. Author manuscript; available in PMC: 2015 Jan 8.

Published in final edited form as: Clin Oral Implants Res. 2011 Jan 18;22(8):865–872. doi: 10.1111/j.1600-0501.2010.02074.x

Table 1.

Molecular weight, grafting ratio, peptide functionalization, polymer/protein adsorption and peptide surface density for all polymers used in this study

	PEG	RGD	KRSR	KSSR
Molecular weight PLL (kDa)	15.9	15.9	15.9	15.9
Molecular weight lysine unit (kDa)	0.128	0.128	0.128	0.128
Molecular weight peptide (kDa)	–	1.222	1.197	1.128
Molecular weight entire polymer (kDa)	99.1	69.4	75	63.2
Grafting ratio, g [–] peptide-functionalized^*	3.3	4	9.3	9.7
PEG-chains (%)^*	–	8	76.3	50.1
Polymer adsorption (ng/cm²)^†	175	175	135	143
Protein adsorption (ng/cm²)^†	<5	<5	<5	<5
Peptide surface density, ρ_ps (pmol/cm²)	–	5.1	20	15.8

Measured with NMR technique.

^†

Measured with OWLS technique.