Skripsi
PENGARUH VARIASI TEGANGAN LISTRIK TERHADAP KARAKTERISTIK MEMBRAN POLYETHERSULFONE (PES) DENGAN CAMPURAN ZAT ADITIF CARBON NANOTUBE (CNT) UNTUK FILTRASI AIR
The decreasing availability of clean water due to environmental pollution has encouraged the development of filtration technology using membranes. This study aims to determine the effect of variations in electrical voltage on the characteristics using the electric field method on PES–CNT membranes for water filtration. The results showed that increasing the electrical voltage from 15 kV (M1) to 30 kV (M3) increased the pore size and uniformity, with M3 having the largest average size (11.188 ± 0.38) compared to M1 (10.272 ± 0.99). From a mechanical perspective, the tensile strength of M1 (4.9983 MPa) and M2 (4.8939 MPa) was almost the same, while M3 was lower (2.7767 MPa) due to its more porous structure. The highest elongation was found in M2 (4.4%), while the highest Young's modulus was found in M1 (133.288 MPa). In the permeability test, the highest value was obtained by M3 (1.2898 L/m²·h·P) due to a more open pore structure, but increasing pressure caused a decrease in permeability due to membrane compaction. Membranes with higher electrical voltages showed better performance, thus having potential for water filtration applications.
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