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Ion-Exchange Materials Based on Polycaproamide

“…This can be achieved by modifying available polymers, e.g., polycaproamide (PCA), with new functional groups [3,4]. Fibrous polymeric sorbents and also the variously shaped items manufactured from them (threads, woven or non-woven cloth) are recommended for extracting rare-earth metals from industrial wastewaters owing to their highly developed surface and better kinetics than granular ion exchangers [5].The effect of the graft-polymerization kinetics of PCA with a phosphorus-boron-containing methacrylate (PMB) on the phosphorus (P) content in the grafted copolymer and the static exchange capacity (SEC) was studied in order to develop an effective method for preparing ion-exchange material. The principal factors of graft polymerization of PCA with PMB in the presence of the redox system (RS) Cu 2+ -H 2 O 2 are considered to be the PMB concentration and the polymerization temperature and time.…”

“…This can be achieved by modifying available polymers, e.g., polycaproamide (PCA), with new functional groups [3,4]. Fibrous polymeric sorbents and also the variously shaped items manufactured from them (threads, woven or non-woven cloth) are recommended for extracting rare-earth metals from industrial wastewaters owing to their highly developed surface and better kinetics than granular ion exchangers [5].…”

Sorption Properties of Materials Based on Graft Polycaproamide Copolymers

“…Their exchange capacity is sufficiently high for practical applications and does not decrease in repeated cycles of regeneration with acids and bases. One of advantages of fibrous materials is the possibility of preparing from them articles of any shape: threads, porous plates, woven and nonwoven fabrics, which is especially valuable when the traditional process implementation is unacceptable [3].Modified polycaproamide fibers with P3OH groups based on graft copolymers of polycaproamide and poly(glycidyl methacrylate) (PGMA) [4] were prepared by phosphorylation of grafted chains with 1-hydroxyethylidenediphosphonic acid (HEDP) [5]. As shown in [6], modification of glycidyl methacrylate (GMA) copolymers at the epoxy group with the aim to prepare a phosphorus-containing sorbent is a promising procedure.…”

“…Modified polycaproamide fibers with P3OH groups based on graft copolymers of polycaproamide and poly(glycidyl methacrylate) (PGMA) [4] were prepared by phosphorylation of grafted chains with 1-hydroxyethylidenediphosphonic acid (HEDP) [5]. As shown in [6], modification of glycidyl methacrylate (GMA) copolymers at the epoxy group with the aim to prepare a phosphorus-containing sorbent is a promising procedure.…”