| Project/Area Number |
26800221
|
|---|
| Research Category |
Grant-in-Aid for Young Scientists (B)
|
| Allocation Type | Multi-year Fund |
|---|
| Research Field |
Biological physics/Chemical physics/Soft matter physics
|
|---|
| Research Institution | Yamagata University |
|---|
Principal Investigator |
Sukumaran S. K. 山形大学, 大学院有機材料システム研究科, 准教授 (70598177)
|
|---|
| Project Period (FY) |
2014-04-01 – 2017-03-31
|
| Project Status |
Completed (Fiscal Year 2016)
|
| Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2015: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2014: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
|
|---|
| Keywords | Entanglements / Polymer Blends / Polymer Melts / Polymer Dynamics / Polymer Rheology / Polymer Solutions |
|---|
| Outline of Final Research Achievements |
Long polymer chains can entangle with each other. In the dense liquid state, entanglements strongly affect the physical properties. However, only some of the characteristics of entanglements have thus far been elucidated. From past research, we know that stiff polymers can entangle more easily than flexible polymers. We wanted to address a more difficult question: what happens when we blend a stiff polymer with a flexible polymer?
Experimentally, it is difficult to definitively answer this question because it is almost impossible to vary only the stiffness between two polymers. So, we used simulations and found that, in a blend, stiff polymers become more entangled and flexible polymers become less entangled. More interestingly, they had essentially the same tube diameter! Building on these results, we were able to further extend the tube theory of polymers and take another step in linking the macroscopic physical properties to the structure and dynamics of the polymer molecules.
|
