Surface-Initiated Atom Transfer Radical Polymerization of Magnetite Nanoparticles with Statistical Poly(tert-butyl acrylate)-poly(poly(ethylene glycol) methyl ether methacrylate) Copolymers

Table 2

Reaction time, conversions, and the compositions of P[(t-BA)-stat-PEGMA] copolymers.

Type of copolymer	Reaction time (min)	% conversion^a		% in the copolymer^b
		t-BA	PEGMA	t-BA	PEGMA
100 : 0 of t-BA/PEGMA	240	52	0	100	0
75 : 25 of t-BA/PEGMA	120	37	58	66	34
50 : 50 of t-BA/PEGMA	120	42	64	40	60
25 : 75 of t-BA/PEGMA	60	54	65	22	78

^aReaction conversions were calculated from ¹H NMR spectroscopy.
^b%P(t-BA) in the copolymer = [%Conv × %feed]/[%Conv × %feed + %Conv_PEGMA × %feed _PEGMA]. % PPEGMA in the copolymer was calculated in a similar fashion.