| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5211312 | Reactive and Functional Polymers | 2006 | 13 Pages |
Abstract
Cross-linked copolymers based on poly(acrylic acid) and functionalised with crown-ethers have been designed and synthesised. The materials selectively absorb K+ over other Group I ions such as Li+ and Na+. The copolymers have been used as the basis of a quartz crystal microbalance, QCM, to form a sensor for use in aqueous solutions. Acrylic acid polymers cross-linked with ethylene glycol dimethacrylate, (EGDMA) and substituted with 18-crown-6 rings were coated onto the crystal and the sensing of K(aq)+ investigated. The detection limit of the developed sensor is <1Â ppm for K(aq)+ with a linear range extending to over 1000Â ppm although further optimisation should significantly improve this performance.
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Authors
Gareth J. Price, Philip L. Drake,