Aprilia, Dewi (2025) Studi Pengaruh Persentase Dispersan BYK-111 Terhadap Morfologi Dan Sifat Tarik Pada Komposit tBA/BaTiO₃/CNT Menggunakan Metode Digital Light Processing Untuk Aplikasi Printable Wearable Device. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Pengembangan material fleksibel dan kuat untuk aplikasi wearable device menuntut kombinasi antara ketahanan mekanik, elastisitas, serta kemampuan cetak presisi tinggi. Salah satu pendekatan yang menjanjikan adalah penggunaan resin berbasis tert-butyl acrylate (tBA) yang dikombinasikan dengan filler anorganik (BaTiO3) dan karbon yang difabrikasi melalui metode Digital Light Processing (DLP). Penelitian ini berfokus pada pengaruh konsentrasi dispersan BYK-111 terhadap komposit Poly(tBA)/BaTiO3/CNT yang difabrikasi dengan Digital Light Processing (DLP), dengan tujuan mengoptimalkan homogenitas, efisiensi fotopolimerisasi, dan sifat mekanik. Hasil uji sedimentasi menunjukkan stabilitas dispersi slurry mencapai puncaknya pada 10 wt% BYK-111 (62%), menurun pada 20 wt% (58%) dan 30 wt% (54%), dibandingkan 22% tanpa dispersan. Kedalaman curing tertinggi dicapai pada 20 wt% BYK-111, sementara 10 wt% menunjukkan kedalaman terendah. Analisis SEM-EDX mengonfirmasi morfologi paling homogen pada 20 wt% BYK-111 dengan partikel terdistribusi merata dan minim void. Pengujian XRD menunjukkan intensitas sinyal amorf dari Poly(tBA) menurun seiring peningkatan BYK-111. FTIR mengidentifikasi peningkatan intensitas pita OH (3100-3500 cm⁻¹) dengan penambahan BYK-111, menandakan pembentukan ikatan fisik antara dispersan dengan Poly(tBA) yang mendukung peran BYK-111 sebagai agen kopling. Selanjutnya, hasil uji tarik menunjukkan Ultimate Tensile Strength (UTS), Modulus Young (E), dan Elongation at Break (εb) tertinggi pada 20 wt% BYK-111. Sedangkan, pada konsentrasi 0 wt% dan 30 wt%, secara konsisten menghasilkan performa sub-optimal akibat aglomerasi berlebih atau over-dispersion, yang mengganggu struktur dan mengurangi kekuatan material. Hal tersebut menunjukkan bahwa pemilihan konsentrasi dispersan yang tepat merupakan hal yang penting untuk mencapai keseimbangan sifat fungsional dan mekanik pada komposit berbasis DLP.
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The development of flexible and durable materials for wearable device applications requires a combination of mechanical strength, elasticity, and high-precision printability. One promising approach involves the use of tert-butyl acrylate (tBA)-based resin combined with inorganic (BaTiO₃) and carbon fillers, fabricated using the Digital Light Processing (DLP) method. This study focuses on the effect of BYK-111 dispersant concentration on Poly(tBA)/BaTiO₃/CNT composites fabricated using Digital Light Processing (DLP), with the aim of optimizing dispersion homogeneity, photopolymerization efficiency, and mechanical properties. Sedimentation tests indicated that slurry dispersion stability peaked at 10 wt% BYK111 (62%), decreasing to 58% at 20 wt% and 54% at 30 wt%, compared to 22% without dispersant. The greatest curing depth was achieved at 20 wt% BYK-111, whereas the lowest was observed at 10 wt%. SEM-EDX analysis confirmed the most homogeneous morphology at 20 wt% BYK-111, characterized by uniformly distributed particles and minimal voids. XRD results revealed a decrease in the amorphous signal intensity of Poly(tBA) with increasing BYK-111 content. FTIR analysis showed an increase in the -OH absorption band (3100–3500 cm⁻¹) with BYK-111 addition, indicating the formation of physical interactions between the dispersant and Poly(tBA), thus supporting the role of BYK-111 as a coupling agent. Furthermore, tensile testing demonstrated that Ultimate Tensile Strength (UTS), Modulus Young (E), and Elongation at Break (εb) were all highest at 20 wt% BYK-111. In contrast, the 0 wt% and 30 wt% concentrations consistently exhibited sub-optimal performance due to excessive agglomeration or over-dispersion, which disrupted the structural integrity and reduced the material’s strength. These findings highlight the importance of selecting an appropriate dispersant concentration to achieve a balance between functional and mechanical properties in DLP-based composites.
| Item Type: | Thesis (Other) |
|---|---|
| Uncontrolled Keywords: | Aglomerasi, BaTiO3, BYK-111, Komposit, Agglomeration, BaTiO3, BYK-111, Composite |
| Subjects: | T Technology > TP Chemical technology > TP1140 Polymers T Technology > TS Manufactures T Technology > TS Manufactures > TS161 Materials management. |
| Divisions: | Faculty of Industrial Technology > Material & Metallurgical Engineering > 28201-(S1) Undergraduate Thesis |
| Depositing User: | Dewi Oviana Rizqi Aprilia |
| Date Deposited: | 30 Jul 2025 10:15 |
| Last Modified: | 30 Jul 2025 10:15 |
| URI: | http://repository.its.ac.id/id/eprint/122891 |
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