Interplay between chemical structure and elongational behavior of entangled polymers
| Project/Area Number |
15H03865
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Polymer/Textile materials
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| Research Institution | Kyoto University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
松宮 由実 京都大学, 化学研究所, 准教授 (00378853)
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥17,810,000 (Direct Cost: ¥13,700,000、Indirect Cost: ¥4,110,000)
Fiscal Year 2017: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2016: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2015: ¥11,050,000 (Direct Cost: ¥8,500,000、Indirect Cost: ¥2,550,000)
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| Keywords | 高分子メルト / 伸長挙動 / 歪み硬化 / 歪み軟化 / 摩擦減少 / 絡み合い / 伸長粘度 / 側鎖効果 / セグメント摩擦 |
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| Outline of Final Research Achievements |
Viscoelastic relaxation of polymers is insensitive to their chemical structure and thus universal under shear, but this universality vanishes under elongation. This study conducted elongational rheological measurements for model polymers having a polystyrene (PS) backbone but with various side groups at the para position of the phenyl group of PS, thereby investigating this breakdown of the universality. It turned out that a larger side group weakens the inter-chain orientational correlation to suppress reduction of the segmental friction of oriented/stretched chains (thereby breaking the universality) and that this friction reduction is not uniquely determine by the stress reflecting the chain conformation at each moment but exhibits retardation possibly due to retarded adjustment of orientation/stretch to the environment.
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Report
(4 results)
Research Products
(54 results)
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[Journal Article] Rheology of Nano-Cellulose Fiber Suspension2016
Author(s)
Yumi Matsumiya, Hiroshi Watanabe, Kentaro Abe, Yasuki Matsumura, Fumito Tani, Yasuo Kase, Shojiro Kikkawa, Yasushi Suzuki, and Nanase Ishii
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Journal Title
Nihon Reoroji Gakkaishi
Volume: 45
Issue: 1
Pages: 3-11
DOI
NAID
ISSN
0387-1533, 2186-4586
Related Report
Peer Reviewed
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[Presentation] Entanglement Relaxation in Binary Blends2016
Author(s)
H. Watanabe
Organizer
3rd INTERNATIONAL WORKSHOP The Michelin “Materials Science Chair” at ESPCI Paris, Multiscale Dynamics of Polymeric Materials
Place of Presentation
Paris (France)
Related Report
Int'l Joint Research / Invited
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