Hadi, M. Veri Setia (2026) Fabrikasi dan Karakterisasi Struktur Nanofiber Polyurethane Terimpregnasi Multi-Walled Carbon Nanotubes (MWCNT) dan Reduced Graphene Oxide (rGO) sebagai Material Fleksibel Berbasis Perubahan Resistansi. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Nanofiber merupakan salah satu bentuk rekayasa nanomaterial yang memiliki karakteristik berbeda dibandingkan material bulk, sehingga banyak dikembangkan sebagai dasar material fleksibel. Dalam konteks ini, nanofiber polyurethane memiliki fleksibilitas dan struktur berpori yang mendukung proses modifikasi, tetapi sifat listriknya masih perlu ditingkatkan melalui penambahan filler konduktif seperti MWCNT dan rGO. Karakterisasi struktur, morfologi, dan gugus fungsi kemudian diperlukan untuk memahami pengaruh proses modifikasi tersebut terhadap perubahan sifat material. Nanofiber polyurethane berhasil difabrikasi menggunakan metode electrospinning, kemudian dimodifikasi melalui proses impregnasi dalam dispersi rGO dan MWCNT secara terpisah dengan variasi lama perendaman 2, 5, dan 8 jam untuk setiap jenis filler karbon. Hasil karakterisasi morfologi menunjukkan bahwa penambahan rGO dan MWCNT mengubah permukaan nanofiber polyurethane melalui terbentuknya lapisan filler pada jaringan serat. Hasil dari XRD memperlihatkan adanya perubahan pola difraksi pada sampel setelah proses impregnasi. Selain itu, pengujian FTIR dilakukan untuk mengidentifikasi gugus fungsi pada filler serta meninjau kemungkinan interaksi antarmuka antara filler dan nanofiber polyurethane. Hasil citra SEM menunjukkan bahwa distribusi filler tampak lebih merata pada variasi perendaman tertentu, sedangkan perendaman yang terlalu lama cenderung meningkatkan kemungkinan aglomerasi filler pada permukaan serat. Berdasarkan keseluruhan hasil karakterisasi, variasi perendaman 5 jam menunjukkan kondisi yang relatif lebih baik karena mampu menghasilkan distribusi filler yang lebih merata dan membentuk jalur konduktif awal yang lebih efektif dibandingkan variasi perendaman lainnya.
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Nanofibers are a type of engineered nanomaterial with characteristics distinct from those of bulk materials, making them a popular choice as a base for flexible materials. In this context, polyurethane nanofibers possess flexibility and a porous structure that facilitate modification processes; however, their electrical properties still need to be enhanced through the addition of conductive fillers such as MWCNT and rGO. Characterization of the structure, morphology, and functional groups is then necessary to understand the effect of these modification processes on changes in material properties. Polyurethane nanofibers were successfully fabricated using the electrospinning method and then modified through a separate impregnation process in rGO and MWCNT dispersions, with soaking times of 2, 5, and 8 hours for each type of carbon filler. Morphological characterization results showed that the addition of rGO and MWCNT altered the surface of the polyurethane nanofibers through the formation of a filler layer on the fiber network. XRD results revealed changes in the diffraction patterns of the samples following the impregnation process. Additionally, FTIR analysis was conducted to identify functional groups in the fillers and to examine potential interfacial interactions between the fillers and the polyurethane nanofibers. SEM images show that filler distribution appears more uniform at certain immersion times, whereas excessively long immersion tends to increase the likelihood of filler agglomeration on the fiber surface. Based on the overall characterization results, the 5-hour immersion condition showed relatively better performance because it produced a more uniform filler distribution and formed more effective initial conductive pathways compared to other immersion times.
| Item Type: | Thesis (Other) |
|---|---|
| Uncontrolled Keywords: | Electrospinning, Filler karbon, Impregnasi, Nanofiber, Polyurethane. ========================================================== Electrospinning, Carbon filler, Impregnation, Nanofiber, Polyurethane. |
| Subjects: | Q Science > QC Physics > QC610.3 Electric conductivity Q Science > QD Chemistry > QD341.H9 Graphene T Technology > TP Chemical technology > TP1140 Polymers |
| Divisions: | Faculty of Science and Data Analytics (SCIENTICS) > Physics > 45201-(S1) Undergraduate Thesis |
| Depositing User: | M. Veri Setia Hadi |
| Date Deposited: | 20 Jul 2026 06:03 |
| Last Modified: | 20 Jul 2026 06:03 |
| URI: | http://repository.its.ac.id/id/eprint/135487 |
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