The influence of some synthesis parameters on Ziegler-Natta catalyst performance |
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| Authors: | Marcos A S Costa Fernanda M B Coutinho Luiz C Santa Maria |
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| Affiliation: | (1) Instituto de Macromoléculas, Universidade Federal do Rio de Janeiro, P.O. Box 68.525, 21945-970 Rio de Janeiro, RJ, Brasil;(2) Instituto de Ciências, Escola Federal de Engenharia de Itajubá, Itajubá, MG, Brasil |
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| Abstract: | Catalysts based on TiCl3 modified by di-n-butyl ether (DBE) as internal base were synthesized with the aim to obtain polypropylene particles of controlled morphology. Two routes were used to synthesize the catalysts (System A and System B). In System A, DBE employed as internal base was complexed with TiCl4 and diethylaluminum chloride (DEAC) in iso-octane solution and in System B, DBE was complexed with triethylaluminum (TEA) and TiCl4 in toluene solution. The catalysts were evaluated in propylene polymerization and the polymer morphology was characterized by optical and scanning electron microscopies, bulk density and particle size distribution. |
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