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Polymer Molecular Theory Lab
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A lab that reads the properties of polymer chains at the molecular level from polymer solutions.
AboutAbout the lab
Learning the shape of polymer chains from the properties of solutions.
The Polymer Molecular Theory Lab experimentally determines the properties of polymer chains in solution from macroscopic properties such as viscosity, osmotic pressure, and scattered light intensity, and analyzes them based on polymer theory.
The lab obtains molecular-level information on chain stiffness and thickness, local conformation, branching, intermolecular interactions, and dynamics, and aims to establish a framework for interpreting, at the molecular level, how solution properties change with the combination of polymer and solvent.
Key terms
- Polymer
- A large molecule made of thousands or tens of thousands of atoms linked together.
- Molecular dynamics
- A method that uses computers to simulate the motion of individual molecules over time.
- Comb polymer
- A polymer with many side chains extending from the main chain like the teeth of a comb.
ResearchResearch themes
The lab advances research on the properties of polymer solutions from both experiment and theory, aiming to establish a framework for interpreting solution properties at the molecular level.
*Illustrative imageMolecular-level interpretation of polymer solution properties
The lab experimentally determines the properties of polymer chains from viscosity, osmotic pressure, and scattered light intensity, and analyzes their molecular weight dependence with polymer theory. This yields molecular-level information such as chain stiffness and thickness, branching, and intermolecular interactions.
*Illustrative imageNonionic water-soluble polymers
In aqueous solutions of poly(N-isopropylacrylamide) and poly(vinyl alcohol), which show characteristic phase behavior, the lab experimentally clarifies how differences in branching and end groups arising from polymerization conditions affect solution properties.
*Illustrative imageSolution properties of polymacromonomers
The lab has comprehensively clarified the relationship between chain structure and the dilute-solution properties of comb polymers with precisely controlled structures, obtained by polymerizing polymers that carry polymerizable end groups.
*Illustrative imageMolecular dynamics of aqueous polymer solutions
Using all-atom molecular dynamics simulations, the lab investigates how the temperature dependence of the interactions between polymer chains, and between repeating units and water molecules, in aqueous solution relates to the thermodynamic properties of the solution.
MembersFaculty
- ProfessorYo Nakamura
- Associate ProfessorDaichi Ida
- Assistant ProfessorAkiyuki Ryoki
VoicesStudent voices
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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: “Ubbelohde viscometer at Lab” Vis M / CC BY-SA 4.0 (cropped)
- Molecular-level interpretation of polymer solution properties: “LASER LIGHT SCATTERING INSTRUMENT IN THE OLD ROCKET LABORATORY ORL - NARA - 17467124” 作者不詳 / Public domain (cropped)
- Nonionic water-soluble polymers: “PNIPA” Quantyield / CC BY-SA 3.0 (cropped)
- Solution properties of polymacromonomers: “Random” Shin72000 / CC0 (cropped)
- Molecular dynamics of aqueous polymer solutions: “Styrene-butadiene chain” Gmrozz / CC BY-SA 4.0 (cropped)
- Related lab (Polymer Materials Design Lab): “Brush Polymer Classifications Graphic” Nighthawk626 / CC0 (cropped)
- Related lab (Controlled Polymer Synthesis Lab): “CNT CPP” Duckhemist / CC BY-SA 4.0 (cropped)
- Related lab (Biofunctional Polymers Lab): “Supported Lipid Bilayer and Nanoparticles AFM” Yurko / CC BY-SA 3.0 (cropped)
- Related lab (Physical Chemistry of Materials Lab): “Magnetron detail” Schrauber5 / CC BY-SA 4.0 (cropped)
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