Condensation of α,ω-siloxane diols with aminoalkyl- (alkoxy)silanes

Kinetics of condensation of individual siloxane diols HO[(CH SiO] Si(CH OH (x=3,5,6 and 9) with aminoalkyl-alkoxysilanes (RO) SiR’(CH NHR’’ (R = CH , CH CH ; R’ = CH , OR; R’’ = H, (CH NH ) is described. The second order rate constants point to the significant effect of the siloxane diols chain leng...

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Bibliographic Details
Published in:e-Polymers 2013-12, Vol.13 (1), p.249-260
Main Authors: Lubkowska, Magdalena, Stanczyk, Wlodzimierz A., Rozga-Wijas, Krystyna
Format: Article
Language:English
Subjects:
Alkoxysilanes
Condensation
Constants
Diols
Homology
Kinetics
Oligomers
Rate constants
Reaction kinetics
Silicon substrates
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Summary:Kinetics of condensation of individual siloxane diols HO[(CH SiO] Si(CH OH (x=3,5,6 and 9) with aminoalkyl-alkoxysilanes (RO) SiR’(CH NHR’’ (R = CH , CH CH ; R’ = CH , OR; R’’ = H, (CH NH ) is described. The second order rate constants point to the significant effect of the siloxane diols chain length on reactivity, which increases for higher homologues (almost an order) of magnitude on coming from x=3 to x=9. The role of substituents at silicon atom is discussed. Three novel functional siloxane oligomers (substrates) are described and characterized.
ISSN:2197-4586
1618-7229
DOI:10.1515/epoly-2013-0123