Research Article
Preparation of a Microporous Polyurethane Film with Negative Surface Charge for siRNA Delivery via Stent
Figure 5
Images and contact angles of water droplets on the porous PU film (a), on a PU film coated with 0.1% P(MMA-co-MAA) solution (b), and on a PU film coated with 2% P(MMA-co-MAA) (c).
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(b) |
(c) |