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Journal for Biophysical Chemistry

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Fig. 1 | Biointerphases

Fig. 1

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

Fig. 1

The density of amine groups of the aminolyzed PCL film surface as a function of aminolysis time as determined by the ninhydrin assay. The analysis reaction of PCL films proceeded at 40 °C in 10 wt% 1,6-hexanediamine/2-propanol solution. Error bars represent the standard deviation over three separate PCL films. The optimized aminolysis time was observed at 1 h with NH2 density at about 0.265 μmol/cm2

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