Lamellar overgrowth

Fig. 12.24. "Shish-kebab" structure showing extended-chain crystals with lamellar overgrowths.

Epitaxial lamellar overgrowths are instrumental in production of complex morphological features. One of them is shish-kebab morphology. Shish-kebab morphologies are frequently observed in crystallizations from solution or melt under extensional strain or flow. ... 

Fig. 11. An AFM micrograph (phase image) showing a shish-kebab crystal of polyethylene in a matrix of molten poljmier. Image collected at 135°C. The bright area in the top right of the image is the glass substrate. The extended chain backbone and lamellar overgrowths can be clearly seen. The scale bar represents 100 nm. Reprinted from Ref 92. Copyright (2001), with permission from the American Chemical Society.

Randomly oriented lamellae, short and C-shaped Fibrous core with lamellar overgrowth... 

Small nuclei exhibiting internal structure, i.e. a core plus lamellar overgrowths isotactic polystyrene crystallized... 

Figure 1 Schematic illustration of the generation of a cylindrite. (a) Random melt (b) oriented melt (c) microfibrillar nucleus (d) lamellar overgrowth form.

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