Sustained release behavior for poly (hydroxybutyrate hydroxyvalerate)/polylactide blend materials as carriere

INTRODUCTIONPolyhydroxybutyrate (PHB) and it's copolymer PHBV achieved by the biosynthetic pathway, has attracted much attention as an alternation biodegradable materials. They have the excellent biocompatibility and proper degradation periods by optimization of pertinent molecular weight and copolymer compositions.