Table 2.

Physical-chemical characterization of each MNP type with different feed ratios of heparin and PEG.

MNP	Size distribution (nm)	Zeta Potential (mV)	[PEG] μg/mg Fe	PEG/MNP (molecules/p article)	[Heparin] μg/mg Fe
D	101.4 ± 3.7	−1.4 ± 0.2	N/A	N/A	N/A
DN	143.8 ± 4.3	+42.7 ± 4.4	N/A	N/A	N/A
DNPH1	164.9 ± 7.8	−29.1 ± 3.3	4.8 ± 0.8	81	95.4 ± 12.3
DNPH2	166.6 ± 7.4	−20.3 ± 2.3	12.5 ± 1.7	209	78.4 ± 9.2
DNPH3	162.2 ± 9.5	−8.9 ± 1.7	19.2 ± 4.1	322	51.9 ± 7.6
DNPH4	171.4 ± 6.7	−3.6 ± 0.4	23.2 ± 4.9	387	39.6 ± 4.5