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US 2021/0262972 A1Published application
Magnesium ion selective pvc membranes
AssigneeRadiometer Medical ApS
InventorsLydia Dahl CLAUSEN, Thomas HANSEN
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Abstract
Ion selective membranes and the preparation thereof, such as magnesium ion selective membranes and the preparation thereof. In particular, the invention describes improved PVC polymer blends for use in ion selective membranes. The invention furthermore relates to electrodes and potentiometric sensors comprising such membranes and the use thereof for determining ion concentrations in samples.
Claims30
An ion-selective membrane comprising an ionophore and a polymer blend, wherein said polymer blend comprises:
- a. a first polymer which is carboxylated poly(vinyl chloride) or poly(vinyl chloride), wherein the molecular weight of said first polymer is from 100,000 to 500,000, and
- b. a second polymer, which is a co-polymer of vinyl chloride and at least one further monomer group having a hydrophilic group, wherein the molecular weight of said second polymer is below 100,000, and
- wherein, if said first polymer is carboxylated poly(vinyl chloride), said second polymer has more hydrophilic groups than said first polymer.
Dependencies are inferred from the claim text.