Combinatorial Screening of Polymeric Sensing Materials Using RFID Sensors: Combined Effects of Plasticizers and Temperature
| Autor: | William G. Morris, Radislav A. Potyrailo, Cheryl Margaret Surman |
|---|---|
| Rok vydání: | 2009 |
| Předmět: |
chemistry.chemical_classification
Polymers Annealing (metallurgy) Phthalic Acids Temperature Plasticizer Phthalate Model system Nanotechnology General Chemistry Polymer Electrolyte Radio Frequency Identification Device chemistry.chemical_compound Fluorocarbon Polymers chemistry Plasticizers Nafion Organic chemistry Dimethyl phthalate |
| Zdroj: | Journal of Combinatorial Chemistry. 11:598-603 |
| ISSN: | 1520-4774 1520-4766 |
| Popis: | Recently, we have developed battery-free, passive RFID chemical and biological sensors that are attractive in diverse applications where sensor performance is needed at a low cost and when battery-free operation is critical. In this study, we apply this attractive low-cost sensing platform for the combinatorial screening of formulated sensing materials. As a model system, a 6 x 8 array of polymer-coated RFID sensors was constructed to study the combined effects of polymeric plasticizers and annealing temperature. A solid polymer electrolyte Nafion was formulated with five different phthalate plasticizers: dimethyl phthalate, butyl benzyl phthalate, di-(2-ethylhexyl) phthalate, dicapryl phthalate, and diisotridecyl phthalate. These sensing film formulations and control sensing films without a phthalate plasticizer were deposited onto 9-mm diameter RFID sensors, exposed to eight temperatures ranging from 40 to 140 degrees C using a gradient temperature heater, and evaluated for their response stability and gas-selectivity response patterns. This study demonstrated that our RFID-based sensing approach permits rapid cost-effective combinatorial screening of dielectric properties of sensing materials. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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