Related Experiment Video
Updated: Jun 28, 2026

Stabilizing Hepatocellular Phenotype Using Optimized Synthetic Surfaces
Published on: September 26, 2014
Extraction of aromatic acids and phenols by polyurethane foam
Abstract:
The extraction of several aromatic acids and phenols including salicylic acid, 8-hydroxyquinoline, 1-amino-2-naphthol-4-sulphonic acid and cinnamic acid in the presence of various protonated alkylamines, ammonia and alkali metal cations from aqueous solution by polyurethane foam has been investigated. These compounds are extracted only in the neutral form by a solvent extraction mechanism. The mechanism has been confirmed by the salting-out effect and pH studies. With the exception of 8-hydroxyquinoline, the compounds are more extractable by polyether foam than by polyester foam, suggesting that hydrogen bonding is stronger with the polyether foam.
Related Concept Videos
Aromatic Compounds: Overview
In 1825, Faraday isolated benzene...
Electrophilic Aromatic Substitution: Sulfonation of Benzene
Preparation of Carboxylic Acids: Overview
Hydrolysis of Chlorobenzene to Phenol: Dow Process
