Annabighiy, Mohammad Ammar (2026) Pengaruh Durasi Perendaman Nanofiber Polyurethane Dalam Suspensi RGO Dan MWCNT Terhadap Konduktivitas Listrik Dan Indikasi Mekanisme Perkolasi. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Nanofiber polyurethane (PU) merupakan material fleksibel yang memiliki struktur berpori dan luas permukaan tinggi, sehingga berpotensi digunakan sebagai substrat material konduktif. Namun, PU bersifat isolatif sehingga perlu dimodifikasi menggunakan filler konduktif, seperti reduced graphene oxide (rGO) dan multi-walled carbon nanotubes (MWCNT). Efektivitas pembentukan sifat konduktif tersebut tidak hanya dipengaruhi oleh jumlah filler yang terdeposisi, tetapi juga oleh distribusi dan keterhubungan filler dalam membentuk jaringan konduktif. Durasi perendaman diperkirakan menjadi salah satu parameter yang menentukan proses deposisi filler dan pembentukan jaringan perkolasi pada nanofiber PU. Oleh karena itu, penelitian ini bertujuan untuk menganalisis pengaruh durasi perendaman nanofiber PU dalam suspensi rGO dan MWCNT terhadap konduktivitas listrik serta pembentukan jaringan konduktif berdasarkan mekanisme perkolasi. Nanofiber PU difabrikasi menggunakan metode electrospinning, kemudian direndam dalam suspensi rGO dan MWCNT dengan variasi durasi 2 jam, 5 jam, dan 8 jam. Sampel yang diperoleh diuji menggunakan LCR meter untuk memperoleh nilai resistansi, yang selanjutnya digunakan untuk menghitung konduktansi dan konduktivitas listrik. Hasil penelitian menunjukkan bahwa peningkatan durasi perendaman cenderung meningkatkan massa filler yang terdeposisi pada nanofiber PU. Pada sampel PU-rGO, resistansi menurun dari 98 MΩ menjadi 69 MΩ, sedangkan konduktivitas meningkat dari 2,24 × 10⁻⁴ S/m menjadi 3,19 × 10⁻⁴ S/m. Pada sampel PU-MWCNT, konduktivitas meningkat dari 0,512 S/m pada durasi 2 jam menjadi 7,1 S/m pada durasi 5 jam, kemudian menurun menjadi 2,32 S/m pada durasi 8 jam. MWCNT lebih efektif membentuk jaringan perkolasi dibandingkan rGO karena struktur tabungnya yang memanjang lebih mudah saling terhubung dan menjembatani ruang antarserat. Sampel PU-MWCNT dengan durasi perendaman 5 jam ditetapkan sebagai hasil terbaik di antara durasi yang diuji karena menghasilkan resistansi terendah sebesar 3,1 kΩ dan konduktivitas efektif tertinggi sebesar 7,1 S/m.
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Polyurethane (PU) nanofibers are flexible materials characterized by a porous structure and a high surface area, making them potentially suitable as substrates for conductive materials. However, PU is inherently electrically insulating and therefore requires modification using conductive fillers, such as reduced graphene oxide (rGO) and multi-walled carbon nanotubes (MWCNT). The effectiveness of conductive property formation is influenced not only by the amount of deposited filler but also by its distribution and interconnectivity in forming a conductive network. Immersion duration is expected to be one of the parameters governing filler deposition and the formation of a percolation network within PU nanofibers. Therefore, this study aimed to analyze the effect of PU nanofiber immersion duration in rGO and MWCNT suspensions on electrical conductivity and conductive network formation based on the percolation mechanism. PU nanofibers were fabricated using the electrospinning method and subsequently immersed in rGO and MWCNT suspensions for 2, 5, and 8 hours. The resulting samples were characterized using an LCR meter to determine their electrical resistance, which was subsequently used to calculate electrical conductance and conductivity. The results showed that increasing the immersion duration generally increased the amount of filler deposited on the PU nanofibers. In the PU–rGO samples, the resistance decreased from 98 MΩ to 69 MΩ, while the electrical conductivity increased from 2.24 × 10⁻⁴ S/m to 3.19 × 10⁻⁴ S/m. In the PU MWCNT samples, the electrical conductivity increased from 0.512 S/m after 2 hours of immersion to 7.1 S/m after 5 hours, before decreasing to 2.32 S/m after 8 hours. MWCNTs were more effective than rGO in forming a percolation network because their elongated tubular structure facilitated interconnection and enabled them to bridge the gaps between fibers. Among the immersion durations investigated, the PU–MWCNT sample immersed for 5 hours exhibited the best performance, with the lowest resistance of 3.1 kΩ and the highest electrical conductivity of 7.1 S/m.
| Item Type: | Thesis (Other) |
|---|---|
| Uncontrolled Keywords: | durasi perendaman, nanofiber polyurethane, konduktivitas listrik, mekanisme perkolasi, multi walled carbon nanotubes, reduce graphene oxide, polyurethane nanofibers, immersion duration, electrical conductivity, percolation mechanism. |
| Subjects: | Q Science Q Science > QC Physics > QC610.3 Electric conductivity T Technology > TA Engineering (General). Civil engineering (General) > TA418.9.F5 Electrospinning. Nanofibers T Technology > TA Engineering (General). Civil engineering (General) > TA455 Carbon. Nanotubes. T Technology > TA Engineering (General). Civil engineering (General) > TA455.G65 Graphene |
| Divisions: | Faculty of Science and Data Analytics (SCIENTICS) > Physics > 45201-(S1) Undergraduate Thesis |
| Depositing User: | Mohammad Ammar Annabighiy |
| Date Deposited: | 28 Jul 2026 01:12 |
| Last Modified: | 28 Jul 2026 01:12 |
| URI: | http://repository.its.ac.id/id/eprint/138240 |
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