•  
  •  
 

Turkish Journal of Chemistry

Abstract

In this study, gamma-irradiated graphene oxide was incorporated into novel pH-responsive hydrogels. The biopolymer kappa carrageenan was blended with polyvinyl alcohol in a silane crosslinked biopolymer, and the effect of gamma irradiation dosage was studied. Nonhazardous tetraethoxysilane (TEOS) was used as a crosslinker. The hydrogels were characterized with chemical and thermal analysis, scanning electron microscopy, and structural analysis using a variety of analytical tools. The swelling behavior of fabricated hydrogels was assessed in various solution media. As the pH of the media increased, the swelling ratio of hydrogels decreased. All fabricated hydrogels had a high swelling ratio at acidic and neutral pH levels, with a decrease in swelling observed at basic pH. The pH-sensitive response at pH 7 make these hydrogels of potential use for controlled injectable-based drug delivery. Hydrogels with the highest swelling percentage were successfully loaded with letrozole (LTZ) to investigate the release mechanism. The drug release test was conducted in PBS and it showed that hydrogel released the LTZ in a regulated manner up to 99% in 4 h. These findings suggest that the hydrogels could serve as intelligent, responsive materials for controlled drug delivery and other biomedical applications at physiological pH.

Author ORCID Identifier

SAMINA SARWAR: 0000-0002-5960-5843

SUMAYYA AZIZ: 0000-0000-0000-0001

ASIF RAZA: 0000-0003-3069-8027

TARIQ YASIN: 0000-0002-9121-4041

NUZHAT SHAFI: 0000-0003-0806-1695

DOI

10.55730/1300-0527.3760

Keywords

K-Carrageenan, γ-irradiated Graphene Oxide, hydrogel, nanodrug carrier

First Page

647

Last Page

662

Publisher

The Scientific and Technological Research Council of Türkiye (TÜBİTAK)

Creative Commons License

Creative Commons Attribution 4.0 International License
This work is licensed under a Creative Commons Attribution 4.0 International License.

Download

Share

COinS