Accession Number : ADA310584

Title :   Functionalized Porous Polymer Sheets as Models of Thermoresponsive Membranes for Water Treatment.

Descriptive Note : Final rept.,

Corporate Author : CORNELL UNIV ITHACA NY DEPT OF CHEMISTRY

Personal Author(s) : Frechet, Jean M. ; Peters, Eric C. ; Svec, Frantisek

PDF Url : ADA310584

Report Date : 30 JUN 1996

Pagination or Media Count : 24

Abstract : A novel approach to thermoresponsive polymeric membranes based on molded monolithic sheets of macroporous polymers has been demonstrated. The macroporous sheet prepared from glycidyl methacrylate ethylene dimethacrylate is functionalized either by free-radical grafting of N-isopropylacrylamide, or, better, by copolymerization of N-isopropylacrylamide onto the vinylated surface of the pores of the polymer sheet. The macroporous polymers modified with poly(N-isopropylacrylamide) were shown to be thermoresponsive. Changes in the temperature of a flow system incorporating the modified macroporous material were accompanied by significant changes in the backpressure required to effect flow. This study confirms the feasibility of thermoresponsive membranes for water purification.

Descriptors :   *SOLUTIONS(MIXTURES), *POLYMERS, *WATER TREATMENT, *MEMBRANES, GRAFT POLYMERIZATION, PURIFICATION, SHEETS, METHACRYLATES, FLOW, FREE RADICALS, MONOLITHIC STRUCTURES(ELECTRONICS), POROUS MATERIALS, MOLDING MATERIALS.

Subject Categories : Polymer Chemistry
      Water Pollution and Control

Distribution Statement : APPROVED FOR PUBLIC RELEASE