Analisis Morfologi Dan Performa Antibakteri Komposit Nanofiber Quantum DOTS Cu2O Dan Cu2O/TiO2

Oktriliardi, Ega (2022) Analisis Morfologi Dan Performa Antibakteri Komposit Nanofiber Quantum DOTS Cu2O Dan Cu2O/TiO2. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Dalam optimalisasi aplikasi material komposit nanofiber antibakteri, studi komprehensif mengenai morfologi permukaan dan hubungannya terhadap sifat antibakteri perlu dilakukan. Penelitian ini dilakukan dengan tujuan memahami morfologi permukaan komposit nanofiber quantum dots, sifat antibakteri yang dimiliki, serta hubungan morofologi komposit nanofiber quantum dots terhadap sifat antibakteri yang dimiliki. Dalam penelitian ini, quantum dots disintesis menggunakan metode wet chemical. Sedangkan fabrikasi nanofiber quantum dots dilakukan dengan teknik electrospinning dengan variasi QDs yang disematkan yaitu Cu2O dan Cu2O/TiO2 QDs dengan konsentrasi 1,1 dan 15 ppm masing-masing. Adapun objek analisis penelitian ini berupa diameter fiber, kekasaran permukaan, hidrofobisitas, ukuran pori dan muatan permukaan dari masing-masing sampel. Dari penelitian yang telah dilakukan, didapatkan diameter fiber hasil fabrikasi untuk variasi Cu2O 1,1 ppm, Cu2O 15 ppm, Cu2O/TiO2 1,1 ppm, dan Cu2O/TiO2 15 ppm adalah 512.92± 8.32 nm, 502.54± 209 nm, 632.67 ± 5.76 nm, 343.02± 14,30 nm berturut-turut dimana pada variasi NF tanpa QDs memiliki nilai diameter fiber 322,96 ± 4,64 nm. Sedangkan kekasaran permukaan tiap sampel 180.132 nm, 219.395 nm, 165.434 nm, 243.461 nm berturut-turut. Dalam aspek hidrofobisitas setiap sampel memiliki sifat hidrofobik dengan nilai contact angle 111o , 136o , 126o , 129o tiap sampel berturut-turut. Nilai pore size yang dihasilkan pada tiap sampel adalah 3.124 nm, 7.316 nm, 10.034 nm, 11.457 nm berturut-trut. Sedangkan, nilai zeta potensial yang mewakili sampel PAN/PCL, Cu2O QDs, Cu2O/TiO2 QDs, PAN/PCL/Cu2O, PAN/PCL/Cu2O/TiO2 adalah -8.12 mV, -2.89mV, 1.29 mV, -25 mV, -4.81 mV. Berdasarkan rangkaian penelitian yang sudah dilakukan, komposit nanofiber quantum dots memiliki morfologi yang berbeda-beda pada setiap variasi. Sifat antibakteri komposit nanofiber quantum dots Cu2O dan Cu2O/TiO2 menunjukkan adanya sifat antibakteri yang berbeda bergantung pada konsentrasi QDs yang disematkan. Sedangkan, melalui hasil observasi dan analisis yang dilakukan ditemukan bahwa morfologi permukaan komposit nanofiber memberikan pengaruh terhadap performa antibakteri yang dimiliki, baik itu dalam hal meningkatkan performa antibakteri yang dimiliki, ataupun justru menurunkan performa antibakteri yang dimiliki. ===============================================================================================================================
In optimizing the application of antibacterial nanofiber composite materials, a comprehensive study of the surface morphology and its relationship to antibacterial properties needs to be carried out. This research aimed to understand the surface morphology of the nanofiber quantum dots composite, its antibacterial properties, and the morphological relationship of the quantum nanofiber composite to its antibacterial properties. In this study, quantum dots were synthesized using the wet chemical method. At the same time, the nanofiber quantum dots fabrication was carried out by electrospinning technique with variations of embedded QDs, namely Cu2O and Cu2O/TiO2 QDs with concentrations of 1.1 and 15 ppm, respectively. The object of this research analysis is fiber diameter, surface roughness, hydrophobicity, pore size, and surface charge of each sample. From the research that has been carried out, the diameter of the fabricated fiber for variations of Cu2O 1.1 ppm, Cu2O 15 ppm, Cu2O/TiO2 1.1 ppm, and Cu2O/TiO2 15 ppm is 512.92±8.32 nm, 502.54±209 nm, 632.67±5.76 nm, 343.02±14.30 nm respectively while the NF variant without QDs acquiring 322,96±4,64 nm in fiber diameter. Meanwhile, the surface roughness of each sample was 180,132 nm, 219,395 nm, 165,434 nm, and 243,461 nm, respectively. Regarding hydrophobicity, each sample has hydrophobic properties with contact angle values of 111o, 136o , 126o , and 129o for each sample respectively. The resulting pore size values for each sample were 3,124 nm, 7,316 nm, 10,034 nm, and 11,457 nm, respectively. Meanwhile, the zeta potential values representing samples of PAN/PCL, Cu2O QDs, Cu2O/TiO2 QDs, PAN/PCL/Cu2O, PAN/PCL/Cu2O/TiO2 are -8.12 mV, -2.89mV, 1.29 mV, -25 mV, - 4.81 mV. Based on a series of studies that have been carried out, nanofiber quantum dots composites have different morphologies in each variation. Antibacterial properties of nanofiber quantum dots Cu2O and Cu2O/TiO2 composites showed different antibacterial properties depending on the concentration of embedded QDs. Meanwhile, through the results of observations and analyzes, it was found that the surface morphology of the nanofiber composite had an influence on its antibacterial performance, both in terms of increasing its antibacterial performance or decreasing its antibacterial performance.

Item Type:	Thesis (Other)
Additional Information:	RSMt 620.115 Okt a-1 2022
Uncontrolled Keywords:	Nanofiber, Quantum Dots, Morfologi, Antibakteri, Quantum Dots, Morphology, Antibacteria
Subjects:	T Technology > TL Motor vehicles. Aeronautics. Astronautics > TL240.5 Composite materials
Divisions:	Faculty of Industrial Technology > Material & Metallurgical Engineering > 28201-(S1) Undergraduate Thesis
Depositing User:	Mr. Marsudiyana -
Date Deposited:	11 Feb 2025 07:31
Last Modified:	11 Feb 2025 07:31
URI:	http://repository.its.ac.id/id/eprint/118653

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