Bifunctional Fiber

Key words Ion exchange fiber, bifunctional fiber, sulfonic acid groups, phosphonic acid groups. 

Since the batchwise study clarified that the bifunctional fiber FPS-c adsorb Pb(II) more rapidly than monofunctional fiber FP-c, of interest is the... 

As conclusion, bifunctional fibers having both phosphonic acid and sulfonic acid groups exhibit the characteristic metal ion selectivity and high breakthrough capacities in addition to the extremely fast adsorption rates. Studies on behavior of FPS-f in adsorption of other heavy metals like Fe(III) are now in progress. The bifunctional fiber developed in this work is attractive to application to the protection of the environment because of its extremely rapid adsorption rates and characteristic metal ion selectivity. 

BIFUNCTIONAL CATION EXCHANGE FIBERS HAVING PHOSPHONIC AND SULFONIC ACID GROUPS... 

Abstract Bifunctional cation exchange fibers were derived from polyethylene coated... 

As long as tn processes of this type only bifunctional monomers are used, the resulting macromolecules are linear and, as a consequence, are of the soluble and fusible type. They can be used as fiber formers, rubbers or thermoplastic resins. If. however, some of the monomers are Ui- or tetra-inethylolnrea, the reaction leads to three-dimensional polymeric networks which are hard and bntde thermosetting resins, such as Bakelite or Glyptal. ... 

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