Polyelectrolyte complexes
Polyelectrolyte complexes formed from combined water soluble and negatively charged polyelectrolytes
Rembaum, A.↗
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Novel polyelectrolytes
Cationic polyelectrolytes are formed by the polymerization in absence of oxygen of a monomer of the general formula: ##STR1## where x is 3 or more than 6 and Z is I, Br or Cl to form high charge density linear polymers. Segments of the linear polymer may be attached to or formed in the presence of polyfunctional reactive tertiary amines or halogen polymeric substrates or polyfunctional lower molecular reactive polyfunctional substrates to form branched or star polyelectrolytes by a quaternization polymerization reaction.
Rembaum, Alan↗
The rheology of polyelectrolytes. IV - The dependence of turbulence on polymer concentration
Transition from laminar to turbulent flow as function of concentration for aqueous solutions of polyacrylic acid
ACRYLIC ACID↗
Polyelectrolytes with high charge density
Polymers can be used as flocculants to clarify residential and industrial water supplies and as bactericidal and fungicidal agents. They can be used in preparation of electroconductive photocopy papers, to improve living cell adhesion to glass or plastic, and as anticancer agents.
Rembaum, A.↗
Improved polyelectrolyte for ion exchange fibers
Technique increases ion exchange capacity of hollow-fiber-substrate ion exchange resins. Procedure increases number of quaternary sites on polyquaternary copolymer by 15 to 35 percent.
Rembaum, A.↗
Insoluble polyelectrolyte and ion-exchange hollow fiber impregnated therewith
The number of quaternary sites and ion exchange capacity of a polyquaternary, cross linked, insoluble copolymer of a vinyl pyridine and a dihalo organic compound is increased by about 15-35% by reaction of the polymer with an amine followed by quaternization, if required. The polymer forms spontaneously in the presence of a substrate such as within the pores of a hollow fiber. The improved resin impregnated fiber may be utilized to remove ions from waste or process steams.
Rembaum, A.↗
Low-resistivity homogeneous elastomers
Mixture of polyurethane polyelectrolyte and soluble, conducting organic compound produces homogeneous elastomer which has resistivity several orders of magnitude less than polyelectrolyte alone. Elastomeric material has novel resistivity dependence on temperature, that is, resistivity changes dramatically over narrow temperature range in vicinity of glass transition temperature.
Somoano, R. B.↗
Ionene membrane battery separator
Ionic transport characteristics of ionenes, insoluble membranes from soluble polyelectrolyte compositions, are studied for possible application in a battery separator. Effectiveness of the thin film of separator membrane essentially determines battery lifetime.
Moacanin, J.↗
Fog dispersal technology.
The state-of-the-art in fog dispersal technology is briefly discussed. Fog is categorized as supercooled fog, occurring in air temperatures below freezing, and warm fog, occurring at above-freezing temperatures. Operational techniques are available to disperse supercooled fog in the airport area. It is much more difficult to cope with warm fog. Various known concepts to disperse warm fog are evaluated as to their operational merits. The most effective concept for immediate use involves heating the air to cause fog evaporation. Use of helicopter downwash has some application, possibly complementing the promising concept of seeding with sized hygroscopic particles. These latter two concepts appear to have future application, pending further research. The concept using polyelectrolytes is of uncertain value, lacking both a scientific explanation and a substantive evaluation of reported operational successes.
Mcgowan, W. A.↗
Ionene treatment of surfaces stimulates cell growth
Number of cells adhering to walls of container can be increased by chemically pretreating walls. Polyelectrolyte, ionene, gives more effective pretreatment than any currently used chemicals.
Rembaum, A.↗
Conductive hydrogel containing 3-ionene
Cationic polyelectrolytes formed by the polymerization in absence of oxygen of a monomer of the general formula: dispersed ##STR1## where x is 3 or more than 6 and Z is I, Br or Cl to form high charge density linear polymers are dispered in a water-soluble polymer such as polyvinyl alcohol to form a conductive hydrogel.
Rembaum, Alan↗