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Planar Molecular and Macromolecular Gradients: Preparation and Properties

Published online by Cambridge University Press:  15 March 2011

J. Genzer ,
T. Wu  and
K. Efimenko
J. Genzer
Affiliation:
Department of Chemical Engineering, North Carolina State University, Raleigh, NC 27695-7905
T. Wu
Affiliation:
Department of Chemical Engineering, North Carolina State University, Raleigh, NC 27695-7905
K. Efimenko
Affiliation:
Department of Chemical Engineering, North Carolina State University, Raleigh, NC 27695-7905
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Abstract

We present a method for fabricating polymer brushes with a gradual variation of grafting density on solid substrates. The technique for generating such structures consists of: i) deposition of a molecular gradient of polymerization initiator on the solid substrate, and ii) polymerization from the substrate bound initiator centers (“grafting from”). In this publication we describe the preparation of gradient polymer brushes of poly(acryl amide) on silica-covered substrates. We show that the polymer density within the gradient polymer brush can be varied by controlling the polymerization time.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 705: Symposium Y – Nanopatterning–From Ultralarge-Scale Integration to Biotechnology , 2001 , Y8.8
Copyright
Copyright © Materials Research Society 2002

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