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

Table 3

Percentages of MNP and the copolymers in each composite.

Type of composite	% char yield^a	% in the composite
		MNP	BTPAm	The copolymer
Bare MNP	88	100	—	—
BTPAm-immobilized MNP	81	93	7	—
P[(t-BA)-stat-PEGMA]-coated MNP
(100 : 0)	63	71	6	23
(75 : 25)	55	63	5	32
(50 : 50)	52	59	5	36
(25 : 75)	53	60	5	35

^aIt is determined via TGA technique.