AI Article Synopsis
- Cellulose acetate (CA)-based membranes can regulate magnesium (Mg) dissolution by incorporating the polyelectrolyte poly(N,N-dimethylaminoethyl methacrylate) (PDMAEMA), adjusting permeability.
- The membranes, analyzed using FT-IR techniques, swell in water to manage ion and hydrogen gas flow.
- By modifying the CA:PDMAEMA ratio, it's possible to control the rate at which Mg dissolves, making it a promising option for temporary biomedical implants while minimizing side effects from corrosion products.
Article Abstract
Cellulose acetate (CA)-based membranes are used for Mg dissolution control: the permeability of the membrane is adjusted by additions of the polyelectrolyte, poly(N,N-dimethylaminoethyl methacrylate) (PDMAEMA). Spin-coated films were characterized with FT-IR, and once exposed to an aqueous solution the film distends and starts acting as a membrane which controls the flow of ions and H2 gas. Electrochemical measurements (linear sweep voltammograms, open-circuit potential, and polarization) show that by altering the CA:PDMAEMA ratio the dissolution rate of Mg can be controlled. Such a control over Mg dissolution is crucial if Mg is to be considered as a viable, temporary biomedical implant material. Furthermore, the accumulation of corrosion products between the membrane and the sample diminishes the undesirable effects of high local pH and H2 formation which takes place during the corrosion process.
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| http://dx.doi.org/10.1021/am5063597 | DOI Listing |
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