to cavitation and fracture of the liquid. Thus, understanding the origin of such mechanical instability is crucial. Here, we demonstrate that strain deformation of polymeric glass is accompanied by marked shear-thinning behavior and leads to enhanced density fluctuations. These results are consistent with Furukawa and Tanaka's theory, which predicts that strain induces the self-amplification of the density fluctuations. Thus, we conclude that the enhancement results from the coupling between the velocity field and density fluctuations, stemming from the Furukawa and Tanaka theory, glassy polymer, small-angle X-ray scatteringstrong density dependence of viscosity.
Authors
- Shinya Yoshioka (ORCID: https://orcid.org/0000-0002-7347-2864)
- Akira Furukawa (ORCID: https://orcid.org/0000-0001-9364-2667)
- Tadashi Inoue (ORCID: https://orcid.org/0000-0002-9934-1299)
- Hirofumi Shimizu
- Shotaro Nishitsuji (ORCID: https://orcid.org/0000-0002-3551-9131)
- Mikihito Takenaka (ORCID: https://orcid.org/0000-0002-6803-048X)
- Shuhei Fujita (ORCID: https://orcid.org/0000-0001-5465-3515)
- Sumiaki Fujii
- Ryuta Izumi
Institutions
- Yamagata University (JP)
- Tokyo Institute of Technology (JP)
- Osaka Electro-Communication University (JP)
- Kyoto University (JP)
- Kyoto Bunkyo University (JP)
- SPring-8 (JP)
- The University of Osaka (JP)
Publication Details
- Journal
- Macromolecular Rapid Communications
- Published
- 2025-11-28
- DOI
- https://doi.org/10.1002/marc.202500696
- Citations
- 1
- Primary Topic
- Material Dynamics and Properties
- Type
- article
- Field-Weighted Citation Impact
- 0.52
Funders
- Ministry of Education, Culture, Sports, Science and Technology
- Japan Society for the Promotion of Science
- RIKEN