Impact of Cationic and Neutral Clay Minerals’ Incorporation in Chitosan and Chitosan/PVA Microsphere Properties DOI Creative Commons
Suelen Delfino Souza,

Hugo Fernando Meira dos Santos,

Larissa Fernandes Bonfim

et al.

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: March 28, 2025

This study investigates the synthesis of chitosan and chitosan/poly(vinyl alcohol) (PVA) microspheres incorporated with kaolinite synthetic saponite clays. The were prepared using a two-step process: (i) reticulation chitosan/PVA or to form clay-biopolymer matrix (ii) further produce double-layered microspheres. resulting materials characterized FTIR, XRD, thermal analysis SEM. Their properties evaluated for water uptake, cation exchange capacity, specific surface area, acid stability, methylene blue, Cr3+, Cr6+, Ni2+ adsorption. XRD confirmed successful polymer interaction both clay structures. Cationic favored dispersion, in more homogeneous Swelling tests revealed that chitosan-kaolinite exhibited 75% swelling, while chitosan-PVA-kaolinite showed 70% attributed structural changes induced by PVA. Adsorption demonstrated KaolCSL removed 53% blue (MB) 82% Ni2+, SapCPSL superior removal Cr3+ (91%), Cr6+ (19%), silver nanoparticles (>90%). Biocompatibility assessments zebrafish HaCat cells no mortality genotoxicity, 38% increase cell viability Cr-loaded These results suggest use modified can be an effective, low-cost solution purification wastewater treatment.

Language: Английский

Impact of Cationic and Neutral Clay Minerals’ Incorporation in Chitosan and Chitosan/PVA Microsphere Properties DOI Creative Commons
Suelen Delfino Souza,

Hugo Fernando Meira dos Santos,

Larissa Fernandes Bonfim

et al.

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: March 28, 2025

This study investigates the synthesis of chitosan and chitosan/poly(vinyl alcohol) (PVA) microspheres incorporated with kaolinite synthetic saponite clays. The were prepared using a two-step process: (i) reticulation chitosan/PVA or to form clay-biopolymer matrix (ii) further produce double-layered microspheres. resulting materials characterized FTIR, XRD, thermal analysis SEM. Their properties evaluated for water uptake, cation exchange capacity, specific surface area, acid stability, methylene blue, Cr3+, Cr6+, Ni2+ adsorption. XRD confirmed successful polymer interaction both clay structures. Cationic favored dispersion, in more homogeneous Swelling tests revealed that chitosan-kaolinite exhibited 75% swelling, while chitosan-PVA-kaolinite showed 70% attributed structural changes induced by PVA. Adsorption demonstrated KaolCSL removed 53% blue (MB) 82% Ni2+, SapCPSL superior removal Cr3+ (91%), Cr6+ (19%), silver nanoparticles (>90%). Biocompatibility assessments zebrafish HaCat cells no mortality genotoxicity, 38% increase cell viability Cr-loaded These results suggest use modified can be an effective, low-cost solution purification wastewater treatment.

Language: Английский

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