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Angle X-ray Diffraction

The intense low angle scatter from carbon fibers is due to their porous nature and Johnson and Tyson [39] measured the size parameters for the pores and crystallites and found that in HM fiber, sharp edged voids less than 1 nm in width separated the crystallites in the lateral direction and twist or tilt boundaries were held to separate the crystallites in a lateral direction. This work was continued in order to measure the physical properties of carbon fibers [40]. [Pg.473]

Small angle X-ray scattering in carbon fibers was undertaken by Gupta and co-workers [41]. Two useful publications for more information are [42,43]. [Pg.473]


Brunei M 1995 Glancing angle x-ray diffraction Encyciopedia of Anaiyticai Science vol 8, ed A Townshend (London Academic) 8 4922-30... [Pg.1798]

Cationic quaternary ammonium compounds such as distearyldimethylammonium-chloride (DSDMAC) used as a softener and as an antistatic, form hydrated particles in a dispersed phase having a similar structure to that of the multilayered liposomes or vesicles of phospholipids 77,79). This liposome-like structure could be made visible by electron microscopy using the freeze-fracture replica technique as shown by Okumura et al. 79). The concentric circles observed should be bimolecular lamellar layers with the sandwiched parts being the entrapped water. In addition, the longest spacings of the small angle X-ray diffraction pattern can be attributed to the inter-lamellar distances. These liposome structures are formed by the hydrated detergent not only in the gel state but also at relatively low concentrations. [Pg.12]

To ensure quality control material suppliers and developers routinely measure such complex properties as molecular weight and its distribution, crystallinity and crystalline lattice geometry, and detailed fracture characteristics (Chapter 6). They use complex, specialized tests such as gel permeation chromatography (2, 3), wide- and narrow-angle X-ray diffraction, scanning electron microscopy, and high-temperature pressurized solvent reaction tests to develop new polymers and plastics applications. [Pg.300]

Bond or angle X-ray diffraction Neutron diffraction Calculated ... [Pg.18]

Figure 8.8 Space-filling model based on small-angle X-ray diffraction measures, showing how two hemidiscotic molecules of 8 can give rise to a disk-like shape. (Adapted from Ref [11].)... Figure 8.8 Space-filling model based on small-angle X-ray diffraction measures, showing how two hemidiscotic molecules of 8 can give rise to a disk-like shape. (Adapted from Ref [11].)...
Figure 1. Wide angle X-ray diffraction pattern from PET films exposed to DMF at various temperatures for 15 min. Figure 1. Wide angle X-ray diffraction pattern from PET films exposed to DMF at various temperatures for 15 min.
Herbette and co-workers [425-428,445] studied the structures of drugs bound to liposomes using a low-angle X-ray diffraction technique. Although the structural... [Pg.69]

Figure 5. Room-temperature, wide-angle X-ray diffraction (WAXD) pictures of stretch-oriented samples of PDHS (left) and PDPS (right). Figure 5. Room-temperature, wide-angle X-ray diffraction (WAXD) pictures of stretch-oriented samples of PDHS (left) and PDPS (right).
A Siemens Kratky camera system was utilized for small angle x-ray scattering (SAXS) measurements in conjunction with an M. Braun position sensitive detector from Innovative Technology Inc.. Wide angle x-ray diffraction was obtained utilizing a Philips table-top x-ray generator. [Pg.358]

Figure 7.12 Wide-angle X-ray diffraction spectrum from high density polyethylene... Figure 7.12 Wide-angle X-ray diffraction spectrum from high density polyethylene...
Figure 7 Plot of the degree of crystallinity (XNMR) by obtained by BC NMR against crystallinity (Xx.ray) obtained by wide angle X-ray diffraction for an unfractionated linear polyethylene sample crystallized in different conditions (data from Ref. [129]). Figure 7 Plot of the degree of crystallinity (XNMR) by obtained by BC NMR against crystallinity (Xx.ray) obtained by wide angle X-ray diffraction for an unfractionated linear polyethylene sample crystallized in different conditions (data from Ref. [129]).

See other pages where Angle X-ray Diffraction is mentioned: [Pg.332]    [Pg.6]    [Pg.208]    [Pg.211]    [Pg.264]    [Pg.137]    [Pg.56]    [Pg.314]    [Pg.390]    [Pg.161]    [Pg.102]    [Pg.95]    [Pg.103]    [Pg.564]    [Pg.360]    [Pg.367]    [Pg.368]    [Pg.11]    [Pg.19]    [Pg.47]    [Pg.358]    [Pg.145]    [Pg.145]    [Pg.147]    [Pg.147]    [Pg.10]    [Pg.258]    [Pg.328]    [Pg.186]    [Pg.189]   


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Diffraction angle

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