Preparation of nanosheet polyethylene with heterogeneous metallocene catalyst and formation mechanism of nanosheet polyethylene.
Silica with small and regular pore sizes was synthesized by hydrothermal crystallization and investigated with thermogravimetric analysis, X-ray diffraction, Fourier transform infrared spectroscopy, N2 adsorption-desorption, and scanning electron microscopy (SEM). The ethylene polymerization was carried out with the silica-supported metallocene catalyst, and the morphology of the resultant polyethylene was investigated with SEM. It was found that the silica could break up into sheet fragments instantaneously during polymerization and the polyethylene could replicate it to obtain nanosheet polyethylene. A possible formation mechanism of the nanosheet polyethylene is proposed.
Dong
Xiaochen
X
State Key Laboratory of Polymer Reaction Engineering, College of Materials Science and Chemical Engineering, Zhejiang University, Hangzhou 310027, China.
Wang
Li
L
Zhou
Junfeng
J
Deng
Libo
L
Huo
Jia
J
Zhang
Chunlei
C
D002384:Catalysis; D008855:Microscopy, Electron, Scanning; D049329:Nanostructures; D009942:Organometallic Compounds / Q000737:chemistry*; D020959:Polyethylene / Q000737:chemistry*; D014961:X-Ray Diffraction
D009942:Organometallic Compounds; C013108:metallocene; D020959:Polyethylene