Synthesis and application of photoreactive polyvinyl acetate and polyvinyl alcohol copolymers

Autor:
Graf, Jochen Michael
ISBN
978-3-86359-420-6
49,00 €
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Quick Overview

This thesis presents the synthesis of novel photoreactive polyvinyl acetate (PVAc)
and polyvinyl alcohol (PVA) copolymers and demonstrates potential applications of
such copolymers as functional coatings or carrier systems for ‘load and controlled
release’ experiments.

This thesis presents the synthesis and potential applications for novel photoreactive
polyvinyl acetate (PVAc) and polyvinyl alcohol (PVA) copolymers as functional
coatings or polymer gels. The successful development of a novel benzophenonebased
UV-light sensitive comonomer (VEBP) featuring excellent copolymerization
capability and chemical stability towards strong alkaline saponification conditions,
allows the simple and efficient polymerization of PVAc-co-VEBP and PVA-co-VEBP
(after saponification) copolymers with defined incorporation rates of this photocross-
linker. This photoreactive VEBP moiety allows the unspecific generation of
cross-links or the surface-attachment of such polymers to a variety of aliphatic groupbearing
surfaces via irradiation with UV-light.
In addition, this work demonstrates potential applications of such copolymers as
carrier systems in ‘load and controlled release’ experiments, in which a model
substance confined in such cross-linked polymer particles, can be released in a
controlled manner into aqueous surrounding media upon a pH-stimulus.
Furthermore, PVAc-co-VEBP copolymers are used as functional, hydrophobic papercoatings,
which enable control over wetting or imbibition of water on coated
substrates by direct saponification of the fiber-immobilized copolymer coating, i.e. the
conversion of the hydrophobic (dewetting) PVAc-species into the hydrophilic
(wetting) PVA-species.

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Autor Graf, Jochen Michael
Lieferzeit 3-4 Tage
Erscheinungsdatum 20.04.2016
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Sie bewerten:Synthesis and application of photoreactive polyvinyl acetate and polyvinyl alcohol copolymers

This thesis presents the synthesis and potential applications for novel photoreactive
polyvinyl acetate (PVAc) and polyvinyl alcohol (PVA) copolymers as functional
coatings or polymer gels. The successful development of a novel benzophenonebased
UV-light sensitive comonomer (VEBP) featuring excellent copolymerization
capability and chemical stability towards strong alkaline saponification conditions,
allows the simple and efficient polymerization of PVAc-co-VEBP and PVA-co-VEBP
(after saponification) copolymers with defined incorporation rates of this photocross-
linker. This photoreactive VEBP moiety allows the unspecific generation of
cross-links or the surface-attachment of such polymers to a variety of aliphatic groupbearing
surfaces via irradiation with UV-light.
In addition, this work demonstrates potential applications of such copolymers as
carrier systems in ‘load and controlled release’ experiments, in which a model
substance confined in such cross-linked polymer particles, can be released in a
controlled manner into aqueous surrounding media upon a pH-stimulus.
Furthermore, PVAc-co-VEBP copolymers are used as functional, hydrophobic papercoatings,
which enable control over wetting or imbibition of water on coated
substrates by direct saponification of the fiber-immobilized copolymer coating, i.e. the
conversion of the hydrophobic (dewetting) PVAc-species into the hydrophilic
(wetting) PVA-species.

Mehr Informationen
Autor Graf, Jochen Michael
Lieferzeit 3-4 Tage
Erscheinungsdatum 20.04.2016
Eigene Bewertung schreiben
Sie bewerten:Synthesis and application of photoreactive polyvinyl acetate and polyvinyl alcohol copolymers
Adresse

Institut für Industriekommunikation und Fachmedien (IIF) GmbH an der RWTH Aachen

Steinbachstr. 25
52074 Aachen
Deutschland