High-speed X-ray analysis

Abstract

The profile-fitting method was used to analyze data, collected at speeds up to 1 ° (20) per second with a computer-controlled diffractometer, which gave precise values of intensities and angles of reflections above a selected intensity threshold level. Powder diffraction data with 52 reflections in a 40 ° range were collected and analyzed in a few minutes. This technique has also been applied to X-ray fluorescence spectroscopy, and is applicable to single-crystal diffractometry and wavelength-dispersive electron microprobe analysis. 229

Aliphatic Polyamides

“…[33][34][35][36] The amide-interchange reaction has also been found to be acid catalyzed. By reacting for longer periods of time (120 min at 260°C), a completely random copolyamide can be formed.…”