Hyaluronan Immobilized Polyurethane as a Blood Contacting Material

Figure 5

Water absorption of different PU films; a: PU, b: PU-NH₂, c: PU-HA₁, d: PU-HA₄ in PBS (a), deionized water (b), (c) contact angle results.

(a)

(b)

(c)