Polyethylene-Waste Tire Dust Composites Via In Situ Polymerization
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| Format: | Artículo científico |
| Langue: | en |
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Sociedad Química de México
2014
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| _version_ | 1876478811571224576 |
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| author | Yadira Karina Reyes Acosta |
| author_facet | Yadira Karina Reyes Acosta |
| contents | Polyethylene-Waste Tire Dust Composites Via In Situ Polymerization Yadira Karina Reyes Acosta Rosa Idalia Narro Céspedes María Guadalupe Neira Velázquez Francisco Enríquez-Medrano Luis Alexandro Valencia López María Elena Ramos Aguiñaga Hened Saade Caballero Ramón Díaz de León José Díaz Elizondo Multidisciplinaria (Ciencias Naturales y Exactas) Key words Polyethylene waste tire dust metallocene catalyst Polyethylene/waste tire dust ( wtd ) composites were ob - tained by an in situ polymerization technique. The surface of the wtd was modified with deposition of polyethylene by using plas - ma polymerization. Ethylene polymerization was carried out using bis(cyclopentadienyl) titanium dichloride (Cp 2 TiCl 2 ) as homogeneous metallocene catalyst, while diethylaluminum chloride ( deac ), eth - ylaluminum sesquichloride ( easc ) and methyl aluminoxane ( mao ) were used as co-catalysts at two different [Al]/[Ti] molar ratio. The main characteristics of the obtained polyethylenes were determined by size exclusion chromatography, thermogravimetric analysis, dif - ferential scanning calorimetry and wide-angle X-ray diffraction. The results showed that by using easc and mao the highest catalytic activities were presented at a [Al]/[Ti] molar ratio of 9.17 and 18.33 respectively. Even though it was possible to obtain polyethylene using wtd (modified or unmodified) the catalytic activity was lower than in the case in which no wtd was added in ethylene polymerization. Scanning transmission electronic microscopy images evidenced that the original morphology of the polyethylenes was not modified by the presence of wtd. 2014 artículo científico 1870-249X https://www.redalyc.org/articulo.oa?id=47531764006 en http://www.redalyc.org/revista.oa?id=475 Journal of the Mexican Chemical Society application/pdf Sociedad Química de México Journal of the Mexican Chemical Society (México) Num.2 Vol.58 |
| format | Artículo científico |
| id | redalyc_47531764006 |
| institution | Redalyc |
| language | en |
| publishDate | 2014 |
| publisher | Sociedad Química de México |
| spellingShingle | Polyethylene-Waste Tire Dust Composites Via In Situ Polymerization Yadira Karina Reyes Acosta Multidisciplinaria (Ciencias Naturales y Exactas) Key words Polyethylene waste tire dust metallocene catalyst Polyethylene-Waste Tire Dust Composites Via In Situ Polymerization Yadira Karina Reyes Acosta Rosa Idalia Narro Céspedes María Guadalupe Neira Velázquez Francisco Enríquez-Medrano Luis Alexandro Valencia López María Elena Ramos Aguiñaga Hened Saade Caballero Ramón Díaz de León José Díaz Elizondo Multidisciplinaria (Ciencias Naturales y Exactas) Key words Polyethylene waste tire dust metallocene catalyst Polyethylene/waste tire dust ( wtd ) composites were ob - tained by an in situ polymerization technique. The surface of the wtd was modified with deposition of polyethylene by using plas - ma polymerization. Ethylene polymerization was carried out using bis(cyclopentadienyl) titanium dichloride (Cp 2 TiCl 2 ) as homogeneous metallocene catalyst, while diethylaluminum chloride ( deac ), eth - ylaluminum sesquichloride ( easc ) and methyl aluminoxane ( mao ) were used as co-catalysts at two different [Al]/[Ti] molar ratio. The main characteristics of the obtained polyethylenes were determined by size exclusion chromatography, thermogravimetric analysis, dif - ferential scanning calorimetry and wide-angle X-ray diffraction. The results showed that by using easc and mao the highest catalytic activities were presented at a [Al]/[Ti] molar ratio of 9.17 and 18.33 respectively. Even though it was possible to obtain polyethylene using wtd (modified or unmodified) the catalytic activity was lower than in the case in which no wtd was added in ethylene polymerization. Scanning transmission electronic microscopy images evidenced that the original morphology of the polyethylenes was not modified by the presence of wtd. 2014 artículo científico 1870-249X https://www.redalyc.org/articulo.oa?id=47531764006 en http://www.redalyc.org/revista.oa?id=475 Journal of the Mexican Chemical Society application/pdf Sociedad Química de México Journal of the Mexican Chemical Society (México) Num.2 Vol.58 |
| title | Polyethylene-Waste Tire Dust Composites Via In Situ Polymerization |
| topic | Multidisciplinaria (Ciencias Naturales y Exactas) Key words Polyethylene waste tire dust metallocene catalyst |
| url | https://www.redalyc.org/articulo.oa?id=47531764006 |