An NMR Investigation of Phase Structure and Chain Dynamics in the Polyethylene/Montmorillonite Nanocomposites

Table 1

Ethylene polymerization in the presence of O-MMT and the characterization results of PE/MMT hybrid materials^a.

Run	MMT Conc. in feed; g · L^−1	Polymer yield; g	Activity; Kg PE/molCat · h	Mw; 10^5 g · mol^−1	Mw/Mn	MMT in PE^b; wt.%	Sample notation
1 #	0	22.0	2200	4.81	3.3	0	PE
2 #	0.50	10.9	1090	2.19	3.5	1.8	PEMT18
3 #	0.45	5.9	590	1.37	2.9	7.1	PEMT71

^aPolymerization conditions: solvent 400 mL toluene. Ethylene pressure 0.1 MPa. Cat. conc. In the feed 25 μmol Ti · L⁻¹. Polymerization time 60 mins.
^bMMT content in the polyethylene matrix was measured by TGA.