ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Poly(vinyl alcohol)/(hyaluronic acid-g-kappa-carrageenan) hydrogel as antibiotic-releasing wound dressing

Zehra Özbaş, Bengi Özkahraman, Gülsen Bayrak, Aysun Kılıç Süloğlu, Işık Perçin, Filiz Boran, and Emel Tamahkar

Chemical Engineering Department, Faculty of Engineering, Cankiri Karatekin University, Cankiri, Turkey

E-mail: zehraozbas@karatekin.edu.tr

Received: 18 June 2021  Accepted: 14 August 2021

Abstract:

The aim of this research was to investigate the potential of ampicillin-loaded hydrogels based on polyvinyl alcohol (PVA), hyaluronic acid (HA) and kappa-carrageenan (_K-Carr) as an antibiotic-releasing wound dressing. Firstly, the novel polymers (HA-g-_K-Carr) were synthesized by grafting of HA onto _K-Carr using 4-dimethylaminopyridine/1-(3-dimethylaminopyl)-3-ethyl-carbodiimide hydrochloride as catalyst system via esterification reaction. The characterization of the polymer structure was performed by Fourier transform infrared spectrum (FTIR), proton nuclear magnetic resonance and thermogravimetric analysis. Secondly, PVA/(HA-g-_K-Carr) hydrogel with/without loading of ampicillin molecules was formed via freeze–thawing method since PVA/K-Carr and PVA/HA hydrogels were also fabricated as control groups. The hydrogels were subjected to characterizations with FTIR and X-ray diffractometer. PVA/(HA-g-_K-Carr) hydrogel demonstrated the highest swelling amount and highest ampicillin release amount reaching an equilibrium value after 480 min rather than the other hydrogels. Also, PVA/(HA-g-_K-Carr) hydrogel exhibited inhibition zone against Escherichia coli and Staphylococcus aureus and no cytotoxic effect for L929 cells. All the results showed that PVA/(HA-g-_K-Carr) hydrogels are good candidates for wound dressing applications.

Keywords: Kappa-Carrageenan (K-Carr); Hyaluronic acid; Wound dressing with antibiotic release; Antibacterial activity; Cell viability

Full paper is available at www.springerlink.com.

DOI: 10.1007/s11696-021-01824-3

Chemical Papers 75 (12) 6591–6600 (2021)