Extraction of naphthalene by block copolymer surfactants immobilized in polymeric hydrogels

Journal Article · Thu Sep 01 00:00:00 EDT 1994 · AIChE Journal (American Institute of Chemical Engineers); (United States)

DOI:https://doi.org/10.1002/aic.690400904· OSTI ID:6954956

Calvert, T L; Phillips, R J; Dungan, S R ^[1]

---

1. Univ. of California, Davis, CA (United States)

Gel/micelle materials, comprising hydrogels containing block copolymer micelles, have the potential to be very useful in a variety of extraction and controlled release applications. It is demonstrated that block copolymer surfactants can be immobilized in calcium alginate gels and that the resulting composite material preferentially solubilizes the model hydrophobic solute naphthalene. Five different polyethylene oxide-polypropylene oxide-polyethylene oxide triblock copolymer surfactants are considered, and the qualitatively different properties exhibited are interpreted in light of the properties of these surfactants in solution. Alginate gel concentrations of 22.5 and 52.5 g/l and surfactant concentrations ranging from 20.4 to 136 g/l are considered. The data indicate that micelles can be permanently immobilized for purposes of extraction or controlled release and that the extent of solute uptake or release can be altered by varying gel and surfactant concentration and the type of surfactant employed.

• OSTI ID: 6954956
• Journal Information: AIChE Journal (American Institute of Chemical Engineers); (United States), Vol. 40:9; ISSN 0001-1541
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
NAPHTHALENE
EXTRACTION
SURFACTANTS
SORPTIVE PROPERTIES
CONCENTRATION RATIO
COPOLYMERS
MICELLAR SYSTEMS
PROCESS CONTROL
SEPARATION PROCESSES
AROMATICS
CONDENSED AROMATICS
CONTROL
HYDROCARBONS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
POLYMERS
SURFACE PROPERTIES
400105* - Separation Procedures