Alternatives have been developed in recent years, for example, photo crosslinkable polypropylene fumarate, but degradation has only been evaluated with sodium hydroxide solutions (0.1 M NaOH) , not at neutral and slightly acidic pH values more commonly encountered in biological applications. Other examples include the mixed polymerization of poly(ethylene glycol)-poly(lactic acid) (PLA) diacrylate macromonomers with thiols . Indeed thiol-based monomers with ester moieties integral in the network backbone have shown much promise in this field due to their superior mechanical performance and suitable curing kinetics . However, hydrophobic aliphatic esters also degrade very slowly in ambient conditions . Vinyl esters reportedly take many years at neutral conditions and stimulated in NaOH , and vinyl carbonates have been observed only to degrade at extreme pH values (1M HCl and 1M NaOH). A recently reported carbonate with "fast" degradation was also only studied in 1M NaOH . Hence there is still a need in the field for degradable photopolymers with degradation properties that are matched to their application. This is paramount, for example, in the highly important field of tissue regeneration, whereby scaffolds must be carefully tuned to both the mechanical properties and growth rate of neotissue , and it remains a considerable challenge to design robust photopolymers with mild, ambient degradability .