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Meeting of Natural Polymers - EPNAT

Vol. 2 No. 2 (2019): October-February

Effect of crosslinker and nanostructure on adsorption and release of paraquat herbicide from different natural hydrogel nanocomposites

DOI
https://doi.org/10.25061/2595-3931/IJAMB/2019.v2i2.36
Published
2020-03-29

Abstract

Hidrogéis compostos em polímeros naturais que tenham sido usados em diferentes setores devido a suas propriedades de biocompatibilidade, biodegradabilidade, custo relativamente baixo e atoxicidade. O objetivo deste estudo foi preparar hidrogéis de alginato / amido reticulados com diferentes ícones (Mn 2+ , Zn 2+ ou Ca 2+ ), incluir zeólito ou nanoclay, e avaliar o efeito do reticador e nanoestrutura na adsorção e comportamento de seleção do herbicida paraquat. Os hidrogéis e seus nanocompósitos foram preparados por imersão de soluções de alginato / amido, alginato / amido / nanoclay ou alginato / amido / zeólita em recipientes que recebem uma solução reticuladora (MnCl 2 , ZnCl 2ou CaCl 2 ) a 25 ° C. Todos os hidrogênios apresentaram boa capacidade de adsorção, principalmente os hidrogênios nanoestruturados com nanoclay e zeólito. Como recursos polares, selecione alta interação com moléculas de paraquat. O comportamento da liberação também foi muito interessante, sendo que a quantidade de solução de formação de nanocompósitos de hidrogel pode controlar a liberação de paraquat, que tipos de materiais podem ser usados como veículos de transporte no sistema de liberação controlada.

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