Waterborne poly (urethane-urea) s films as a sustained release system for ketoconazole

Abstract: Ketoconazole (KTZ) was incorporated in waterborne poly (urethane-urea) s dispersions (WPUU), aiming at the production of films for drug sustained release. Dispersions based on poly (ethylene glycol-block-propylene glycol) (PEG-b-PPG) (four monomers with different contents of PEG hydrophilic segments), poly (propylene glycol), isophorone diisocyanate, dime-thylolpropionic acid and hydrazine were produced and characterized by apparent viscosity and average particle size (APS). Cast films-drug interaction was investigated by Fourier-Transform infrared spectrometry (FTIR). In vitro dissolution assays were performed in simulated gastrointestinal juices, followed by application of kinetic models. Stable pseudoplastic dispersions, with APS between 27 to 320 nm were obtained. FTIR from KTZ-loaded films indicated interactions between polymer and drug. In vitro release of KTZ was achieved above 80%, notably influenced by PEG-based segments content up to 2 h, followed by sustained release for 8 h. Higuchi’s and first-order equations described the drug kinetic profile, as diffusion of the drug and erosion of the swollen polymer, respectively.

Angaben zum Objekt

• Standort: Deutsche Nationalbibliothek Frankfurt am Main
• Umfang: Online-Ressource
• Sprache: Englisch

Verweise und Beziehungen

• Erschienen in: Waterborne poly (urethane-urea) s films as a sustained release system for ketoconazole ; volume:19 ; number:1 ; year:2019 ; pages:168-180 ; extent:13 ; e-Polymers ; 19, Heft 1 (2019), 168-180 (gesamt 13)

Beteiligte, Orts- und Zeitangaben

• Urheber: Vieira, Italo Rennan Sousa ; Miranda, Gisele dos Santos ; Ricci-Júnior, Eduardo ; Delpech, Marcia Cerqueira

Weitere Informationen

• DOI: 10.1515/epoly-2019-0018
• URN: urn:nbn:de:101:1-2412151612433.489407317465
• Rechteinformation: Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
• Letzte Aktualisierung: 15.08.2025, 07:28 MESZ