Dislocation-controlled perforated layer phase in a PEO- b-PS diblock copolymer
Small angle x-ray analyses show that the shear-induced hexagonal perforated layer phase in a poly(ethylene oxide)- b-polystyrene diblock copolymer consists of trigonal (R3;m) twins and a hexagonal (P6(3)/mmc) structure, with trigonal twins being majority components. Transmission electron microscopy...
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| Veröffentlicht in: | Phys. Rev. Lett 2001-06, Vol.86 (26 Pt 1), p.6030-6033 |
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| container_end_page | 6033 |
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| container_issue | 26 Pt 1 |
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| container_title | Phys. Rev. Lett |
| container_volume | 86 |
| creator | Zhu, L Huang, P Cheng, S Z Ge, Q Quirk, R P Thomas, E L Lotz, B Wittmann, J C Hsiao, B S Yeh, F Liu, L |
| description | Small angle x-ray analyses show that the shear-induced hexagonal perforated layer phase in a poly(ethylene oxide)- b-polystyrene diblock copolymer consists of trigonal (R3;m) twins and a hexagonal (P6(3)/mmc) structure, with trigonal twins being majority components. Transmission electron microscopy reveals that the hexagonal structure is generated through sequential intrinsic stacking faults on the second layer from a previous edge dislocation line, while the trigonal twins are formed by successive intrinsic stacking faults on neighboring layers due to the plastic deformation under mechanical shear. |
| doi_str_mv | 10.1103/physrevlett.86.6030 |
| format | Article |
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| identifier | ISSN: 0031-9007 |
| ispartof | Phys. Rev. Lett, 2001-06, Vol.86 (26 Pt 1), p.6030-6033 |
| issn | 0031-9007 1079-7114 |
| language | eng |
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| source | American Physical Society Journals |
| subjects | COPOLYMERS DISLOCATIONS MATERIALS SCIENCE NATIONAL SYNCHROTRON LIGHT SOURCE PHASE STUDIES POLYETHYLENE GLYCOLS POLYSTYRENE PROCESS CONTROL |
| title | Dislocation-controlled perforated layer phase in a PEO- b-PS diblock copolymer |
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