Scattering and diffraction methods

Analyte

• Native und man-made polymers, composites, foams, basic material, powder, granulate material, fibers, solutions, components
• Sample quantity: approx. 0.1 cm³

Equipment

• X-ray diffraction instrument: Kratky-Compact System
• Monochromator: Ni-filter
• Wave length: Cu-Kα; λ = 0.1542 nm
• Detector: one-dimensional position sensitive detector (PSD)
• Operation: transmission geometry

• X-ray diffraction instrument: pinhole camera
• Monochromator: Ni-filter
• Wave length: Cu-Kα; λ = 0.1542 nm
• Detector: CCD area detector
• Operation: transmission geometry
• Accessories: sample changer, heater

• X-ray diffraction instrument: flat-film camera
• Monochromator: Ni-filter
• Wave length: Cu-Kα; λ = 0.1542 nm
• Detector: X-ray film
• Operation: transmission geometry

Evaluation methods and targets

• Average pore volume w_v [%]
• Average specific inner surface O_sp [m²/cm³]
• Average pore intersection length I_v [nm]
• Determination of long periods
• Characterization of the pore structure of polymers (1-100 nm)

Applications

• Characterization of the pore structure of cellulose  and cellulose carbamate fibers
• Determination of the long periods of polypropylene film-stripes
• Characterization of the pore structure of man-made bone

Comparative and additional methods

• Wide angle X-ray scattering (WAXS)
• Scanning electron microscopy (SEM)
• Transmission electron microscopy (TEM)
• Optical microscopy (OM)