Resorcinol-formaldehyde based carbon nanospheres by electrospraying

One-Step Synthesis of Silica@Resorcinol-Formaldehyde Nanospheres and their Application for the Fabrication of Functional Polymer and Carbon Capsules

The synthesis of silica, carbon or polymer nanospheres and capsules has attracted widespread interest because of their potential applications in the fields of drug delivery, catalysis, photonic crystals, biodiagnostic or energy storage. Special attention has been paid to colloidal silica nanospheres of uniform size. These particles are commonly produced by the hydrolysis and condensation of sil...

Resorcinol-Formaldehyde (R-F) Resin

Resorcinol-Formaldehyde Reactions in Dilute Solution Observed by Carbon-13 NMR Spectroscopy

A recently discovered coupling agent, hydroxymethylated resorcinol (HMR), based on resorcinol-formaldehyde, can greatly enhance wood-to-epoxy resin bond durability in exterior applications. However, for HMR to be most effective, it needs to be prepared a few hours before it is applied to the wood surface. In this study, carbon-13 nuclear magnetic resonance (NMR) spectroscopy was used to monitor...

Resorcinol-formaldehyde resin "Russian Red" endodontic therapy.

Resorcinol-formaldehyde resin is a material used in endodontic therapy in many foreign countries. With immigration to the United States increasing, American dentists need to become familiar with resorcinol-formaldehyde therapy. It contains two potentially toxic components, formaldehyde (liquid) and resorcinol (powder). Zinc oxide or barium sulfate may be used for radiopacity. When 10% sodium hy...

The control of porosity at nano scale in resorcinol formaldehyde carbon aerogels

Organic aerogels were synthesized by sol–gel polymerization of resorcinol (R) with formaldehyde (F) catalyzed by sodium carbonate (C) followed by vacuum drying. The influence of the resorcinol/sodium carbonate ratio (R/C) on the porous structure of the resultant aerogels was investigated. The nitrogen adsorption–desorption measurements show that the aerogels possess a well developed porous stru...