New Penta-ether as the Internal Donor in the MgCl<sub>2</sub>-supported Ziegler-Natta Catalysts for Propylene Polymerization

Roya Zahedi; Faramarz Afshar Taromi; Seyed Heidar Mirjahanmardi; Mehdi Nekoomanesh Haghighi; Khosrow Jadidi; Roghayeh Jamjah

doi:10.1007/s10118-016-1751-2

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New Penta-ether as the Internal Donor in the MgCl₂-supported Ziegler-Natta Catalysts for Propylene Polymerization

Updated：2021-06-21

- New Penta-ether as the Internal Donor in the MgCl₂-supported Ziegler-Natta Catalysts for Propylene Polymerization
- Chinese Journal of Polymer Science Vol. 34, Issue 3, Pages: 268-279(2016)
- Affiliations：
  
  a.Department of Chemistry, Amirkabir University of Technology, 15875-4413, Tehran, Iran
  b.Department of Polymer Engineering, Amirkabir University of Technology, 15875-4413, Tehran, Iran
  c.Department of Polymer Engineering, Amirkabir University of Technology-Mahshahr Campus, 63516-43659, Mahshahr, Iran
  d.Iran Polymer and Petrochemical Institute (IPPI), 14977-13115, Tehran, Iran
  e.Department of Chemistry, Shahid Beheshti University, 19839-69411, Tehran, Iran
- Author bio：
  
  **Faramarz Afshar Taromi, E-mail: afshar@aut.ac.ir
- Funds：
- DOI：10.1007/s10118-016-1751-2
  CLC：
- Received：12 August 2015，
  
  Revised：2015-11-12，
  
  Accepted：15 November 2015，
  
  Published：2016-03
- Accepted：
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Roya Zahedi, Faramarz Afshar Taromi, Seyed Heidar Mirjahanmardi, et al. New Penta-ether as the Internal Donor in the MgCl₂-supported Ziegler-Natta Catalysts for Propylene Polymerization[J]. Chinese Journal of Polymer Science, 2016, 34(3): 268-279. DOI: 10.1007/s10118-016-1751-2.
DOI：

Roya Zahedi, Faramarz Afshar Taromi, Seyed Heidar Mirjahanmardi, et al. New Penta-ether as the Internal Donor in the MgCl₂-supported Ziegler-Natta Catalysts for Propylene Polymerization[J]. Chinese Journal of Polymer Science, 2016, 34(3): 268-279. DOI: 10.1007/s10118-016-1751-2. DOI：

摘要

Abstract

The penta-ether compound was synthesized by the reaction of di(trimethylolpropane) with sodium hydride as the strong base and methyl iodide as the alkyl halide. This compound was characterized by NMR

FTIR

and GC techniques. The MgCl

-supported titanium catalysts were incorporated with varying amounts of penta-ether compound as the internal donor and also the catalysts without the internal donor were synthesized. The synthesized catalysts and the conventional Ziegler-Natta catalyst were characterized. The titanium contents were determined by spectrophotometry

magnesium by complexometric titration and chloride by argentometric titration. The effects of the new internal donor on propylene polymerization with the prepared MgCl

-supported Ziegler-Natta catalysts were investigated and then these results were compared to the results obtained using the conventional diisobutyl phthalate-besed-Ziegler-Natta catalyst. The highest crystallinity degree

melting temperature

and isotacticity of polypropylene were obtained using the catalyst with a penta-ether/Mg molar ratio equal to 0.21.

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New Penta-ether as the Internal Donor in the MgCl2-supported Ziegler-Natta Catalysts for Propylene Polymerization

DOI：10.1007/s10118-016-1751-2

摘要

Abstract

关键词

Keywords

references

New Penta-ether as the Internal Donor in the MgCl₂-supported Ziegler-Natta Catalysts for Propylene Polymerization