2001 Fiscal Year Final Research Report Summary
Study of the dynamic structure of microphase separation by X-ray small angle scattering using the CCD type X-ray detector
| Project/Area Number |
12450004
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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 |
Applied materials science/Crystal engineering
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| Research Institution | The University of Tokyo |
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Principal Investigator |
AMEMIYA Yoshiyuki The University of Tokyo, Graduate School of Frontier Sciences, The University ot Tokyo, Professor (70151131)
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| Co-Investigator(Kenkyū-buntansha) |
OKITSU Kohei The University of Tokyo, Research Associate (50323506)
UEJI Yoshinori The University of Tokyo, Graduate School of Frontier Sciences, Research Associate (10312985)
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| Project Period (FY) |
2000 – 2001
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| Keywords | X-ray / SAXS / synchrotron radiation / time resolved / microphase separation / oscillatory shear / block copolymer / lamellar |
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| Research Abstract |
The orientation of lamellar structure in block copolymers behaves differently under oscillatory shear with different conditions. For example, the lamellar structure of polystyrene-polyisoprene di-block copolymer is orientated in either perpendicular or parallel or transverse under oscillatory shear, depending on its frequency and its amplitude and temperature. The orientation behavior is also dependent on time course of the oscillatory shear. If the underlying mechanism of this behavior is clarified, this behavior is tailored so that new mechanical properties can be designed. Therefore, it is important to investigate the relation of nano-scale structure (molecular structure) and oscillatory shear condition (frequency, temperature, strain ).
In this study, we have developed a high-sensitivity CCD X-ray detector which enables us to record time-resolved small-angle X-ray scattering patterns with a sub-second time resolution. Next, we have developed a shearing machine which may let an X-ray beam pass through with different three orthogonal directions while applying oscillatory shear to polymer sample. With the above apparatus combined, we have successfully observed the orientation behavior of the lamellar structure in block copolymer of polystyrene and polyisoprene under oscillatory shear with time-resolved small angle X-ray scattering technique using synchrotron radiation.
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Research Products
(24 results)
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[Book] X線分析の進歩2002
Author(s)
(分担著)平野馨一、沖津康平、百生敦、雨慶幸
Total Pages
386
Publisher
アグネ技術センター
Description
「研究成果報告書概要(和文)」より
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[Book] 構造解析2001
Author(s)
(分担著)雨宮慶幸
Total Pages
378
Publisher
丸善
Description
「研究成果報告書概要(和文)」より
