Antimicrobial hydrogels, methods of preparation thereof, and articles therefrom

摘要

A covalently crosslinked hydrogel comprises a) three or more divalent poly(alkylene oxide) chains P' covalently linked at respective first end units to a branched first core group C', b) three or more divalent poly(alkylene oxide) chains P'' covalently linked at respective first end units to a branched second core group C'', the chains P'' comprising respective second end units which are covalently linked to between 0% and 100% of respective second end units of chains P' by divalent linking groups L'', and c) at least one pendant cationic block copolymer chain A'-B'. A'-B' comprises i) a divalent block A' comprising a poly(alkylene oxide) backbone chain having an end unit covalently linked to a second end unit of one of the chains P' by a divalent linking group L', and ii) a monovalent block B' comprising a first repeat unit, the first repeat unit comprising a backbone carbonate group and a cationic side chain group.