Polyethylene single crystal, sectorization

Fig. 3.15. Growth rates of (110) and (200) sectors of polyethylene single crystals grown from solution in tetradecanol (courtesy of S. Organ)...

Fig. 6 Sectorisation of polyethylene single crystals. The upper crystal shows only 110 sectors whereas the lower also has 100 sectors. With permission from Kluwer, Doordrecht, Netherlands [91]...

Fig. 7 Schematic drawing of tent-shaped polyethylene single crystals with only 110 sectors...

Fig. 10.15 Surface morphology of paraffin wax that was sprayed on the polyethylene single crystal grown in thin films (Wittmann and Lotz 1985). The epitaxial grown paraffin wax with favorite orientations clearly shows different fold-end sectors (Permission granted by Wiley)...

Experiments of difference spectroscopy combined with band deconvolution processes were presented and conclusions were not unambiguous [115]. On the other hand, the arbitrary decisions taken when applying band deconvolution techniques sometimes make issue more complex. We have tried to avoid band deconvolution and proceeded directly to careful experiments of difference spectroscopy on sectored polyethylene single crystals. The principle on which the experiments was based is the following. From the study of sectored polyethylene single crystals it is known that sectors correspond to regions where molecular chains are crystallized in the... 

Figure 3-29. Scheme of the experiments of difference spectroscopy on sectored single crystals of polyethylene, (a) single crystal - bulk = (110)-1-(200) surface of the sectored crystals (b) (110) -I- (200) surface — (110) surface = (200) surface. 

Fig. 4.9 Schematic diagrams of two forms of lamellar single crystals of polyethylene, (a) Crystal with 110 sectors, (b) Crystal with 100 sectors as well.

Figure 3.8 Single crystal of poly(ethylene oxide) grown from 0.01% toluene solution at 25°C. Sectors are revealed by decorating the basal surface with short polyethylene crystals as described in the text. While the crystal appears to be square, growth faces are 120 in a monoclinic system. From Chen et al. [8] with permission from John Wiley Sons, Inc.

Fig. 10.14 Illustration of fold-end sectorization in the single polyethylene crystals (Bassett et al.

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