Functionalized polystyrene latex particles were obtained either by seed particle functionalization or by the shotgrowth procedure using 2,2'-azobis (2-amidino-propane) dihydrochloride as an initiator and vinylbenzylamine hydrochloride as a cationic monomer. The capabilities of both processes to produce functionalized particles in terms of functionalizafion yields coming from surface amino group titrations were compared. Different titration methods were performed and a new technique was introduced using fluorescamine.
EXPERIMENTAL MaterialsUnless stated otherwise, reagents and solvents were used as received, water was of milli-Q grade (Millipore SA, France) and was boiled for 1 hr under a nitrogen stream before use. Styrene (Janssen Chemica, France) was distilled under reduced pressure, 2-2'-azobis (2 amidino-propane) dihydrochloride (V-50), kindly provided by Wako Chemical GmbH, Germany, was recrystallized from water-
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.