In Situ Synthesis of Poly(methyl methacrylate)/SiO₂ Hybrid Nanocomposites via “Grafting Onto” Strategy Based on UV Irradiation in the Presence of Iron Aqueous Solution

Table 2

Comparison of UV-initiated polymerization initiated by FeCl₃ and Irgacure 2959.

Sample	Particle size (nm)	PDI	Reaction time (min)	Conversion (%)^a	Grafting (%)^b
S-3	32	0.289	10	95.4	98.0
S-6	27	0.352	10	75.7	85.8

^aConversion values determined using gravimetric analysis.
^bPolymer grafting (%) is calculated from (2).