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Published on: October 29, 2013
Superabsorbent crosslinked carboxymethyl cellulose-PEG hydrogels for potential wound dressing applications
Nádia S V Capanema1, Alexandra A P Mansur1, Anderson C de Jesus1
1Center of Nanoscience, Nanotechnology and Innovation - CeNano2I, Department of Metallurgical and Materials Engineering, Federal University of Minas Gerais, Brazil.
Environmentally friendly carboxymethyl cellulose (CMC) hydrogels were synthesized for wound healing. These superabsorbent polymer (SAP) materials, crosslinked with citric acid and blended with polyethylene glycol, show tunable properties and excellent cytocompatibility.
Area of Science:
- Biomaterials Science
- Polymer Chemistry
- Tissue Engineering
Background:
- Hydrogels are crucial for wound dressings and skin repair.
- Carboxymethyl cellulose (CMC) offers biocompatibility and biodegradability.
- Developing advanced hydrogels with tunable properties is essential for effective medical applications.
Purpose of the Study:
- To synthesize and characterize novel carboxymethyl cellulose (CMC)-based hydrogel membranes.
- To evaluate their potential as wound dressing and skin repair substitutes.
- To investigate the effect of crosslinking and blending on hydrogel properties.
Main Methods:
- Synthesis of CMC hydrogels with varying degrees of functionalization (DS=0.77 and 1.22).
- Chemical crosslinking using citric acid (CA) and blending with polyethylene glycol (PEG).
- Characterization using swelling tests, spectroscopy, electron microscopy, and nanomechanical analysis.
Main Results:
- Superabsorbent hydrogels (SAP) with swelling degrees from 100% to 5000% were produced.
- Citric acid concentration and PEG blending significantly influenced swelling and network formation.
- Spectroscopy confirmed CA crosslinking via CMC hydroxyl groups; PEG facilitated hybrid network formation.
- Morphology and nanomechanical properties (elastic moduli 0.08-2.0 GPa) were tunable.
- In vitro studies showed over 95% cell viability with HEK293T cells, indicating cytocompatibility.
Conclusions:
- Environmentally friendly CMC-based hydrogels were successfully developed.
- Tunable swelling, mechanical properties, and excellent cytocompatibility make them promising for wound healing.
- The combination of CMC, CA, and PEG offers a versatile platform for advanced biomaterials.
