Particle and aerosol research (한국입자에어로졸학회지)

Korean Association for Particle and Aerosol Research (한국입자에어로졸학회)
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Polymerization of Polyethylene Using Bimodal TiCl4/MgCl2/SBA-15/MCM-41

  • Moonyakmoon, Mattanawadee (Materials Chemistry Research Center, Department of Chemistry, Faculty of Science, Khon Kaen University) ;
  • Klinsrisuk, Sujitra (Materials Chemistry Research Center, Department of Chemistry, Faculty of Science, Khon Kaen University) ;
  • Poonsawat, Choosak (Materials Chemistry Research Center, Department of Chemistry, Faculty of Science, Khon Kaen University)
  • Received : 2015.08.03
  • Accepted : 2015.09.21
  • Published : 2015.09.30
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Abstract

MCM-41 (Mobil Composition of Matter) and SBA-15 (Santa Barbara Amorphous) were used as a supported catalyst for ethylene polymerization due to their combination of large surface area and wide range of pore size distribution. The morphology of supports was used to control the morphology of the resulting polymer. Different molar ratios of Al/Ti were used for ethylene polymerization at $60^{\circ}C$ under atmospheric pressure. The effect of different mass ratios of MCM-41/SBA-15 and 1-hexene concentration on polymerization activity and polymer properties was investigated. The catalytic activity and the crystallinity reached the highest value at Al/Ti of 480. Upon incorporation of MCM-41 and SBA-15 into $MgCl_2/TiCl_4$ catalyst, the molecular weight and crystallinity of polyethylene were enhanced. The obtained polyethylene showed melting temperature between 130 and $135^{\circ}C$. The polyethylene with replication structure of support and bimodal MWD was expected.

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