New glucosamine Schiff base grafted poly(acrylic acid) as efficient Cu2+ ions adsorbent and antimicrobial agent

Add time:08/10/2019    Source:sciencedirect.com

Developing multifunctional materials to deal with the complex problem of water pollution has drawn significant concerns in recent time. In this study we report the synthesis of a new bi-functional polymer derived from N,N-dimethylaminobenzaldehyde and glucosamine-based Schiff base grafted poly(acrylic acid). The polymer besides affecting active adsorption of Cu2+ ions in the aqueous solution was also found to possess antibacterial properties. A high qm value of 208.33 mg g−1 for Cu2+ ions adsorption by the polymer was observed under the optimal conditions of contact time, temperature, pH of the medium and initial Cu2+ ions concentration. Presence of competing Mg2+ and Ca2+ ions was not found to have any appreciable effect on the adsorption capacity of the polymer towards Cu2+ ions which shows that the polymer is selective Cu2+ ions adsorbent under hard water conditions. The polymer also exhibited antibacterial activity against Gram (+), S. aureus and Gram (‒) P. vulgaris. The key findings reported in the present work reveal the bi-functional attributes of polymer and emphasize the role of Schiff base functionality in designing such materials.

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