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| Content Provider | Springer Nature Link |
|---|---|
| Author | Lavina, S. Campostrini, R. Girardi, F. Aswath, P. B. to, V. Maggio, R. |
| Copyright Year | 2014 |
| Abstract | This report is focused on the quantitative thermogravimetric–mass spectrometric (TG–MS) analyses and the electrical response of two hybrid organic–inorganic materials (HYP and HYPC), obtained reacting together nanoclusters of zirconium oxides-hydroxides with 3-butenoates and cross-linked with vinyltrimethoxysilane. HYP was cured at 363 K, while HYPC at 403 K. Condensation of the silanol groups, producing shrinkage, alcoholation and the release of 3-butenoic acid and methyl 3-butenoate are the main processes involved in the early stages of pyrolysis from 323 to 633 K. The nominal formula for the two samples with a fair degree of approximation was obtained by elemental analysis and quantitative TG–MS measurements. Morphology of HYP and HYPC is determined by high-resolution transmission electron microscopy. In both HYP and HYPC, the electric response is characterized by a molecular dipole relaxation detected at higher frequencies and an inter-domain polarization phenomenon revealed at the lower frequencies, due to the presence of charged interfaces between nanodomains with different permittivities. HYP material showed a further dipole relaxation at intermediate frequencies, which assists the charge migration process. HYPC, containing a smaller density of 3-butenoate groups, reveals a long-range charge migration event of mobile species by hopping processes between relatively stiff sites. |
| Starting Page | 2305 |
| Ending Page | 2319 |
| Page Count | 15 |
| File Format | |
| ISSN | 13886150 |
| Journal | Journal of thermal analysis |
| Volume Number | 119 |
| Issue Number | 3 |
| e-ISSN | 15882926 |
| Language | English |
| Publisher | Springer Netherlands |
| Publisher Date | 2014-12-02 |
| Publisher Place | Dordrecht |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Dielectric hybrid materials Pyrolysis mechanims HRTEM TG-MS BES Physical Chemistry Analytical Chemistry Polymer Sciences Inorganic Chemistry Measurement Science and Instrumentation |
| Content Type | Text |
| Resource Type | Article |
| Subject | Physical and Theoretical Chemistry Condensed Matter Physics |
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