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J Am Chem Soc. 2002 Aug 14;124(32):9394-5.

Combinatorial study of the mushroom-to-brush crossover in surface anchored polyacrylamide.

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1
Department of Chemical Engineering, North Carolina State University, Raleigh 27695-7905, USA.

Abstract

We present a method for fabricating anchored polymers with a gradual variation of grafting densities on solid substrates. The technique for generating such structures comprises (i) formation of a molecular gradient of polymerization initiator on the solid substrate and (ii) polymerization from the substrate-bound initiator centers ("grafting from"). We measure the mushroom-to-brush transition in grafted polyacrylamides and show that the mushroom and brush behavior can be described using existing scaling theories.

PMID:
12167033
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