2009 Fiscal Year Final Research Report
Molecular Study of Associating Polymer Rheology
| Project/Area Number |
19740259
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Biophysics/Chemical physics
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| Research Institution | Yamagata University (2008-2009)
Kyoto University (2007) |
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Principal Investigator |
INDEI Tsutomu Yamagata University, 大学院・理工学研究科, 研究支援員 (30420409)
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| Project Period (FY) |
2007 – 2009
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| Keywords | 高分子 / 液晶 |
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| Research Abstract |
Rheology of associating polymer systems was theoretically studied. (1) The influence of low-molecular-weight surfactants : It was shown that the peak height appeared in the zero-shear viscosity and the relaxation time strongly depends on the synergism in the mixed micelle formation. (2) Effect of the number of associative groups per chain : It was shown that if the average number of associative groups per chain in bound state is large, viscoelastic relaxation behavior is well described in terms of the Rouse model. (3) Effect of the junction structure : Due to the cooperativity effect of the association/dissociation processes, the longest relaxation regime was shown to deviate from the Maxwell behavior depending on the length of the junction zone.
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