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Home  >  Journal list  >  Polymer Journal  >  Vol.42  No.4 (2010)  >  pp.298-303

Polymer Journal
<<Previous article Vol.42  No.4 (2010)   pp.298 - 303 Next article>>

A carbon network backbone polymer functionalized with polymer brushes

Jeffrey F Greco1 and Patricia A Bianconi1
1Department of Chemistry, University of Massachusetts Amherst, Amherst, MA, USA

The surface-initiated graft polymerization of polymer brushes attached to an sp3 random carbon network backbone structure is demonstrated. Poly(ethyl acrylate) (PEA), poly(4-fluorostyrene) (PFS) and poly(acrylonitrile) (PAN) brushes were grafted from the network backbone polymer poly(hydridocarbyne), 1, illustrating the breadth of reactivity of the network backbone. Attachment of polymeric/oligomeric chains to the network backbone was observed through two different methods with different polymer systems. First, selective solvent extraction separated a homogeneous mixture of PEA and 1, dissolving PEA in diethyl ether, but leaving 1 behind as a brown precipitate. In contrast, 1 functionalized with PEA brushes completely dissolved, showing that it was not a homogenous mixture of the substrate and free polymeric chains, but a system of covalently bound polymer chains originating from 1. Formation of short chains of PFS at the surface of 1 allowed the use of 19F nuclear magnetic resonance to observe the change in resonance shift and shape for the polymer side chains. Solvent extraction was used to demonstrate that tetrahydrofuran (THF) was able to separate a homogeneous mixture of PAN and 1, dissolving 1 in THF, but leaving PAN behind as a white precipitate.


Keyword:
functionalization of polymers; graft copolymers; networks; radical polymerization

Received: October 24, 2009 , Revised: December 19, 2009
Accepted: December 21, 2009 , Published online: February 17, 2010
© 2010 The Society of Polymer Science, Japan

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