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PENGEMBANGAN MEMBRAN POLYETHERSULFONE MENGGUNAKAN MEDAN LISTRIK SEBAGAI PENGONTROL PORI

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The availability of clean water is a pressing global issue, driving the development of membrane technology as a promising water purification solution. Polyethersulfone (PES) was chosen for filtration membranes due to its superior mechanical properties, thermal stability, and chemical resistance. However, the performance of PES membranes is limited by challenges such as fouling, uneven pore distribution, and hydrophobicity. This study introduces the electric field method as an innovative approach for PES membrane fabrication, aiming to improve its mechanical and physicochemical characteristics for water filtration applications. This study analyzed three membrane specimens made of 30% PES polymer dissolved in N.N-Dimethylformamide with the addition of 1.5%, 2%, and 2.5% AgNO3 reinforcement, which were fabricated using the electric field method. Morphological analysis using Scanning Electron Microscope (SEM) showed that the membrane produced using 25 kV electric field had a fine pore size with an even distribution, while the membrane produced using 15 kV electric field had a larger pore size with a less even distribution, indicating agglomeration and decreased porosity. The tensile test results showed a direct correlation between the highest PES concentration, which was 5.976 MPa, in the membrane with 1.5% AgNO3 and 25 kV electric field, significantly higher than the tensile stress of 2.548 MPa in the membrane with 2.5% AgNO3 and 15 kV electric field. These results indicate that increasing the PES concentration contributes to the increase in crystallinity and polymer chain interactions, which are produced by the electric field. In contrast, Clean Water Permeability (CWP) testing showed the opposite. The membrane (PES, N.N-Dimethylformamide, 1.5% AgNO3) had the highest flux value of 5,333 Lm-².h⁻¹.bar⁻¹, subjected to a 15 kV electric field, while the membrane (PES, N.N-Dimethylformamide, 2.5% AgNO3) had the lowest flux value of 2,167 Lm-².h⁻¹.bar⁻¹, subjected to a 25 kV electric field. The conclusion of this study confirms that the electric field method is effective in controlling the morphology, increasing the mechanical strength, and balancing the permeability of the PES membrane. Keywords: Polyethersulfone, N.N-Dimethylformamide, Silver Nitrate, Electric Field

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Detail Information

Series Title

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Call Number

T1893202025

Publisher

Palembang : Prodi Doktor Ilmu Teknik, Fakultas Teknik Universitas Sriwijaya., 2025

Collation

xiv, 141 hlm.; ilus.; tab, 29 cm

Language

Indonesia

ISBN/ISSN

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Classification

628.107

Content Type

Text

Media Type

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Carrier Type

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Edition

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Subject(s)

Prodi Doktor Ilmu Teknik
Teknologi Sanitasi--Membran Polyethersulfone

Specific Detail Info

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MI

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