Polyethyleneimine coating renders polycarbonate resistant to organic solvents

We propose a method for the modification of surfaces of microchannels in chips fabricated in polycarbonate (PC) that makes the devices resistant to a range of organic solvents. Coating of PC with branched polyethyleneimine (BPEI) with the use of trimethylpropane triglycidyl ether (TTE) as a linker r...

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Bibliographic Details
Published inLab on a chip Vol. 12; no. 14; pp. 2580 - 2584
Main Authors Jankowski, Paweł, Ogończyk, Dominika, Lisowski, Wojciech, Garstecki, Piotr
Format Journal Article
LanguageEnglish
Published England 21.07.2012
Subjects
Chips
Coating
Devices
Droplets
Materials handling
Polycarbonates
Polyethyleneimine
Solvents
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Summary:We propose a method for the modification of surfaces of microchannels in chips fabricated in polycarbonate (PC) that makes the devices resistant to a range of organic solvents. Coating of PC with branched polyethyleneimine (BPEI) with the use of trimethylpropane triglycidyl ether (TTE) as a linker renders the devices resistant to toluene, benzene, acetonitrile, tetrahydrofuran, dioxane and ethylene dichloride. The optimized procedure of modification allows for continuous operation of the chips for several hours without dissolution of PC. Additional modification with the use of Krytox® allows for the use of Fluorinert (FC-40) as the continuous phase and for generation and handling of droplets of organic solvents that are miscible with water.
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ISSN:1473-0197
1473-0189
DOI:10.1039/c2lc21297h