Synthesis of high-molecular-weight poly (itaconic-co-methacrylic acid) copolymers for the fabrication of nanocomposite hydrogels for cationic dye removal

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389013%3A_____%2F25%3A00638079" target="_blank" >RIV/61389013:_____/25:00638079 - isvavai.cz</a>

Výsledek na webu

<a href="https://link.springer.com/article/10.1007/s10924-025-03624-2" target="_blank" >https://link.springer.com/article/10.1007/s10924-025-03624-2</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s10924-025-03624-2" target="_blank" >10.1007/s10924-025-03624-2</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Synthesis of high-molecular-weight poly (itaconic-co-methacrylic acid) copolymers for the fabrication of nanocomposite hydrogels for cationic dye removal

Popis výsledku v původním jazyce

This study introduces a novel class of physically crosslinked hydrogels synthesized from high-molecular-weight copolymers consisting of itaconic acid (IA), methacrylic acid (MAA) and laponite RD, which efficiently removes cationic dyes. The copolymers synthesized via free-radical polymerization in a deep eutectic solvent demonstrated increased thermal stability with increasing MAA content. Rheological assessments revealed elastic solid behavior (G′ > G″), with decreased stiffness correlated with increased MAA content, which was attributed to diminished electrostatic interactions. Structural analyses, including WAXS/SAXS and TEM, confirmed the complete exfoliation of the clay and the formation of a hierarchical network, upon dye adsorption, an expansion of the basal spacing to 15–20 nm was observed. The hydrogels exhibited a swelling capacity of up to 38 g/g in pure water, which was reduced to 10 g/g in saline conditions. The highest adsorption capacity of basic fuchsin was determined to be 70 mg/g, achieving a 99.5% removal efficiency using 0.05 g/L of adsorbent over a 2-hour period. The adsorption process followed the Freundlich isotherm and was well described by a nonlinear pseudo-first-order (PFO) kinetic model. The dye adsorption process was spontaneous, and exothermic and followed physisorption. Crosslinking with calcium ions substantially increased the storage modulus by 252-fold and controlled the swelling ratio to 15.9 ± 0.7 g/g, facilitating regeneration cycles with 99.2 ± 0.2% efficiency. These findings position IA-MAA laponite RD hydrogels as sustainable materials with significant potential for application in dye-contaminated wastewater treatment.

Název v anglickém jazyce

Synthesis of high-molecular-weight poly (itaconic-co-methacrylic acid) copolymers for the fabrication of nanocomposite hydrogels for cationic dye removal

Popis výsledku anglicky

This study introduces a novel class of physically crosslinked hydrogels synthesized from high-molecular-weight copolymers consisting of itaconic acid (IA), methacrylic acid (MAA) and laponite RD, which efficiently removes cationic dyes. The copolymers synthesized via free-radical polymerization in a deep eutectic solvent demonstrated increased thermal stability with increasing MAA content. Rheological assessments revealed elastic solid behavior (G′ > G″), with decreased stiffness correlated with increased MAA content, which was attributed to diminished electrostatic interactions. Structural analyses, including WAXS/SAXS and TEM, confirmed the complete exfoliation of the clay and the formation of a hierarchical network, upon dye adsorption, an expansion of the basal spacing to 15–20 nm was observed. The hydrogels exhibited a swelling capacity of up to 38 g/g in pure water, which was reduced to 10 g/g in saline conditions. The highest adsorption capacity of basic fuchsin was determined to be 70 mg/g, achieving a 99.5% removal efficiency using 0.05 g/L of adsorbent over a 2-hour period. The adsorption process followed the Freundlich isotherm and was well described by a nonlinear pseudo-first-order (PFO) kinetic model. The dye adsorption process was spontaneous, and exothermic and followed physisorption. Crosslinking with calcium ions substantially increased the storage modulus by 252-fold and controlled the swelling ratio to 15.9 ± 0.7 g/g, facilitating regeneration cycles with 99.2 ± 0.2% efficiency. These findings position IA-MAA laponite RD hydrogels as sustainable materials with significant potential for application in dye-contaminated wastewater treatment.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10404 - Polymer science

Projekt

<a href="/cs/project/GF25-15669K" target="_blank" >GF25-15669K: Kovalentní adaptabilní sítě z obnovitelných zdrojů umožňující recyklaci</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Polymers and the Environment

ISSN

1566-2543

e-ISSN

1572-8919

Svazek periodika

33

Číslo periodika v rámci svazku

August

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

21

Strana od-do

3785-3805

Kód UT WoS článku

001510298200001

EID výsledku v databázi Scopus

2-s2.0-105008324229