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Methamidophos removal from aqueous solutions using a super adsorbent based on crosslinked poly(vinyl alcohol) hydrogel
Author(s) -
Valdés Oscar,
ÁvilaSalas Fabián,
Marican Adolfo,
Fuentealba Natalia,
Villaseñor Jorge,
ArenasSalinas Mauricio,
Argandoña Yerko,
DuránLara Esteban F.
Publication year - 2018
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.45964
Subject(s) - vinyl alcohol , aqueous solution , methamidophos , thermogravimetric analysis , materials science , self healing hydrogels , fourier transform infrared spectroscopy , chemical engineering , polymer chemistry , swelling , adsorption , nuclear chemistry , chemistry , polymer , composite material , organic chemistry , pesticide , agronomy , biology , engineering
This study describes the absorption of methamidophos (MMP) from aqueous solution by crosslinked poly(vinyl alcohol) (PVA) hydrogel synthesized using malic acid (MA) as a crosslinker (CLPHMA). The prepared hydrogels were characterized by FTIR spectroscopy, scanning electron microscopy, and the thermal properties were studied by using thermal gravimetric analysis. Also, the swelling index as a function of PVA:MA composition and pH were studied. An in silico rational study, which involved all‐atom molecular dynamics simulations of PVA:MA systems in proportions 10:2, 10:4, and 10:6 was performed. The in silico studies concluded that the more suitable crosslinking degree for MMP pesticide removal is with the 20% (wt %) of crosslinker (CLPHMA‐20). The experimental analysis of MMP removal with CLPHMA was performed as well. It was found that the prepared CLPHMA‐20 had a great efficiency to recover around 86% of MMP from their solutions. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018 , 135 , 45964.