Reaction of poly(vinyl butyral) with tetraethyl orthosilicate: grafting of siloxane chains and new composites

New graft copolymers with side polysiloxane chains were synthesized by sol–gel reaction of acid‐catalyzed hydrolysis of tetraethyl orthosilicate in the presence of poly(vinyl butyral). The grafting is realized by exchange reaction of the alkoxyl moieties in siloxane and acetal groups. When the react...

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Bibliographic Details
Published in:Polymer international 2004-06, Vol.53 (6), p.772-776
Main Authors: Annenkov, Vadim V, Danilovtseva, Elena N, Filina, Elena A, Mikhaleva, Albina I, Skotheim, Terie A, Trofimov, Boris A
Format: Article
Language:English
Subjects:
acidic hydrolysis
graft copolymers
nanocomposites
poly(vinyl butyral)
sol-gel
supramolecular structures
tetraethyl orthosilicate
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Summary:New graft copolymers with side polysiloxane chains were synthesized by sol–gel reaction of acid‐catalyzed hydrolysis of tetraethyl orthosilicate in the presence of poly(vinyl butyral). The grafting is realized by exchange reaction of the alkoxyl moieties in siloxane and acetal groups. When the reaction is carried out in non‐hydroxylic solvent (1,1‐dimethoxyethane) inter‐etherification with participation of the residual hydroxyl groups of poly(vinyl butyral) is also important. The copolymers obtained contain free silanol groups which are active in complexing with polymeric bases by hydrogen bonds, with formation of new composites. Copyright © 2004 Society of Chemical Industry
ISSN:0959-8103
1097-0126
DOI:10.1002/pi.1448