Anticorrosives, encapsulates, catalytic supports and other novel nanostructured materials

Bulletin of Materials Science

关键词: Sol–gel process;    modified Novolac resin;    stearic acid;    abietic acid;    corrosion;    clear/translucent hybrid materials.;   

学科分类：材料工程

来源: Indian Academy of Sciences

【 摘 要 】

A phenolic-formaldehydic resin (PFR) of the Novolac-type and modified through the attachment of carboxylic end groups (MPR), is used to tailor the morphological and optical properties of sol–gel synthesized silica materials. Silica microparticles are produced from alkoxide precursors in the presence of PFR or MPR resins, leading to a final material consisting of SiO2 globules entangled inside a polymerized resin matrix. Under appropriate experimental conditions, chemical bonds can be established between the SiO2 silanol surface groups and the MPR carboxylic chains, to render SiO2/MPR core-shell-type compounds. The presence of PFR or MPR resins during the sol–gel production of silica microspheres allows to control:

【 授权许可】

CC BY