Poly (Amidehydrazide) Hydrogel Particles for Removal of Cu²⁺ and Cd²⁺ Ions from Water.

ABSTRACT: Poly(amidoamine)s (PAMAM) are very effective in the removal of heavy metal ions from water due to their abundant amine and amide functional groups, which have a high binding ability to heavy metal ions. We synthesized a new class of hyperbranched poly(amidehydrazide) (PAMH) hydrogel particles from dihydrazides and N,N'-methylenebisacrylamide (MBA) monomer by using the A2 + B4 polycondensation reaction in an inverse suspension polymerization process. In Cd²⁺ and Cu²⁺ ion sorption tests, the synthesized dihydrazide-based PAMH hydrogel particles exhibited sorption capacities of 85 mg/g for copper and 47 mg/g for cadmium. Interestingly, the PAMH showed only a 10% decrease in sorption ability in an acidic condition (pH = 4) compared to the diamine-based hyperbranched PAMAM

SUBMITTER: Choi H 

PROVIDER: S-EPMC8395747 | biostudies-literature | 2021 Aug

REPOSITORIES: biostudies-literature