Influence of Monomer Connectivity, Network Flexibility, and Hydrophobicity on the Hydrothermal Stability of Organosilicas.

ABSTRACT: It is generally assumed that the hydrothermal stability of organically modified silica networks is promoted by high monomer connectivity, network flexibility, and the presence of hydrophobic groups in the network. In this study a range of organosilica compositions is synthesized to explore the extent to which these factors play a role in the hydrothermal dissolution of these materials. Compositions were synthesized from hexafunctional organically bridged silsesquioxanes (OR₁)₃Si-R-Si(OR₁)₃ (R = -CH₂-, -C₂H₄-, -C₆H₁₂-, -C₈H₁₆-, -p-C₆H₄-; R₁ = -CH₃, -C₂H₅), tetrafunctional (OEt)₂Si(CH₃)

SUBMITTER: Dral AP 

PROVIDER: S-EPMC5465508 | biostudies-literature | 2017 Jun

REPOSITORIES: biostudies-literature