Cryostructuring of Polymeric Systems: 68. Evaluation of Poly(vinyl alcohol) Composite Cryogels Filled with Poly(3-hydroxybutyric acid)-Based Microspheres of Different Porous Morphology as Potential Delivery Systems for Drugs of Various Water-Solubility

Poly(3-hydroxybutyric acid)-based microspheres of two types, with and without macropores, were prepared; their morphology and particle size were evaluated. These microspheres were entrapped as disperse fillers into the bulk of macroporous cryogels based on poly(vinyl alcohol) (PVA). It was found tha...

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Bibliographic Details
Published in:Gels 2024-11, Vol.10 (11), p.734
Main Authors: Michurov, Dmitrii A, Andreasyan, Gagik A, Lozinsky, Vladimir I
Format: Article
Language:English
Subjects:
Alcohol
composite cryogels
Composite materials
Drug carriers
Drug delivery systems
drug release
Entrapment
Fillers
Ibuprofen
Mechanical properties
Microspheres
Morphology
Nonsteroidal anti-inflammatory drugs
Particulate composites
physico-mechanical properties
poly(3-hydroxybutyric acid)
poly(vinyl alcohol)
Polymers
Polyvinyl alcohol
porous microspheres
Prolongation
Sodium salts
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Summary:Poly(3-hydroxybutyric acid)-based microspheres of two types, with and without macropores, were prepared; their morphology and particle size were evaluated. These microspheres were entrapped as disperse fillers into the bulk of macroporous cryogels based on poly(vinyl alcohol) (PVA). It was found that the rigidity of the resultant composite cryogels increased markedly as compared to that of unfilled cryogels of the same PVA concentration. The resulting composites were further tested for their potential to act as drug carriers. With that, simvastatin was included into the filler particles directly in the course of their preparation, followed by entrapment of such drug-loaded microspheres into the PVA cryogel. In turn, ibuprofen sodium salt was introduced into the preliminary prepared cryogels filled with the drug-free microspheres. The experimental study of drug release kinetics showed that due to the non-covalent interactions of both simvastatin and ibuprofen sodium salt with the particles of discrete phase, prolongation of the release processes was observed.
ISSN:2310-2861
2310-2861
DOI:10.3390/gels10110734