Hydrophilic polycarbonate for generation of oil in water emulsions in microfluidic devices.
basic_science · Level V
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- Record sourced from PubMed, PMID 21267479.
- Also identified by DOI 10.1039/c0lc00438c.
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Abstract
This report details the method for rendering hydrophilic surfaces of microchannels fabricated in polycarbonate (PC). We characterize the wetting properties and stability of the hydrophilic character of two coatings--one formed by a layer of poly(allylamine) (PAH*) and the second including an additional layer of poly(styrene-sulfonate) (PSS). This second (PC-PAH/PSS) coating yields highly hydrophilic surface that is stable against weeks of exposure to various fluids including organic oils. This coating allows for stable generation of oil-in-water emulsions of hydrocarbon, silicone and fluorinated oils without the use of surfactants and over days of continuous use.