Journal for Biophysical Chemistry
Table 1 Characteristics of the four copolymers and the films after surface assembly: molecular weights, film thicknesses, adsorbed masses, surface densities of molecules, side chains, and monomers
From: Comparative Stability Studies of Poly(2-methyl-2-oxazoline) and Poly(ethylene glycol) Brush Coatings
Entry no. | Analyzed parameter | PLL-PMOXA4 (α = 0.33) | PLL-PMOXA8 (α = 0.25) | PLL-PEG2 (α = 0.31) | PLL-PEG5 (α = 0.28) | Nb2O5 |
|---|---|---|---|---|---|---|
1 | Molecular weight of polymer (kDa) | 140 | 204 | 72 | 145 | n/a |
2 | Polymer thickness (nm) | 2.07 ± 0.17 | 2.36 ± 0.04 | 1.30 ± 0.03 | 2.47 ± 0.10 | n/a |
3 | Polymer mass on the surface (ng/cm2) | 210 ± 10 | 240 ± 28 | 152 ± 16 | 245 ± 75 | n/a |
4 | Molecular surface density (×10−3 nm−2), | 8.7 ± 0.9 | 7.1 ± 0.8 | 12.7 ± 1.3 | 10.2 ± 3.2 | n/a |
5 | Side chain surface density (nm−2) | 0.28 ± 0.01 | 0.17 ± 0.02 | 0.39 ± 0.05 | 0.27 ± 0.09 | n/a |
6 | Monomer surface density (nm−2) | 14 ± 1 | 16 ± 2 | 18 ± 2 | 31 ± 10 | n/a |
7 | Serum thickness on initial polymer layer (nm) | 0.03 ± 0.03 | 0.02 ± 0.03 | 0.02 ± 0.01 | 0.01 ± 0.01 | 6.4 ± 0.3 |
8 | Serum mass on initial polymer layer (ng/cm2) | 1 ± 2 | 0 ± 1 | 2 ± 3 | 0 ± 1 | 223 ± 22 |