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Polyelectrolyte-complex multilayer membrane with gradient porous structure based on natural polymers for wound care
Wenwen Sun1, Guangkai Chen2, Fahe Wang3
1School of Material Science and Engineering, Changzhou University, Changzhou, Jiangsu 213164, PR China; Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing 100029, PR China.
This study developed a novel chitosan/alginate sponge-like membrane for wound care. The biocompatible material exhibits excellent porosity, swelling, and antibacterial properties, promoting cell growth for effective wound healing.
Area of Science:
- Biomaterials Science
- Polymer Chemistry
- Tissue Engineering
Background:
- Chitosan and alginate are biocompatible, biodegradable natural polymers extensively used in wound and burn management.
- Developing advanced wound dressings with enhanced properties is crucial for effective healing.
- Natural polymers offer promising alternatives to synthetic materials in biomedical applications.
Purpose of the Study:
- To prepare and characterize a novel sponge-like polyelectrolyte-complex multilayer membrane (PCMM) from chitosan and alginate.
- To evaluate the structural, physical, antibacterial, and cytotoxic properties of the developed PCMM for wound care applications.
- To investigate the potential of PCMM as a scaffold for cell attachment, growth, and proliferation.
Main Methods:
- Preparation of PCMM using a freeze-drying method.
- Characterization using Attenuated Total Reflectance Fourier Transform Infrared Spectroscopy (ATR-FTIR), X-ray Photoelectron Spectroscopy (XPS), and Field Emission Scanning Electron Microscopy (FE-SEM).
- Evaluation of porosity, swelling ratio, in vitro antibacterial activity against E. coli, and in vitro cytotoxicity.
Main Results:
- The PCMM exhibited a gradient porous structure and interpenetrating polymer networks.
- High porosity (up to 90%) and significant swelling ratios (22.4 in deionized water, 21.5 in ion-containing solution) were observed.
- The PCMM demonstrated obvious in vitro antibacterial activity against E. coli and was found to be non-toxic, supporting cell attachment, growth, and proliferation.
Conclusions:
- The novel chitosan/alginate PCMM possesses favorable structural and physical properties for wound dressing applications.
- The demonstrated antibacterial activity and biocompatibility suggest its potential for effective wound healing.
- This advanced biomaterial holds promise for use in advanced wound care and regenerative medicine.
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