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Preparation of pH Sensitive MMT/PEGMEA Nanocomposite Micropatterns by Rapid and Simple UV Curing Procedures

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Microfabricated montmorillonite (MMT) reinforced poly(ethylene glycol) methyl ether acrylate (PEGMEA) nanocomposites containing pH indicating chemicals have been prepared for microchip based pH sensor applications. Microfabricated pH sensors are useful for various miniaturized devices such as lab-on-a-chips, diagnostic strips, biosensors, microfluidic chips, microarray chips that have gained high interest on environmental and medical applications. The micropatterning of MMT/PEGMEA with 0.5 to 2.0 wt.% MMTs was achieved by a rapid and simple UV curing process using micropatterned photomasks. Microstructures of 1.0 wt.% MMT/PEGMEA, with 600–1500 m arrays and methyl orange (MO) or phenolphthalein (PP) as a pH indicator, were then prepared using this UV curing process. The prepared pH-sensitive MMT/PEGMEA micropatterns were characterized by microstructure morphology and by their evident color-changing properties with acidic or basic solutions. These MMT/PEGMEA microstructures with MO or PP could be applicable to miniaturized sensor devices.
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Keywords: HYDROGEL; NANOCOMPOSITE; PEG MICROSTRUCTURE; PH SENSOR; UV CURING

Document Type: Research Article

Publication date: 01 June 2017

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  • Journal of Nanoelectronics and Optoelectronics (JNO) is an international and cross-disciplinary peer reviewed journal to consolidate emerging experimental and theoretical research activities in the areas of nanoscale electronic and optoelectronic materials and devices into a single and unique reference source. JNO aims to facilitate the dissemination of interdisciplinary research results in the inter-related and converging fields of nanoelectronics and optoelectronics.
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