Dissolution Control of Mg by Cellulose Acetate–Polyelectrolyte Membranes

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.

Functional nanomaterials through esterification of cellulose: a review of chemistry and application

“…These cellulose acetate-based nanocomposites can be used as active packaging material due to their good antimicrobial activity as well as non-toxicity. Yliniemi et al (2014) reported composite membranes by means of spincoating technique containing cellulose acetate and poly(N,N-dimethylaminoethyl methacrylate) (PDMAEMA) for dissolution control of magnesium, which is critical for using magnesium as temporal medical implants. The dissolution control is achieved by the limited ion and H 2 flow through the membranes, and the permeability of the membrane can be adjusted by altering the cellulose acetate/PDMAEMA ratio (Fig.…”

Tackling Mg alloy corrosion by natural polymer coatings—A review

“…Cellulose is another polysaccharide being intensively considered for biomedical applications . It can be found as a structural component of plants, being the most abundant natural polymer . This polymer shows good processibility and is nonimmunogenic .…”

“…22 It can be found as a structural component of plants, being the most abundant natural polymer. 48 This polymer shows good processibility and is nonimmunogenic. 20 Cellulose has only recently started to be considered as protective coating for Mg. For example Yliniemi et al 48 spin coated a magnesium substrate with a cellulose-acetate-based membrane.…”

Time-Dependent Behavior of Cation Transport through Cellulose Acetate-Cationic Polyelectrolyte Membranes

“…Partitioning of the solute between the solution and the membrane depends on properties, like their hydrophobicity, as well as the concentration (or pressure) of the solute. Transport through such membranes can also be enhanced by the carrier-facilitated mechanism 9 that commonly occurs in biological membranes where specific proteins can act as carriers.Recently, we introduced a new membrane material made from a blend of cellulose acetate (CA) and poly(N,N-dimethylaminoethyl methacrylate) (PDMAEMA) 10,11 and this membrane proved to be * Electrochemical Society Member. z E-mail: kirsi.yliniemi@aalto.fi particularly practical for the dissolution control of magnesium.…”

“…Recently, we introduced a new membrane material made from a blend of cellulose acetate (CA) and poly(N,N-dimethylaminoethyl methacrylate) (PDMAEMA) 10,11 and this membrane proved to be * Electrochemical Society Member. z E-mail: kirsi.yliniemi@aalto.fi particularly practical for the dissolution control of magnesium.…”