Effects of GO oxidation degree on GO/BuMgCl-supported Ti-based Ziegler–Natta catalyst performance and nanocomposite properties
| Autor: | Hexin Zhang, Xuequan Zhang, Eun-Bin Ko, Dong-Ho Lee, Keun-Byoung Yoon, Jae-Hyeong Park, Min-Gi Bae |
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| Rok vydání: | 2016 |
| Předmět: |
Nanocomposite
Graphene General Chemical Engineering Thermal decomposition Oxide 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences law.invention Catalysis chemistry.chemical_compound chemistry Chemical engineering law Masterbatch Polymer chemistry Heat deflection temperature Ziegler–Natta catalyst 0210 nano-technology |
| Zdroj: | RSC Advances. 6:20734-20740 |
| ISSN: | 2046-2069 |
| DOI: | 10.1039/c6ra00141f |
| Popis: | In the present research, three graphene oxide (GO)/n-butyl-magnesium chloride (BuMgCl)-supported Ti-based Ziegler–Natta catalysts were synthesized by the reaction of Grignard reagent with GO at various oxidation degrees, followed by anchoring of TiCl4. The effects of GO oxidation degree and of the reaction conditions on in situ ethylene polymerization were investigated. The obtained PE/reduced GO (rGO) product was subsequently used as a masterbatch for melt-blending with commercial PE. The resultant PE/rGO nanocomposites, even at low rGO loads, due to the good dispersion and to the good interface adhesion of the graphene sheet and the PE matrix, exhibited significant increase in heat distortion temperature, thermal decomposition temperature, tensile strength and modulus, in addition to acceptable reduction in elongation at break. |
| Databáze: | OpenAIRE |
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