Carbon Black and Fullerenes: New Discoveries in Early Formation Mechanisms and Nucleation
| Autor: | C. C. Wang, R. W. Locke, Jean-Baptiste Donnet, Patrick Bertrand, T.K. Wang, M. Pontier Johnson |
|---|---|
| Rok vydání: | 2000 |
| Předmět: | |
| Zdroj: | Rubber Chemistry and Technology. 73:875-888 |
| ISSN: | 1943-4804 0035-9475 |
| DOI: | 10.5254/1.3547626 |
| Popis: | Recent studies on the formation of carbon black have resulted in the previously unreported finding of buckminster-fullerene, C60, in trace quantities in the toluene extractable materials. High-resolution transmission electron microscopy (HRTEM) experiments indicate the molecule may be functioning as a nucleation site in the formation of primary particles of carbon black. Time-of-flight secondary ion mass spectroscopy (ToF-SIMS) and X-ray photoelectron spectroscopy (XPS) provided the surface chemical analysis of conventional and experimental carbon blacks. The toluene extracts represented the precursor compounds present in the gaseous phase at the time of quench. The extracts were analyzed by Fourier transform infrared (FTIR) spectroscopy, liquid chromatography (LC)/mass spectroscopy (MS) and elemental composition. The data, taken as a whole, have led to a more clear understanding of the competitive chemical pathways occurring during the inception and nucleation of a primary particle of carbon black. Direct observation of nucleation sites and types are possible with HRTEM analysis. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|