Reactivity of vinyl ethers and vinyl ribosides in UV-initiated free radical copolymerization with acceptor monomers.
Biomacromolecules
; 11(9): 2415-21, 2010 Sep 13.
Article
em En
| MEDLINE
| ID: mdl-20666511
ABSTRACT
The reactivity of various vinyl ethers and vinyloxy derivatives of ribose in the presence of diethyl fumarate or diethyl maleate was investigated for evaluating the potential of donor-acceptor-type copolymerization applied to unsaturated monomers derived from renewable feedstock. The photochemically induced polymerization of model monomer blends in the bulk state was monitored by infrared spectroscopy. The method allowed us to examine the influence of monomer pair structure on the kinetic profiles. The simultaneous consumption of both monomers was observed, supporting an alternating copolymerization mechanism. A lower reactivity of the blends containing maleates compared with fumarates was confirmed. The obtained kinetic data revealed a general correlation between the initial polymerization rate and the Hansen parameter δ(H) associated with the H-bonding aptitude of the donor monomer.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Polímeros
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Cloreto de Polivinila
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Ribose
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Raios Ultravioleta
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Compostos de Vinila
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Radicais Livres
Idioma:
En
Ano de publicação:
2010
Tipo de documento:
Article