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Updated: Jul 1, 2025
Preparation and Characterization of SDF-1α-Chitosan-Dextran Sulfate Nanoparticles
Published on: January 22, 2015
Chitosan particles embedded bacterial nanocellulose flat membrane for hemodialysis
Lulu Lin1, Lin Chen2, Changrui Lu3
1State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Donghua University, Shanghai 201620, China; College of Biological Science and Medical Engineering, Donghua University, No. 2999 North Ren Min Road, Shanghai 201620, China.
New chitosan particle/bacterial nanocellulose membranes efficiently remove uremic toxins and retain beneficial proteins. This bio-based hemodialysis membrane offers enhanced mechanical properties and improved pore regulation for dialysis applications.
Area of Science:
- Biomaterials Science
- Membrane Technology
- Renal Replacement Therapy
Background:
- Developing effective bio-based hemodialysis membranes remains a significant challenge.
- Existing bacterial nanocellulose (BNC) membranes struggle to retain beneficial proteins during dialysis.
- There is a need for membranes that can efficiently remove uremic toxins while preserving essential proteins.
Purpose of the Study:
- To design and fabricate chitosan particle/bacterial nanocellulose (CSP/BNC) composite membranes.
- To enhance the performance of BNC membranes for hemodialysis applications.
- To achieve efficient removal of uremic toxins and retention of beneficial proteins.
Main Methods:
- In situ synthesis of chitosan particles (CSPs) within a BNC membrane via ionic gelation and negative pressure impregnation.
- Characterization of membrane pore size, pore volume, and mechanical properties (Young's modulus, tensile strength).
- Evaluation of membrane performance using sieving coefficients, hemocompatibility, cytocompatibility, and simulated dialysis.
Main Results:
- The 3% CSP/BNC membrane showed reduced pore volume (42.2%) and pore size (32.1%) compared to BNC.
- Mechanical properties were significantly enhanced, with a 22.2-fold increase in Young's modulus and 88.9% increase in tensile strength.
- High clearance for urea (16.37%/cm²) and lysozyme (3.54%/cm²) was observed, alongside efficient retention of bovine serum albumin (98.04%/cm²).
Conclusions:
- The in situ formation of CSPs effectively regulates the pore properties of BNC membranes.
- CSP/BNC membranes demonstrate superior mechanical properties and hemocompatibility.
- These novel membranes represent a promising advancement for hemodialysis applications.
