Abstract: Multi-walled carbon nanotubes impregnated with iron nanoparticles are synthesized. The multi-walled carbon nanotubes are used as sorbents to remove benzene from water. The removal of benzene increases with the increase of impregnated iron percent in the multi-walled carbon nanotube.

Abstract: The method to produce ultra-high-molecular-weight polyethylene (UHMWPE) incorporates tungsten-doped titania (TiO2/W) nanofiller during the ethylene polymerization process. The UHMWPE possesses improved mechanical and thermal properties. The process for producing the UHMWPE includes contacting ethylene under polymerization conditions with a polymerization catalyst (a vanadium (III) complex bearing bidentate salicylaldiminato ligands) in the presence of TiO2/W nanofiller and a co-catalyst in a reactor. The reactor is charged with solvent (e.g., toluene) and heated to a temperature suitable for polymerization, e.g., about 30° C. Following heating, the ethylene monomer is fed into the reactor and allowed to saturate for at least 10 minutes, and a methyl aluminum dichloride co-catalyst (MADC) is added to initiate polymerization of ethylene. Polymerization is quenched by adding methanol containing HCl incorporated with titania-tungsten nanofillers, which is then washed and dried to yield UHMWPE.

Abstract: The method to produce ultra-high-molecular-weight polyethylene (UHMWPE) incorporates tungsten-doped titania (TiO2/W) nanofiller during the ethylene polymerization process. The UHMWPE possesses improved mechanical and thermal properties. The process for producing the UHMWPE includes contacting ethylene under polymerization conditions with a polymerization catalyst (a vanadium (III) complex bearing bidentate salicylaldiminato ligands) in the presence of TiO2/W nanofiller and a co-catalyst in a reactor. The reactor is charged with solvent (e.g., toluene) and heated to a temperature suitable for polymerization, e.g., about 30° C. Following heating, the ethylene monomer is fed into the reactor and allowed to saturate for at least 10 minutes, and a methyl aluminum dichloride co-catalyst (MADC) is added to initiate polymerization of ethylene. Polymerization is quenched by adding methanol containing HCl incorporated with titania-tungsten nanofillers, which is then washed and dried to yield UHMWPE.

Abstract: Multi-walled carbon nanotubes impregnated with iron nanoparticles are synthesized. The multi-walled carbon nanotubes are used as sorbents to remove benzene from water. The removal of benzene increases with the increase of impregnated iron percent in the multi-walled carbon nanotube.

Abstract: The titanium-impregnated carbon nanotubes for selenium removal provide a composition for removing or reducing the levels of selenium in water. The titanium-impregnated carbon nanotubes comprise a range of about 5 wt % titanium to 20 wt % titanium. A process for removing selenium from water includes the steps of placing the titanium-impregnated carbon nanotubes into contact with the water and adjusting the pH value of the water.

Abstract: The nanocomposite for removing selenium from water is multi-walled carbon nanotubes impregnated with iron. The nanocomposite is made by dissolving iron nitrate in ethanol, adding the carbon nanotubes, heating the mixture to evaporate the ethanol, and calcining the resulting nanocomposite. The carbon nanotubes preferably have a length and a diameter between 10 nm and 30 nm, and the iron is homogenously distributed in the nanotubes as nanoparticles of 1-2 nm diameter. The nanocomposite adsorbs selenium from aqueous solution. The pH of the aqueous solution may be adjusted to between 1 and 4, adsorption being most efficient at a pH of 1.

Abstract: The pressure sensitive adhesive is a copolymer of ethylene and propylene that has a maximum load between 6.4 N and 11.2 N in a lap joint shear strength test. The copolymer is prepared by mixing ethylene and propylene in the presence of a diimine nickel catalyst and polymethylaluminoxane (MAO) co-catalyst. The molar ratio of the ethylene to propylene feed is between 60:40 and 40:60. The polymerization is carried out at 30° C. and 1.3 bar. The polypropylene molar percentage in the resulting copolymer is between 42% and 88%, and the weight average molecular weight is between 24,917 and 33, 314 Da. The copolymer is an amorphous polymer having a glass transition temperature (Tg) between ?63° C. and ?66° C.

Abstract: The ethylene/propylene copolymer nanocomposite is a copolymer prepared by inclusion of a filler of nanoparticles of titania doped with iron that permits control over, and variation of, the overall polymeric properties. Through the addition of the TiO2/Fe nanofiller, the concentration of polypropylene in the copolymer is increased and the overall crystallinity is decreased. In order to make the copolymer, a TiO2/Fe titania-iron nanofiller is first mixed with a polymerization catalyst (a vanadium (III) complex bearing bidentate salicylaldiminato ligands) in a reactor. The reactor is then charged with solvent (e.g., toluene) and heated to a temperature suitable for polymerization, e.g., about 30° C. Following heating, a mixture of ethylene and propylene gases (in selected molar ratios) is fed into the reactor at a fixed pressure, and methyl aluminum dichloride co-catalyst (MADC) is added to initiate polymerization.

Abstract: The method of making high-density polyethylene with titania-iron nanofillers involves mixing a TiO2/Fe titania-iron nanofiller with a vanadium (III) complex bearing salicylaldiminato ligands polymerization catalyst in a reactor. The reactor is then charged with toluene and heated to a temperature of about 30° C. Following heating, ethylene is fed into the reactor at a fixed pressure, and a methyl aluminum dichloride cocatalyst is added to initiate in situ polymerization. Polymerization is quenched to yield high-density polyethylene with titania-iron nanofillers, which is then washed and dried. Through the addition of a TiO2/Fe nanofiller, the molecular weight, the crystallinity and the melting temperature of high-density polyethylene are all increased, while the polydispersity index (PDI) is decreased.