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- W3036735331 abstract "Thin films of polyethylene (PE) with high orientation have recently been prepared by “melt-drawing”. This process produces long crystalline lamellae normal to the draw direction and with the chain axis [00ℓ] parallel to the draw direction (Figure 1). Thin films were prepared from a 0.5% solution of high density PE (Marlex 6003, M w =2×l0 5 ) in xylene, which was drawn from a glass slide at 125°C. The films were annealed on glycerol at 125°C for two hours, then were placed on specially fabricated soft copper deformation grids. In-situ deformation was performed in a tensile deformation stage of a JE0L 100CX STEM. The initial gauge length was 0.5mm, with a strain rate of 0.1min −1 . Figure 1 shows a bright field (BF) CTEM image of an annealed film. Crystals properly oriented for diffraction appear black, while non-Bragg-oriented lamellar crystals are grey. The interlamellar zones (amorphous regions) appear as bright areas for underfocus conditions since innerpotential of the crystalline phase is approximately one volt larger than that of the amorphous phase. The bright white “ghosts” are diffraction images displaced by defocus from their corresponding main beam images in the direction of the appropriate diffraction vector." @default.
- W3036735331 created "2020-06-25" @default.
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- W3036735331 date "1983-08-01" @default.
- W3036735331 modified "2023-10-17" @default.
- W3036735331 title "Visualization by STEM annular DF of intralamellar shear in polyethylene" @default.
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- W3036735331 doi "https://doi.org/10.1017/s0424820100074057" @default.
- W3036735331 hasPublicationYear "1983" @default.
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