| Autor: |
Doğan, Mehmet, Gündüz, Zürriye, Kızılduman, Berna Koçer, Turan Beyli, Pınar, Turhan, Yasemin, Doğan, Serap, Diken, Mehmet Emin |
| Zdroj: |
Plastics, Rubber, and Composites; March 2023, Vol. 52 Issue: 3 p186-196, 11p |
| Abstrakt: |
ABSTRACTNano boron oxide (B2O3) was firstly produced from granular B2O3by ball milling under cryogenic conditions. Then, PMMA/B2O3nanocomposites were synthesized by melting method and then characterized. Finally, the rheological properties of PMMA/B2O3nanocomposite were investigated using a high pressure capillary rheometer. Brauner-Emmet-Teller (BET) surface area analysis showed that the surface area of B2O3increased with cryogenic grinding. Transmission electron microscopy (TEM) images revealed that B2O3particles were nano-sized. Scanning electron microscopy (SEM) images showed that the morphology changed with the increase of B2O3amount. The thermal stability of nanocomposites was found to be better than PMMA. PMMA degraded in two steps, while nanocomposites degraded in one step. It was determined that the amount of residue increased with increasing amount of B2O3. Both PMMA and nanocomposites exhibited non-Newtonian shear thinning flow behavior. In addition, rheological data were found to be highly compatible with the Power Law model. |
| Databáze: |
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