Figure 14
From: Polyhydroxyalkanoates: opening doors for a sustainable future
(a) Synthesis of PHB/PEG/PPG poly(ether ester urethane) block copolymers, and (b) Schematic of associated micelle model depicting network polymer packing gelation; (c) Sol-gel-sol transition of the copolymer aqueous solution with increasing temperature. Adapted from reference 69 (2007 American Chemical Society). (d) Protein release profiles for PHB/PEG/PPG poly(ether ester urethane) hydrogels of different copolymer compositions. (*: 3 wt%, ♦: 4 wt%, ▪: 5 wt%). Adapted from reference 71 (2007 Elsevier).
