Systematic Study of the Effect of Incorporation of Carbon Nanotubes into GexSe1-x Glass System
| Autor: | John Adamick, Mehdi Millot, David Hellman, Jake Anderson, John Rademacher, Chari Ramkumar, Wayne Bresser |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
chemistry.chemical_classification
Materials science Base (chemistry) Mechanical Engineering chemistry.chemical_element Germanium 02 engineering and technology Carbon nanotube 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Oxygen 0104 chemical sciences law.invention Differential scanning calorimetry chemistry Chemical engineering Mechanics of Materials law General Materials Science 0210 nano-technology Glass transition Carbon Selenium |
| Zdroj: | MRS Advances. 5:2763-2770 |
| ISSN: | 2059-8521 |
| DOI: | 10.1557/adv.2020.315 |
| Popis: | We have successfully synthesized GexSe1-x (x = 0.225) glass samples and incorporated commercially produced (Protein Mods) carbon nanotubes (CNTs) into the glass samples. We investigated the glass transition temperature (Tg) using modulated differential scanning calorimetry (MDSC). CNTs, being a very hygroscopic material as well as oxygen absorbing material, needed to be cleaned under vacuum with the hot water-bath to get rid of contaminants. We used contaminant-free CNTs for our study. The same cleaning process was used to prepare GexSe1-x (x = 0.225) glass samples with and without CNTs. The base GexSe1-x (x = 0.225) glass sample has a Tg of 220°C. The Tg was found to be independent of starting materials (germanium and selenium) from different sources as well as hot water-bath temperature. The Tg was found to be lower when 5% CNT’s by mass was added to the base GexSe1-x (x = 0.225) glass sample. For 10% incorporation, the Tg was found to increase from that of 5% and it was found to decrease from that of 10% when 15% CNTs was added to the base glass sample. We also found that the Tg for GexSe1-x (x = 0.225) glass samples with the incorporation of 5% not-cleaned CNTs was 10oC higher, indicating the sensitivity of Tg on contaminants. Further, it was found that the variation of Tg with the incorporation of bulk carbon into the GexSe1-x (x = 0.225) glass samples was inconsistent compared to the contaminant-free CNTs incorporation. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink