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Journal for Biophysical Chemistry

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Table 2 Surface roughness, surface wettability and cell adhesion on the pristine PCL and surface-functionalized PCL surfaces

From: Immobilization of Gelatin onto Poly(Glycidyl Methacrylate)-Grafted Polycaprolactone Substrates for Improved Cell–Material Interactions

Samples Surface roughness (R aa , mean ± SD nm) Cell adhesion ratiob (%) Surface wettability (°) Representative images of WCAc
Pristine PCL 19.3 ± 1.7 49.1 ± 7.2 93 ± 4
PCL-NH2 30.2 ± 4.5 63.0 ± 4.4 66 ± 3
PCL-gelatin 34.5 ± 1.8 116.1 ± 3.5 49 ± 3
PCL-g-P(GMA)1 56.9 ± 4.4 50.1 ± 3.3 62 ± 3
PCL-g-P(GMA)2 59.4 ± 2.9 53.2 ± 4.0 61 ± 2
PCL-g-P(GMA)1-c-gelatin 67.8 ± 6.2 127.2 ± 3.8 37 ± 2
PCL-g-P(GMA)2-c-gelatin 72.3 ± 3.6 134.4 ± 4.4 35 ± 3
  1. aRa denotes a root-mean-square surface roughness, SD denotes standard deviation
  2. bCell adhesion ratio was calculated by (N1/N0×100 %), where N1 is the number cells on the PCL surfaces after 24 h, and N0 is the initial number of cells seeded into each well. The cell adhesion ratio of gelatin-coated coverslips is about 131.1 ± 2.6
  3. cWCA denotes static water contact angles
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