title: Dislocation-controlled perforated layer phase in a PEO- b-PS diblock copolymer.
abstract: 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.
authors: Maurice Morton Institute and Department of Polymer Science, The University of Akron, Akron, Ohio 44325-3909, USA.
authors: L
authors: L
authors: Zhu
authors: P
authors: P
authors: Huang
authors: S Z
authors: SZ
authors: Cheng
authors: Q
authors: Q
authors: Ge
authors: R P
authors: RP
authors: Quirk
authors: E L
authors: EL
authors: Thomas
authors: B
authors: B
authors: Lotz
authors: J C
authors: JC
authors: Wittmann
authors: B S
authors: BS
authors: Hsiao
authors: F
authors: F
authors: Yeh
authors: L
authors: L
authors: Liu