Polypropylene Nanocomposites Obtained by In Situ Polymerization Using Metallocene Catalyst: Influence of the Nanoparticles on the Final Polymer Morphology

Table 1

Results of propene polymerization in the presence of SN used as support of the metallocene catalyst.

Process	Zr (%) (fixed)	Mv (Kg·Mol^−1)	Tm (°C)	Tc (°C)	χ (%)	ρ (g/cm^3)	(%)	SN content (%)
Pure PP	—	16	125	92	31	0.25	92	—
Route 1	—	16	126	95	33	0.28	91	2.0
Route 2 Cat/MAO/SN	0.45	12	126	97	34	0.30	91	2.0

Mv: Molecular Weight; Tm: Melting temperature, χ: Crystallinity percentage, ρ: Apparent density, Polymerization conditions: mol Zr: 1.2 × 10⁻⁵; Al/Zr: 1000; polymerization temperature: 60°C, Pressure: 2 bar. m: The percentage of dyads, ^aDetermined by ¹³C-NMR.