نوع مقاله : مقاله پژوهشی
نویسندگان
1 گروه بیومواد، پژوهشکده نانو و مواد پیشرفته، پژوهشگاه مواد و انرژی، البرز، ایران
2 گروه محیط زیست و انرژی، پژوهشکده انرژی، پژوهشگاه مواد و انرژی، البرز، ایران
3 گروه نانومواد، پژوهشکده نانو و مواد پیشرفته، پژوهشگاه مواد و انرژی، البرز، ایران
4 گروه پوست، مرکز تحقیقات پوست و سلول های بنیادی، دانشگاه علوم پزشکی تهران، تهران، ایران
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
Introduction and Objectives: Hyaluronic acid is widely used in wound dressings due to its biocompatibility, moisture retention, and wound healing properties. However, its poor mechanical strength, limited stability in moist environments, and insufficient antibacterial activity restrict its clinical applications. This study aims to improve the performance of hyaluronic acid -based films by incorporating chitosan and employing glutaraldehyde and tannic acid as dual crosslinking agents. The novelty of this work lies in the simultaneous use of the two chemical modifiers.
Materials and Methods: Composite films were prepared by blending hyaluronic acid and chitosan at a defined ratio and chemically modified using glutaraldehyde and tannic acid. FTIR spectroscopy was used to evaluate chemical interactions and bond formation. Mechanical properties were assessed via tensile testing. Water contact angle, swelling ratio, cytotoxicity, and antibacterial activity were examined to evaluate biological performance.
Results: FTIR analysis confirmed new covalent and hydrogen bonding interactions leading to a stable crosslinked structure. Modified films exhibited a Young’s modulus of 1.5–2 MPa, tensile strength of 2 MPa, and a water contact angle of 45°, indicating enhanced mechanical strength and moderate hydrophilicity. The water absorption capacity reached 733%, and cell viability remained within 85–90% at the optimized glutaraldehyde concentration, confirming good biocompatibility. However, no significant antibacterial activity was observed.
Conclusion: The incorporation of chitosan and dual crosslinking with glutaraldehyde and tannic acid significantly enhanced the mechanical, wetting, and biocompatibility properties of hyaluronic acid-based films, making them promising candidates for wound dressing applications. Further enhancement of antibacterial activity, possibly by incorporating antibacterial nanoparticles, is recommended for broader clinical use.
کلیدواژهها [English]