✦ LIBER ✦

Degradation of poly(N-vinylcarbazole) by annealing under iodine pressure

✍ Scribed by K. Alimi; G. Safoula; J. C. Bernede; C. Rabiller

Publisher: John Wiley and Sons
Year: 1996
Tongue: English
Weight: 462 KB
Volume: 34
Category: Article
ISSN: 0887-6266
DOI: 10.1002/(sici)1099-0488(19960415)34:5<845::aid-polb3>3.0.co;2-l

No coin nor oath required. For personal study only.

✦ Synopsis

After room temperature doping of poly(N-vinylcarbazole) by iodine, the powders are annealed at different temperatures (370, 470, and 570 K) for 24 h under vacuum or under iodine pressure. The obtained powders were studied by infrared absorption, x-ray photoelectron spectroscopy, x-ray diffraction, and nuclear magnetic resonance. Annealing of pure PVK powder increases the crystallization quality of the sample. Annealing with iodine induces progressive polymer degradation. At 570 K under iodine pressure the PVK is totally destroyed. The aromatic rings and the C -N bonds have disappeared. NHJ crystallites have formed, embeded in a degraded, cross-linked polymer matrix.

📜 SIMILAR VOLUMES

Study of the evolution of the conductivi

Study of the evolution of the conductivity of iodine-doped poly(N-vinylcarbazole) as a function of annealing treatment

✍ G. Safoula; J. C. Bernede; K. Alimi; P. Molinie; S. Touihri 📂 Article 📅 1996 🏛 John Wiley and Sons 🌐 English ⚖ 495 KB 👁 2 views

Electron spin resonance (ESR) and d.c. conductivity measurements on iodine-doped poly(Nvinylcarbazole) (PVK) as a function of annealing treatment was performed. When doped at room temperature as at 370 K, the appearance of an ESR signal and the increase of the conductivity can be explained by CT com