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Polymer Physical Chemistry Lab
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A lab that studies the viscoelasticity and birefringence of polymers.
AboutAbout the lab
Studying the viscoelasticity and birefringence of polymers.
The Polymer Physical Chemistry Lab is part of the Department of Macromolecular Science, Graduate School of Science, The University of Osaka, and is also called the Matsumiya Lab.
The titles of published papers listed on the lab's website include works on polymer viscoelasticity, birefringence, and dielectric relaxation.
The faculty are Professor Yumi Matsumiya and Associate Professor Osamu Urakawa.
Key terms
- viscoelasticity
- The combination of a liquid-like tendency to flow and a solid-like tendency to return to the original shape.
- birefringence
- A phenomenon in which light passing through a material travels at different speeds depending on its direction of vibration.
- dielectric relaxation
- A phenomenon in which, when the direction of an electric field changes, the reorientation of molecules lags behind and catches up only after a delay.
NewsLab news
A master's student won an Excellent Poster Award at the Annual Meeting of the Japanese Society of Biorheology
A student won an Excellent Poster Presentation Award at the 2025 Autumn Research Meeting of the Society of Fiber Science and Technology, Japan
A student won an Excellent Poster Presentation Award at the 33rd Fall Meeting of the Japan Society of Polymer Processing
A student won an Excellent Poster Presentation Award at the 74th Symposium on Macromolecules
A student won an Excellent Poster Presentation Award at the 73rd Symposium on Rheology
ResearchResearch themes
The titles of published papers mention materials such as gels, ionic liquids, rubber, and cellulose nanocrystals. Studies on viscoelasticity, birefringence, and dielectric relaxation also appear in the paper list on the website.
View More ↗MembersFaculty
Members of the Polymer Physical Chemistry Lab include faculty, researchers, doctoral, master's, and undergraduate students, and secretaries.As of 2026
- ProfessorYumi Matsumiya
- Associate ProfessorOsamu Urakawa
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “Capillary rheometer 2” Cjp24 / CC BY-SA 4.0 (cropped)
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