Pengaruh Konsentrasi Nanoselulosa pada Pelapis Berbasis Epoksi untuk Perlindungan Korosi Baja SS400 dalam NaCl 3,5% (w/v)

Ramadhani, Nabilah Rafilah (2026) Pengaruh Konsentrasi Nanoselulosa pada Pelapis Berbasis Epoksi untuk Perlindungan Korosi Baja SS400 dalam NaCl 3,5% (w/v). Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Pelapis nanoselulosa/epoksi telah dibuat pada penelitian ini dengan penambahan nanoselulosa dengan variasi nanoselulosa 0% (w/w) dengan notasi ENC0, nanoselulosa 1% (w/w) dengan notasi ENC1, nanoselulosa 2% (w/w) dengan notasi ENC2, nanoselulosa 3% (w/w) dengan notasi ENC3, dan nanoselulosa 4% (w/w) dengan notasi ENC4. Evaluasi kinerja pelapis diuji menggunakan metode Potentiodynamic Polarization (PDP), Electrochemical Impedance Spectroscopy (EIS), dan weight loss (kehilangan massa). Karakterisasi dilakukan menggunakan Fourier Transform Infrared Spectroscopy - Attenuated Total Reflectance (FTIR-ATR) untuk mengidentifikasi gugus fungsi dan interaksi kimia, serta Scanning Electron Microscope-Energy Dispersive X-ray (SEM-EDX) untuk mengamati morfologi permukaan dan distribusi unsur baja SS400 tanpa dan dengan pelapis nanoselulosa/epoksi. Pelapis ENC3 menghasilkan efisiensi inhibisi (EI) terbaik pada metode PDP yakni sebesar 99,99% dan pada metode EIS sebesar 81,54%. Hasil metode kehilangan massa selama 3 jam menunjukkan pelapis ENC3 mengalami kehilangan massa baja SS400 hanya 0,002 gram dengan EI sebesar 92,59% dibandingkan tanpa pelapis (BLANKO2) yang mengalami kehilangan massa sebesar 0,027 gram. Hasil tersebut menunjukkan bahwa penambahan nanoselulosa 3% (w/w) dapat meningkatkan inhibisi korosi pada baja SS400.
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In this study, nanocellulose/epoxy coatings were prepared with varying nanocellulose con-tents 0% (w/w) with notation ENC0, 1% (w/w) with notation ENC1, 2% (w/w) with notation (ENC2), 3% (w/w) with notation ENC3, and 4% (w/w) with notation ENC4. Coating perfor-mance was evaluated using Potentiodynamic Polarization (PDP), Electrochemical Imped-ance Spectroscopy (EIS), and weight loss methods. Characterization was performed using Fourier Transform Infrared Spectroscopy-Attenuated Total Reflectance (FTIR-ATR) to iden-tify functional groups and chemical interactions, and Scanning Electron Microscopy-Energy Dispersive X-ray (SEM-EDX) to observe surface morphology and elemental distribution on SS400 steel, both uncoated and coated with the nanocellulose/epoxy composite. The ENC3 coating exhibited the highest inhibition efficiency (IE), achieving 99.99% via the PDP meth-od and 81.54% via the EIS method. Weight loss results obtained over a 3-hour period showed that the SS400 steel with the ENC3 coating lost only 0.002 grams of mass with EI 92.59%, compared to 0.027 grams for the blank sample (BLANKO2). These results demonstrate that the addition of 3% (w/w) nanocellulose enhances corrosion inhibition for SS400 steel.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Baja SS400, epoksi, korosi, nanoselulosa, pelapis Coating, corrosion, epoxy, nanocellulose, SS400 steel,
Subjects:	Q Science > QD Chemistry > QD115 Electrochemical analysis Q Science > QD Chemistry > QD383 Epoxy Compounds Q Science > QD Chemistry > QD553 Electrochemistry. Electrolysis Q Science > QD Chemistry > QD75.2 Chemistry, Analytic
Divisions:	Faculty of Science and Data Analytics (SCIENTICS) > Chemistry > 47201-(S1) Undergraduate Thesis
Depositing User:	Nabilah Rafilah Ramadhani
Date Deposited:	01 Aug 2026 03:39
Last Modified:	01 Aug 2026 03:39
URI:	http://repository.its.ac.id/id/eprint/141581

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