Issue 14, 2012
From the journal:

Lab on a Chip

Polyethyleneimine coating renders polycarbonate resistant to organic solvents†

Paweł Jankowski,a   Dominika Ogończyk,a   Wojciech Lisowskia  and  Piotr Garstecki*a  

* Corresponding authors

a Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
E-mail: garst@ichf.edu.pl

Abstract

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.

Graphical abstract: Polyethyleneimine coating renders polycarbonate resistant to organic solvents

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Article information

DOI
https://doi.org/10.1039/C2LC21297H
Article type
Paper
Submitted
27 Dec 2011
Accepted
03 Apr 2012
First published
04 Apr 2012

Lab Chip, 2012,12, 2580-2584

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Polyethyleneimine coating renders polycarbonate resistant to organic solvents

P. Jankowski, D. Ogończyk, W. Lisowski and P. Garstecki, Lab Chip, 2012, 12, 2580 DOI: 10.1039/C2LC21297H

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