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Vol. 35 No. 12 (2023): Vol 35 Issue 12, 2023

Copyright (c) 2023 HENDRAWAN HENDRAWAN, Hafiz Aji Aziz, Fitri Khoerunnisa, Rena Rizky Fajriyah, Diah Indriati

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This work is licensed under a Creative Commons Attribution 4.0 International License.

Effect of pH of Medium and Initial Salt Quantity on Release Behaviour of Potassium Chloride from Leached Poly(vinyl alcohol)/Glutaraldehyde

https://doi.org/10.14233/ajchem.2023.30316
Hendrawan Hendrawan
Department of Chemistry, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudhi No. 229, Bandung 40154, West Java, Indonesia
https://orcid.org/0000-0003-2439-6671
Hafiz Aji Aziz
Department of Chemistry, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudhi No. 229, Bandung 40154, West Java, Indonesia
https://orcid.org/0000-0002-6825-4539
Fitri Khoerunnisa
Department of Chemistry, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudhi No. 229, Bandung 40154, West Java, Indonesia
https://orcid.org/0000-0002-0198-756X
Rena Rizky Fajriyah
Department of Chemistry, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudhi No. 229, Bandung 40154, West Java, Indonesia
Diah Indriati
Department of Chemistry, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudhi No. 229, Bandung 40154, West Java, Indonesia

Corresponding Author(s) : Hendrawan Hendrawan

hendrawan@upi.edu

Asian Journal of Chemistry, Vol. 35 No. 12 (2023): Vol 35 Issue 12, 2023

Abstract

The purpose of present work is to study the release kinetics of KCl from leached poly(vinyl alcohol)/glutaraldehyde (PVA/GA) hydrogels
into demineralized water under various pH conditions. The PVA/GA hydrogels, which was prepared by mixing method, were leached
several times using demineralized water. The physico-chemical properties of the hydrogels were investigated using FT-IR and SEM
techniques. The release kinetics of KCl from the hydrogel into the demineralized water at various pH conditions and initial quantity of
KCl inside the hydrogel were studied using conductometric method. It was found that the trapped residual inside the hydrogel matrix can be well removed by repeated leaching. The pH of medium affects the rate of release and the amount of KCl at equilibrium conditions. The kinetics of KCl desorption into the media follows pseudo first-order kinetics, which indicates that the release kinetics is controlled by the initial amount of KCl in the PVA/GA matrix.

Keywords

Conductometry leaching PVA/GA hydrogel potassium chloride release
Hendrawan, H., Aziz, H. A., Khoerunnisa, F., Fajriyah, R. R., & Indriati, D. (2023). Effect of pH of Medium and Initial Salt Quantity on Release Behaviour of Potassium Chloride from Leached Poly(vinyl alcohol)/Glutaraldehyde. Asian Journal of Chemistry, 35(12), 2999–3004. https://doi.org/10.14233/ajchem.2023.30316
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