Fig. 10
From: Progress of tissue adhesives based on proteins and synthetic polymers
Reaction scheme for the synthesis of polymerizable PEG-co-poly(a-hydroxy acid) di- and tetraacrylates and hydrogels, as well as their degradation. (Adapted from Sawhney et al. Bioerodible Hydrogels Based on Photopolymerized Poly(Ethylene Glycol)-Co-Poly (α-Hydroxy Acid) Diacrylate Macromers. Macromolecules 1993;26:581 − 587. with permission from American Chemical Society [141])