𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Degradation of dinitrated-poly(n-vinylcarbazole) by thermogravimetry

✍ Scribed by M.C. Gonzalez; F. Zamora


Publisher
Elsevier Science
Year
1990
Tongue
English
Weight
334 KB
Volume
26
Category
Article
ISSN
0014-3057

No coin nor oath required. For personal study only.

✦ Synopsis


The techniques of isothermal and dynamic thermogravimetry have been used to study the degradation of six nitrated homodisperse fractions of poly(N-vinylcarbazole). The effects of nitrogen content and molecular weight of the samples on kinetic parameters are reported. Increasing the heating rate or using higher isothermal temperatures causes a sudden mass-loss and an increasing sample temperature was observed. An induction period in which -NO 2 scission took place may be the cause of this sudden mass-loss.


πŸ“œ SIMILAR VOLUMES


Degradation of partially mononitrated-po
✍ F. Zamora; M.C. Gonzalez; L.M. Leon πŸ“‚ Article πŸ“… 1990 πŸ› Elsevier Science 🌐 English βš– 328 KB

Fractions of cationic poly(N-vinylcarbazole) (PNVC-A) and unfractionated radical poly(Nvinylcarbazole) (PNVC-B) have been nitrated in dimethylsulphoxide using a sulphuric-nitric acid mixture. Proportions of 3-nitrocarbazoyl units, ranging from 70 to 90% were found in PNVC-A samples depending on the

Degradation of poly(N-vinylcarbazole) by
✍ K. Alimi; G. Safoula; J. C. Bernede; C. Rabiller πŸ“‚ Article πŸ“… 1996 πŸ› John Wiley and Sons 🌐 English βš– 462 KB πŸ‘ 1 views

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, a

The influence of molecular weight on the
✍ M.C. GonzΓ‘lez; F. Zamora; L.M. LeΓ³n; G.M. GuzmΓ‘n πŸ“‚ Article πŸ“… 1982 πŸ› Elsevier Science 🌐 English βš– 247 KB

The methods of isothermal and dynamic thermogravimetry have been used to study the degradation of poly(N-vinylcarbazole) (PNVC). The multiple heating rate method has been used. as a dynamic method, to obtain kinetic parameters. A linear relationship between the activation energy. E. and M,71 (~,,, b

Chemical modification of poly(N-vinylcar
✍ J. Pielichowski; E. Morawiec πŸ“‚ Article πŸ“… 1976 πŸ› John Wiley and Sons 🌐 English βš– 466 KB πŸ‘ 1 views

Investigation of the phosphorylation reaction of poly(vinylcarbazo1e) was carried out using different phosphorylating reagents and in the presence of various catalysts. Pc13, PBr3, P2S5, and H3P04 + P205 were examined, and it was noticed that PC13 and PBr3 were the most effective phosphorylating rea