King Fahd University of Petroleum and Minerals

S-oil Corporation

King Abdulaziz City for Science and Technology

Mamdouh Ahmed Al-Harthi

Mukarram Zubair

Osamah Awadh Bin-Dahman

Sadhan Kumar De

Farrukh Shehzad

Sung-Gil Hong

Hassam Mazhar

Reyad Awwad Khalaf Shawabkeh

Jobin Jose

Omer Bin Sohail

Muhammad Daud

Naim Moh'd Abdallah Faqir

Mostafizur Rahaman

Mohammad Ba Shammakh

Masiullah Jabarullah Khan

Mousab Salah Aldeen Mirghani

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&#xb0; C. The zirconocene complex is supported on the LDH to form a supported catalyst complex in the first mixture.

Method of making a polyolefin

A method for producing a polyethylene nanocomposite by polymerizing ethylene in a polymerization mixture that contains a graphene-layered double hydroxide nanocomposite, a metallocene catalyst, an alkylaluminoxane co-catalyst, and an organic solvent to form a polyethylene nanocomposite in which the graphene-layered double hydroxide nanocomposite is dispersed in a matrix of polyethylene and wherein the graphene-layered double hydroxide nanocomposite contains 1 to 7 wt. % graphene relative to a total weight of the graphene-layered double hydroxide nanocomposite.

In-situ polymerization method for producing a polyethylene nanocomposite

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.

Method of making a polyolefin nanocomposite

Nanocomposite films comprising carbon nanotubes dispersed throughout a polymer matrix and further comprising at least two surfaces with differing amounts of carbon nanotubes and differing electrical resistivity values are provided. Nanocomposite films comprising a polymer layer, a conductive nanofiller layer, and a polysaccharide layer having antistatic properties are provided. In particular, nanocomposites comprising polyvinyl alcohol as the polymer, graphene as the conductive nanofiller and starch as the polysaccharide are provided. In addition, processes for forming the nanocomposites, methods for characterizing the nanocomposites as well as applications in or on electrical and/or electronic devices are provided.

Process for forming a nanocomposite film

Nanocomposite film comprising cellulose and a conductive nanofiller, and method of making

Methods of preparing high-density polyethylene (HDPE) nanocomposites by in situ polymerization with a zirconocene catalyst, a methylaluminoxane cocatalyst, a calcium zirconate nanofiller in a solvent. The calcium zirconate nanofiller, which is dispersed across the polyethylene matrix, is found to enhance catalyst activity, and other properties of the HDPE nanocomposites produced, including but not limited to flame retardancy, crystallinity and surface morphology.

Polymerization process for making a polyethylene nanocomposite

Method for making polyvinyl alcohol/carbon nanotube nanocomposite film

Methods of preparing high-density polyethylene (HDPE) nanocomposites by in situ polymerization with a zirconocene catalyst, a methylaluminoxane cocatalyst, a calcium zirconate nanofiller in a solvent. The calcium zirconate nanofiller, which is dispersed across the polyethylene matrix, is found to enhance catalyst activity, and other properties of the HDPE nanocomposites produced, including but not limited to flame retardency, crystallinity and surface morphology.

Process for making a nanocomposite and a polyethylene nanocomposite made therefrom

Method for forming a polyethylene nanocomposite

Nanocomposite films and methods of preparation thereof

A method for forming a blend including graphene nanoparticles and a poly(styrene-co-methylmethacrylate), where the method includes melt mixing the poly(styrene-co-methylmethacrylate) and the graphene nanoparticles to obtain a nanocomposite and exposing the nanocomposite to microwave irradiation to bond the methyl methacrylate copolymer to the graphene nanoparticles, in which a content of the graphene nanoparticles is from 0.05 to 2 wt % based on the nanocomposites. A blend composition, including graphene nanoparticles and a poly(styrene-co-methylmethacrylate), where the graphene nanoparticles are dispersed in the poly(styrene-co-methylmethacrylate), the graphene nanoparticles are modified with microwave induced defects, and the free radicals of poly(styrene-co-methylmethacrylate) is bonded to the graphene nanoparticles at the defects.

Exfoliated graphene/P(S-CO-MMA) nanocomposite

Nanocomposite films comprising conductive nanofiller dispersed throughout a polymer matrix and further comprising at least two surfaces with differing amounts of filler and differing electrical resistivity values are provided. In particular, nanocomposites comprising polyvinyl alcohol as the polymer matrix and nanosheets and/or nanoplatelets of graphene as the conductive filler are provided. In addition, a process for forming the nanocomposites, methods for characterizing the nanocomposites as well as applications in or on electrical and/or electronic devices are provided.

Nanocomposite films with conducting and insulating surfaces

Method for polymerizing ethylene to form a high density polyethylene nanocomposite

Method of forming a surface-modified nanocomposite

A method for enhancing an interaction between graphene nanoparticles and a poly(styrene-co-methylmethacrylate), including modifying graphene with nitric acid to form graphene nanoparticles surface modified with one or more oxygen functionalities, melt blending the poly(styrene-co-methylmethacrylate) and the modified graphene nanoparticles to obtain a nanocomposite, and exposing the nanocomposite to microwave irradiation to form defects in the graphene nanoparticles. A blend composition, including graphene nanoparticles and a poly(styrene-co-methylmethacrylate), where the graphene nanoparticles are dispersed in the poly(styrene-co-methylmethacrylate), and the graphene nanoparticles are surface modified with oxygen functionalities.

Growing community of inventors

Dhahran, Saudi Arabia

Mamdouh Ahmed Al-Harthi