Preparation and characterization of SiO₂‐functionalized phenolic resin hybrid materials

Abstract

Abstract The preparation and characterization of a hybrid material produced by the combination of a modified aldehydic–phenolic resin (MPR) of the Novolac‐type with an inorganic oxide is described. Silica sols were embedded within a phenolic resin matrix of a modified Novolac‐type. Functionalization of the resin with the introduction of carboxylic groups in the course of the reaction is key to rendering a strong chemical union between the silanol groups of the SiO 2 substrate and the COOH groups attached to the MPR resin, producing a core (SiO 2 )‐shell (MPR) structure. The hybrid samples were characterized by spectroscopic techniques (FT‐IR and FT‐Raman), XRD, TEM, and SEM. © 2002 Wiley Periodicals, Inc. Adv Polym Techn 21: 116–124, 2002; Published online in Wiley Interscience (www.interscience.wiley.com). DOI 10.1002/adv.10015