Polymer-based separations: Synthesis and application of polymers for ionic and molecular recognition. Annual performance report, August 1, 1993--July 31, 1994

Technical Report · Fri Apr 01 00:00:00 EST 1994

DOI:https://doi.org/10.2172/10173307· OSTI ID:10173307

Alexandratos, S D

During this period, focus was on design and synthesis of bifunctional polymers for complexing metal ions from aqueous solutions; this could provide a means for separating radioactive and toxic metal ions from contaminated waste water as well as valuable metals from dilute ore processing streams. The synthesis of bifunctional polymers required a new preparative technique; bifunctional interpenetrating polymer networks (IPN) was an important part of the studies. In the preparation, a pre-formed crosslinked polymer is contacted with a solution of monomers, and a second network was polymerized within the first. Imidazole ligands were used. A new resin, prepared with a macrocyclic sorbed within polystyrene beads modified with sulfonic acid ligands, extracted Cu(II) 10--100-fold. Maximum metal ion complexation rates depend on a balance between chemical interactions and physical parameters (matrix porosity, rigidity). A novel ion exchange resin (Diphonix{trademark}) has been produced which displays both ionic selectivity (diphosphonic acid ligands) and rapid complexation rates (sulfonic acid ligands).

• Research Organization: Tennessee Univ., Knoxville, TN (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: FG05-86ER13591
• OSTI ID: 10173307
• Report Number(s): DOE/ER/13591-8; ON: DE94016427; BR: KC0302020
• Resource Relation: Other Information: PBD: Apr 1994
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
ION EXCHANGE MATERIALS
PROGRESS REPORT
POLYMERS
CHELATING AGENTS
RESINS
SYNERGISM
LIGANDS
MATRIX MATERIALS
PHOSPHONIC ACIDS
SULFONIC ACIDS
400105
052001
SEPARATION PROCEDURES
WASTE PROCESSING