Water-soluble poly(3-hydroxyalkanoate) containing ionic groups were designed by two successive photoactivated thiol-ene reactions. Sodium-3-mercapto-1-ethanesulfonate (SO 3 - ) and poly(ethylene glycol) (PEG) methyl ether thiol were grafted onto poly(3-hydroxyoctanoate- co -3-hydroxyundecenoate) …