Introducing a flexible drug delivery system based on poly(glycerol sebacate)-urethane and its nanocomposite: potential application in the prevention and treatment of oral diseases

Tirgar M., Hosseini H., Jafari M., Shojaei S., Abdollahi A., Jafari A., ...More

JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION, vol.33, no.4, pp.443-464, 2022 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 33 Issue: 4
  • Publication Date: 2022
  • Doi Number: 10.1080/09205063.2021.1992588
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, BIOSIS, Biotechnology Research Abstracts, CAB Abstracts, Chemical Abstracts Core, Communication Abstracts, Compendex, EMBASE, INSPEC, MEDLINE, Metadex, Veterinary Science Database, Civil Engineering Abstracts
  • Page Numbers: pp.443-464
  • Keywords: Poly(glycerol sebacic)-urethane, Cloisite@30B, bionanocomposite, drug delivery, tissue engineering, gum disease, POLY GLYCEROL-SEBACATE, BACTERIAL CELLULOSE, BIODEGRADABLE ELASTOMERS, CLAY NANOCOMPOSITES, AEROGEL, OXIDE, BIOMATERIALS, FABRICATION, SCAFFOLDS, HYDROGEL
  • Hacettepe University Affiliated: Yes


In this study, a novel biopolymer based on poly(glycerol sebacic)-urethane (PGS-U) and its nanocomposites containing Cloisite@30B were synthesized by facile approach in which the crosslinking was created by aliphatic hexamethylene diisocyanate (HDI) at room temperature and 80 degrees C. Moreover, metronidazole and tetracycline drugs were selected as target drugs and loaded into PGSU based nanocomposites. A uniform and continuous microstructure with smooth surface is observed in the case of pristine PGS-U sample. The continuity of microstructure is observed in the case of all bionanocomposites. XRD result confirmed an intercalated morphology for PGSU containing 5 wt% of clay nanoparticles with a d-spacing 3.4 nm. The increment of nanoclay content up to 5%, the ultimate tensile stress and elastic modulus were obtained nearly 0.32 and 0.83 MPa, which the latter was more than eight-fold than that of pristine PGS-U. A sustained release for both dugs was observed by 200 h. The slowest and controlled drug release rate was determined in the case of PGSU containing 5 wt% clay and cured at 80 degrees C. A non-Fickian diffusion can be concluded in the case of tetracycline release via PGS-U/nanoclay bionanocomposites, while a Fickian process was detected in the case of metronidazole release by PGS-U/nanoclay bionanocomposites. As a result, the designed scaffold showed high flexibility, which makes it an appropriate option for utilization in the treatment of periodontal disease.