Solution and Surface Composition Gradients via Microfluidic Confinement: Fabrication of a Statistical-Copolymer-Brush Composition Gradient

A stable solution composition gradient is generated inside a microchannel by varying the relative flow rates of two solutions that differ in composition. This solution gradient is used to synthesize a surface‐grafted statistical‐copolymer‐brush composition gradient via surface‐initiated atom transfe...

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Published in:Advanced materials (Weinheim) 2006-06, Vol.18 (11), p.1427-1430
Main Authors: Xu, C., Barnes, S. E., Wu, T., Fischer, D. A., DeLongchamp, D. M., Batteas, J. D., Beers, K. L.
Format: Article
Language:English
Subjects:
Composition gradient
Composition gradient, surface
Copolymers
Copolymers, statistical
Microfluidic systems
Polymer brushes
statistical
surface
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creator Xu, C.
Barnes, S. E.
Wu, T.
Fischer, D. A.
DeLongchamp, D. M.
Batteas, J. D.
Beers, K. L.
description A stable solution composition gradient is generated inside a microchannel by varying the relative flow rates of two solutions that differ in composition. This solution gradient is used to synthesize a surface‐grafted statistical‐copolymer‐brush composition gradient via surface‐initiated atom transfer radical polymerization (ATRP; see schematic). Near‐edge absorption fine structure spectroscopy confirms the continuous transition of surface composition from one end of the substrate to the other.
doi_str_mv 10.1002/adma.200502341
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subjects Composition gradient
Composition gradient, surface
Copolymers
Copolymers, statistical
Microfluidic systems
Polymer brushes
statistical
surface
title Solution and Surface Composition Gradients via Microfluidic Confinement: Fabrication of a Statistical-Copolymer-Brush Composition Gradient
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