Interpenetrating polymer network ion exchange membranes and method for preparing the same

Patent · Tue Nov 07 04:00:00 EST 1989

OSTI ID:5542256

Alexandratos, S D; Danesi, P R; Horwitz, E P

This patent describes an ion exchange membrane for the extraction of ions from aqueous solutions and transport of the ions across the membrane. It comprises: a microporous polymeric support film interpenetrated by an ion exchange polymer to form an interpenetrating polymer being formed from a monomer selected from the class consisting of diundecenyl phosphate and allyl 2-ethylexyl phosphate and comonomers thereof. The polymer includes network, the ion exchange polymer including a main polymer backbone, ion exchange ligands for transporting the ion across the membrane, and ligand support groups branching laterally from the backbone at spaced apart locations along the backbone, the ion exchange ligands being supported on the support groups at positions laterally spaced from the backbone by a sufficient distance such that there is sufficient ligand mobility to provide for transport of the ions between adjacent ligands by flexure of the support groups relative to the backbone. The spacing between the ligand support groups along the main polymer backbone is selected to control the transport of water through the membrane.

• Assignee: Univ. of Tennessee Research Corp., Knoxville, TN (USA)
• Patent Number(s): A; US 4879316
• Application Number: PPN: US 7-019441A
• OSTI ID: 5542256
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360601* -- Other Materials-- Preparation & Manufacture
AQUEOUS SOLUTIONS
CHARGED PARTICLES
DESIGN
DISPERSIONS
EXTRACTION
FABRICATION
ION EXCHANGE MATERIALS
IONS
LIGANDS
MATERIALS
MIXTURES
POLYMERS
SEPARATION PROCESSES
SOLUTIONS