Titelanzeige
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Schmalz, Holger (Autor)
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Böker, Alexander (Autor)
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Lange, Ronald (Autor)
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Krausch, Georg (Autor)
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Abetz, Volker (Autor)
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Titel: |
Synthesis and properties of ABA and ABC triblock copolymers with glassy (A), elastomeric (B), and crystalline (C) blocks
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Quelle: |
Macromolecules. Bd. 34. H. 25. Washington, DC : Soc. S. 8720 - 8729 |
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Erscheinungsjahr: |
2001 |
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ISBN / ISSN: |
1520-5835 ; 0024-9297 |
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URL der Originalveröffentlichung |
doi:10.1021/ma010875d
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Dokumentart: |
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Zeitschriftenaufsatz |  |
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Sprache: |
Englisch |
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Open Access: |
— |
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Person der Universität: |
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Einrichtung: |
Universitätsleitung |
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DDC-Sachgruppe: |
Physik |
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ID: |
53585  |
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Hinweis: |
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Abstract: |
We describe the synthesis, characterization, and properties of polystyrene-block-poly(ethylene-alt-propylene)-block-polyethylene (PS-b-PEP-b-PE) and polystyrene-block-poly(ethylene-alt-propylene)-block-polystyrene (PS-b-PEP-b-PS) triblock copolymers. Morphological investigations using TEM, SEM, and SFM reveal for the PS-b-PEP-b-PE triblock copolymers a morphology consisting of PS cylinders and PE crystallites within a matrix of the PEP block, whereas the PS-b-PEP-b-PS triblock copolymer shows interconnected, distorted PS cylinders in the PEP matrix. Mechanical characterization of these triblock copolymers demonstrated that for small strains the PS-b-PEP-b-PE triblock copolymers exhibit the aimed smaller plastic deformations, i.e. better elastic properties, compared to the polystyrene-based ABA type thermoplastic elastomer. However, at high strains the PS-b-PEP-b-PS triblock copolymer shows a significantly better elastic recovery. The high plastic set at high elongations in PS-b-PEP-b-PE triblock copolymers is attributed to the weaker resistance of the PE crystallites compared to amorphous PS domains in the PS-b-PEP-b-PS triblock copolymer. |
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Verfügbarkeit prüfen: |
Rechercheportal Mainz: 1520-5835/0024-9297
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KatalogPortal Mainz (inklusive FB 06): 1520-5835/0024-9297 |
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Elektronische Zeitschriftenbibliothek (EZB): 1520-5835 oder 0024-9297
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