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Effect of Microdomain Structures on Mechanical Properties of Polystyrene-block-Polyethylenebutylene-block-Polystyrene Triblock Copolymer Films
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- UMEDA Hideo
- Department of Polymer Science and Engineering, Kyoto Institute of Technology
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- AIDA Sakae
- Department of Polymer Science and Engineering, Kyoto Institute of Technology
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- SAKURAI Shinichi
- Department of Polymer Science and Engineering, Kyoto Institute of Technology
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- KITAGAWA Yuichi
- Tuftec Development and Technology Department, Asahi Chemical Industry Co. Ltd.
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- SUDA Yoshikazu
- Tuftec Development and Technology Department, Asahi Chemical Industry Co. Ltd.
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- MASAMOTO Junzo
- Department of Polymer Science and Engineering, Kyoto Institute of Technology
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- NOMURA Shunji
- Department of Polymer Science and Engineering, Kyoto Institute of Technology
Bibliographic Information
- Other Title
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- スチレン-エチレンブチレン-スチレントリブロック共重合体フィルムの力学特性に与えるミクロ相分離構造の影響
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Description
We report here effects of microdomain structures on the mechanical properties of polystyrene-block-polyethylenebutylene-block-polystyrene (SEBS) triblock copolymers. Microdomain structures were analyzed by the small-angle X-ray scattering technique and the mechanical properties were evaluated by the viscoelastic measurements. Two kinds of SEBS samples were used, which have similar molecular weights but different compositions. One of them having φps (volume fraction of polystyrene) of 0.16 underwent transition from spherical to cylindrical morphology when an as-cast film from its heptane/methylene chloride (1/1 by volume) solution was annealed at 150°C which is above the glass transition temperature of PS (polystyrene). Another SEBS sample having φps = 0.54 exhibited lamellar ordering when an as-cast film was annealed at 150°C According to these structural transformation, mechanical properties changed. Especially, the storage moduli of the annealed films around 25°C increased twice as big as the as-cast films. This result correlates well with generation and development of continuity of the glassy PS microdomains in SEBS16 and SEBS53, respectively.
Journal
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- Nihon Reoroji Gakkaishi(Journal of the Society of Rheology, Japan)
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Nihon Reoroji Gakkaishi(Journal of the Society of Rheology, Japan) 25 (4), 217-220, 1997
The Society of Rheology, Japan
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Keywords
Details 詳細情報について
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- CRID
- 1390001205465101824
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- NII Article ID
- 130004661965
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- COI
- 1:CAS:528:DyaK1cXislWjtA%3D%3D
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- ISSN
- 03871533
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- Text Lang
- ja
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- Data Source
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- JaLC
- Crossref
- CiNii Articles
- OpenAIRE
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- Abstract License Flag
- Disallowed