Characterization of pitches by X-ray scattering and differential scanning calorimetry

✍ Scribed by Henry Preiss; Klaus Szulzewsky; Peter Kölsch

• Publisher: Elsevier Science
• Year: 1993
• Tongue: English
• Weight: 338 KB
• Volume: 72
• Category: Article
• ISSN: 0016-2361
• DOI: 10.1016/0016-2361(93)90129-p

✦ Synopsis

In this study X-ray investigations of distilled and partly pyrolysed pitches were performed at moderately small scattering angles. The average molecular diameters, determined from the peak maxima at moderately small angles, increase with the temperature of heat treatment. In the case of pitch distillation, the increase of the molecular diameter correlates with the increase of the glass transition temperature measured by differential scanning calorimetry (d.s.c.). It was found that both X-ray and d.s.c. methods are well adapted to check pitch transformation during heat treatment.