title: Classification and characteristics of polymeric controlled-release systems.
abstract: The great importance of controlled release for the delivery of a variety of bioactive agents is evidenced by an increasing number of patents and commercial products that employ this technology. This article reviews the different controlled-release systems and their operating mechanisms.
authors.affiliation: National Technical University of Athens, Greece. andreo@orfeas.chemeng.ntua.gr
authors.forename: A G
authors.initials: AG
authors.lastname: Andreopoulos
mesh_terms: D001672:Biocompatible Materials; D001673:Biodegradation, Environmental; D016503:Drug Delivery Systems / Q000295:instrumentation; D006801:Humans; D011108:Polymers / Q000145:classification*
chemical_list: D001672:Biocompatible Materials; D011108:Polymers