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One-step synthesis of an antimicrobial framework based on covalently cross-linked chitosan/lignosulfonate (CS@LS) nanospheres

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Abstract

Herein, renewable and uniform nanospheres based on chitosan (CS) and lignosulfonate (LS): (CS@LS) were designed for the first time through a simple one-step covalent cross-linking protocol. Experimental and theoretical pieces of evidence have proven the self-assembled structure of the nanospheres as a binary network between CS and LS. The optimum composite structure was formed at CS@LS 1 : 1 ratio, with a characteristic domain size in the range of 150–200 nm. The amphiphilic nanospheres demonstrated high thermal, mechanical, and bactericidal properties. The CS@LS-1 : 1 nanosphere demonstrated high growth inhibition towards aerobic Gram (−) E. coli and Gram (+) B. subtilis and anaerobic sulfate-reducing bacteria (SRB) making them ideal biocides for water disinfection. This work provides an important synthesis guideline for the development of green biomimetic nanomaterials for a plethora of applications, where a uniform size and shape are crucial success criteria.

Graphical abstract: One-step synthesis of an antimicrobial framework based on covalently cross-linked chitosan/lignosulfonate (CS@LS) nanospheres

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Article information


Submitted
06 Oct 2019
Accepted
11 Nov 2019
First published
12 Nov 2019

Green Chem., 2020, Advance Article
Article type
Paper

One-step synthesis of an antimicrobial framework based on covalently cross-linked chitosan/lignosulfonate (CS@LS) nanospheres

R. P. Pandey, K. Rasool, P. A. Rasheed, T. Gomez, M. Pasha, S. A. Mansour, O. Lee and K. A. Mahmoud, Green Chem., 2020, Advance Article , DOI: 10.1039/C9GC03461G

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