Abstract: A method of making an ethylene-propylene (EP) copolymer includes immobilizing a metallocene catalyst on a layered double hydroxide (LDH) to form a supported metallocene catalyst complex. The method also includes mixing the supported metallocene catalyst complex in a nonpolar solvent to form a first mixture. The method further includes degassing the first mixture and saturating with a gaseous mixture of ethylene and propylene to form a second mixture. The method further includes mixing an aluminoxane catalyst with the second mixture to initiate a polymerization reaction of the ethylene and propylene to form a reaction mixture comprising the EP copolymer and separating the EP copolymer from the reaction mixture.

Abstract: A method of making a polyolefin nanocomposite including, mixing a zinc-aluminum layered double hydroxide (LDH), and a zirconocene complex in a non-polar solvent to form a first mixture. Prior to the mixing the zirconocene complex is not supported on the zinc-aluminum LDH. The method further includes sonicating the first mixture for at least one hour to form a homogeneous slurry. The method further includes degassing the homogenous slurry and adding at least one olefin gas to form a second mixture. The method further includes adding an aluminoxane catalyst to the second mixture and reacting for at least 10 minutes to form a reaction mixture including the polyolefin nanocomposite. The method further includes separating the polyolefin nanocomposite from the reaction mixture.

Abstract: A method of making a polyolefin nanocomposite including, mixing a zinc-aluminum layered double hydroxide (LDH), and a zirconocene complex in a non-polar solvent to form a first mixture. Prior to the mixing the zirconocene complex is not supported on the zinc-aluminum LDH. The method further includes sonicating the first mixture for at least one hour to form a homogeneous slurry. The method further includes degassing the homogenous slurry and adding at least one olefin gas to form a second mixture. The method further includes adding an aluminoxane catalyst to the second mixture and reacting for at least 10 minutes to form a reaction mixture including the polyolefin nanocomposite. The method further includes separating the polyolefin nanocomposite from the reaction mixture.

Abstract: A method of making a polyolefin including, mixing a layered double hydroxide (LDH), and a zirconocene complex in a non-polar solvent to form a first mixture. The method further includes degassing the first mixture and adding an olefin to form a second mixture. The method further includes adding an aluminoxane cocatalyst to the second mixture and reacting for at least 10 minutes to form a reaction mixture including the polyolefin. The method further includes separating the polyolefin from the reaction mixture. The polyolefin has a melting temperature of 120-130° C. The zirconocene complex is supported on the LDH to form a supported catalyst complex in the first mixture.

Abstract: A method of making a polyolefin nanocomposite including, mixing a zinc-aluminum layered double hydroxide (LDH), and a zirconocene complex in a non-polar solvent to form a first mixture. Prior to the mixing the zirconocene complex is not supported on the zinc-aluminum LDH. The method further includes sonicating the first mixture for at least one hour to form a homogeneous slurry. The method further includes degassing the homogenous slurry and adding at least one olefin gas to form a second mixture. The method further includes adding an aluminoxane catalyst to the second mixture and reacting for at least 10 minutes to form a reaction mixture including the polyolefin nanocomposite. The method further includes separating the polyolefin nanocomposite from the reaction mixture.

Abstract: Methods of preparing high-density polyethylene (HDPE) nanocomposites by in situ polymerization with a metallocene catalyst and a methylaluminoxane co-catalyst in a solvent. The HDPE nanocomposites contain graphene nanofillers that promote the polymerization process, and are found to enhance the molecular weight, molecular weight distribution and flame retardency of the HDPE nanocomposites produced.

Abstract: A method involving polymerizing ethylene in the presence of a catalyst composition containing BaFe12O19 nanoparticles, a zirconocene catalyst, and an alkylaluminoxane co-catalyst. A nanocomposite is formed by the polymerization, whereby the BaFe12O19 nanoparticles are dispersed in a matrix of polyethylene (PE), and the % crystallinity is lowered. The activity of the catalyst is increased in the presence of the BaFe12O19 nanoparticles.

Abstract: A method involving polymerizing ethylene in the presence of a catalyst composition containing BaFe12O19 nanoparticles, a zirconocene catalyst, and an alkylaluminoxane co-catalyst. A nanocomposite is formed by the polymerization, whereby the BaFe12O19 nanoparticles are dispersed in a matrix of polyethylene (PE), and the % crystallinity is lowered. The activity of the catalyst is increased in the presence of the BaFe12O19 nanoparticles.

Abstract: A method involving polymerizing ethylene in the presence of a catalyst composition containing BaFe12O19 nanoparticles, a zirconocene catalyst, and an alkylaluminoxane co-catalyst. A nanocomposite is formed by the polymerization, whereby the BaFe12O19 nanoparticles are dispersed in a matrix of polyethylene (PE), and the % crystallinity is lowered. The activity of the catalyst is increased in the presence of the BaFe12O19 nanoparticles.

Abstract: Methods of preparing high-density polyethylene (HDPE) nanocomposites by in situ polymerization with a metallocene catalyst and a methylaluminoxane co-catalyst in a solvent. The HDPE nanocomposites contain graphene nanofillers that promote the polymerization process, and are found to enhance the molecular weight, molecular weight distribution and flame retardency of the HDPE nanocomposites produced.

Abstract: A method involving polymerizing ethylene in the presence of a catalyst composition containing BaFe12O19 nanoparticles, a zirconocene catalyst, and an alkylaluminoxane co-catalyst. A nanocomposite is formed by the polymerization, whereby the BaFe12O19 nanoparticles are dispersed in a matrix of polyethylene (PE), and the % crystallinity is lowered. The activity of the catalyst is increased in the presence of the BaFe12O19 nanoparticles.

Abstract: Methods of preparing high-density polyethylene (HDPE) nanocomposites by in situ polymerization with a metallocene catalyst and a methylaluminoxane co-catalyst in a solvent. The HDPE nanocomposites contain graphene nanofillers that promote the polymerization process, and are found to enhance the molecular weight, molecular weight distribution and flame retardency of the HDPE nanocomposites produced.