New strategy to increase comonomer incorporation in LLDPE synthesis using Ziegler-Natta catalysts
Publish place: Journal of Communications In Catalysis، Vol: 1، Issue: 1
Publish Year: 1396
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_CIC-1-1_001
تاریخ نمایه سازی: 26 فروردین 1397
Abstract:
Effect of FeCl3and FeCl3/SiCl4-doping on the performance of MgCl2 (ethoxide type)/TiCl4/TEAL catalytic system was evaluated in the linear low density polyethylene (LLDPE) synthesis using 1-hexene as the comonomer. Results revealed that FeCl3/SiCl4 modified catalytic system has better performance in terms of catalyst activity and comonomer incorporation when compared with unmodified catalyst or the catalytic system in the presence of FeCl3 alone. In fact, the introduction of FeCl3 doper, in its optimum amount of 10 wt. %, together with SiCl4induced better catalytic performance with 212 and 90 % increase in catalyst activity and 1-hexene incorporation, respectively. Copolymers characterization showed increased bulk density together with decreased crystallinity and Tm in the polymers from modified catalysts. Overall results showed that, new catalytic system represented in this work, is a good candidate for large scale LLDPE production with high comonomer amount
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Authors
Reza Bazvand
Polymerization Engineering Department, Iran Polymer and Petrochemical Institute (IPPI), P.O. Box ۱۴۹۶۵/۱۱۵, Tehran, Iran.
Naeimeh Bahri-Laleh
Polymerization Engineering Department, Iran Polymer and Petrochemical Institute (IPPI), P.O. Box ۱۴۹۶۵/۱۱۵, Tehran, Iran.
Mehdi Nekoomanesh
Polymerization Engineering Department, Iran Polymer and Petrochemical Institute (IPPI), P.O. Box ۱۴۹۶۵/۱۱۵, Tehran, Iran.
Hossein Abedini
Process, Modeling and Control Department, Iran Polymer & Petrochemical Institute, P.O. Box ۱۴۹۶۵/۱۱۵, Tehran, Iran.