Potassium selective acrylic copolymers: Synthesis and application to chemical sensors

G J Price, P L Drake

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)
172 Downloads (Pure)

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 < 1 ppm for K-(aq)(+) with a linear range extending to over 1000 ppm although further optimisation should significantly improve this performance.
Original languageEnglish
Pages (from-to)109-121
Number of pages13
JournalReactive & Functional Polymers
Volume66
Issue number1
DOIs
Publication statusPublished - 2006

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