US 11,753,509 B2
In-situ polymerization method for producing a polyethylene nanocomposite
Mamdouh A. Al-Harthi, Dhahran (SA); and Muhammad Daud, Dhahran (SA)
Assigned to KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS, Dhahran (SA)
Filed by KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS, Dhahran (SA)
Filed on Nov. 14, 2018, as Appl. No. 16/190,211.
Claims priority of provisional application 62/643,529, filed on Mar. 15, 2018.
Prior Publication US 2019/0284350 A1, Sep. 19, 2019
Int. Cl. C08L 23/06 (2006.01); C08J 5/00 (2006.01)
CPC C08J 5/005 (2013.01) [C08J 2323/06 (2013.01)] 19 Claims
 
1. A method for producing a polyethylene nanocomposite, comprising:
polymerizing ethylene in a polymerization mixture comprising a graphene-layered double hydroxide nanocomposite, a metallocene catalyst, an alkylaluminoxane co-catalyst, and an organic solvent to form the polyethylene nanocomposite;
wherein the polyethylene nanocomposite comprises the graphene-layered double hydroxide nanocomposite dispersed in a matrix of polyethylene;
wherein the graphene-layered double hydroxide nanocomposite comprises a layered double hydroxide and 1 to 7 wt. % graphene relative to a total weight of the graphene-layered double hydroxide nanocomposite; and
wherein the layered double hydroxide has a lamellar morphology of adhered hexagonal nanoplatelets having a particle size of 40 to 100 nm.