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Published on: January 2, 2014
Chitin nanofiber-coated biodegradable polymer microparticles via one-pot aqueous process
Yuto Kaku1, Noriyuki Isobe1, Nanako O Ogawa2
1Department of Biomaterial Sciences, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan; Biogeochemistry Research Center (BGC), Research Institute for Marine Resources Utilization (MRU), Japan Agency for Marine-Earth Science and Technology (JAMSTEC), 2-15 Natsushima-cho, Yokosuka, Kanagawa 237-0061, Japan.
Biodegradable polymer microparticles were coated with chitin nanofibers (ChNFs) using a simple aqueous method. This surface modification enhances adsorption properties and offers versatile applications in cosmetics, biotech, and drug delivery.
Area of Science:
- Materials Science
- Biotechnology
- Polymer Chemistry
Background:
- Surface modification of biodegradable microparticles is crucial for applications in cosmetics, biotechnology, and drug delivery.
- Chitin nanofibers (ChNFs) offer promising functionality, including biocompatibility and antibiotic properties, for surface tailoring.
Purpose of the Study:
- To develop a facile method for densely coating biodegradable polymer microparticles with Chitin Nanofibers (ChNFs).
- To investigate the properties and potential applications of ChNF-coated microparticles.
Main Methods:
- Biodegradable polymer microparticles (Cellulose Acetate - CA) were coated with ChNFs via a one-pot aqueous process.
- Characterization included particle size, surface charge (ζ-potential), and adsorption/desorption behavior with anionic dyes.
Main Results:
- ChNF coating was successfully applied to CA microparticles (approx. 6 μm) with minimal impact on size and shape.
- The ChNF layer (0.2-0.4 wt%) resulted in a positive ζ-potential (+27.4 mV) due to cationic ChNFs.
- Efficient and repeatable adsorption/desorption of anionic dyes was demonstrated, highlighting coating stability.
Conclusions:
- A facile, aqueous ChNF coating process was established for biodegradable CA microparticles.
- The resulting ChNF-coated microparticles exhibit enhanced adsorption capabilities and tunable surface properties.
- This versatile coating technique holds potential for developing advanced biodegradable materials for sustainable development.
