Li, Meng Facile route to synthesize polyurethane hollow microspheres with size-tunable single holes. [electronic resource] - Langmuir : the ACS journal of surfaces and colloids Apr 2011 - 3229-32 p. digital Publication Type: Journal Article ISSN: 1520-5827 Standard No.: 10.1021/la104860b doi Subjects--Topical Terms: MicellesMicroscopy, Electron, ScanningMicroscopy, Electron, TransmissionMicrospheresNanotechnology--methodsPolyurethanes--chemistry