Synthesis of Polymer Grafted Magnetite Nanoparticle with the Highest Grafting Density via Controlled Radical Polymerization

Table 4 Summary of grafting density results from MNs

Initiator anchoring chemistry	Monomer	Polymerization	Grafting density in chain(s)/nm²	Inference
Phosphonic acid	Benzyl methacrylate	30 °C, ATRP CuBr/PMDETA	~2.0	Fastest polymerization
Phosphonic acid	Methyl methacrylate	30 °C, ATRP CuBr/PMDETA	~1.0	Faster polymerization
Phosphonic acid	Styrene	100 °C, ATRP CuBr/PMDETA	~0.7	Slow polymerization