Hadi, Salamulloh Abdul (2025) Analisis Dan Karakterisasi Sifat Mekanik Biokomposit Poly(vinyl alcohol)/Crosslinker/Serbuk Kayu Gemor Kalimantan Untuk Aplikasi Bioresin Adhesive Water-Based. Masters thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Penggunaan material berbasis bio semakin menjadi perhatian dalam rangka mengurangi dampak terhadap lingkungan. Salah satu inovasinya adalah pengembangan biokomposit yaitu kombinasi matriks polimer dengan pengisi alami. Penelitian ini menggunakan poly(vinyl alcohol) (PVA) sebagai matriks dan serbuk kayu gemor Kalimantan sebagai wood powder (WP) sebagai pengisinya. Penelitian ini bertujuan untuk menganalisis pengaruh jenis dan komposisi crosslinker glutaraldehyde (GA), citric acid (CA), dan boric acid (BA) pada PVA/WP terhadap karakterisasi sifat mekanik biokomposit untuk aplikasi bioresin adhesive water-based. Penelitian ini dilakukan dengan proses pencampuran PVA/WP dengan crosslinker yang kemudian dikeringkan dalam cetakan. Pengujian mikroskopis dan Scanning Electron Microscopy Energy Dispersive X-ray (SEM-EDX) diperoleh keberhasilan homogen dan merata pada biokomposit dengan crosslinker. Pengujian Fourier Transform Infrared Spectroscopy (FTIR) diperoleh gugus fungsi utama pada biokomposit dengan crosslinker. Pengujian X-Ray Diffraction (XRD) diperoleh struktur yang semi-kristalin dominan amorf pada biokomposit dengan crosslinker. Pengujian waktu pengerasan diperoleh nilai terendah yaitu 12,7 jam pada sampel PVA/WP + GA (6). Pengujian penyerapan air diperoleh nilai terendah yaitu 20,52% selama 24 jam dan 165% selama 7 hari pada sampel PVA/WP + CA. Pengujian penyusutan diperoleh nilai terendah yaitu 13,51% pada sampel PVA/WP + CA. Pengujian kekuatan geser diperoleh nilai tertinggi yaitu 11,91 MPa pada sampel PVA/WP + CA (4). Pengujian kekuatan tarik diperoleh nilai tertinggi yaitu 20,53 MPa pada sampel PVA/WP + CA (4). Pengujian kekerasan diperoleh nilai tertinggi yaitu 71 shore D pada sampel PVA/WP + CA (4). Pengujian tekan diperoleh nilai tertinggi yaitu 73,1 MPa pada sampel PVA/WP + CA (4). Hal ini menandakan bahwa crosslinker berhasil membentuk jaringan yang lebih kuat antar komponen sehingga meningkatkan sifat mekanik pada biokomposit. Berdasarkan hasil karakterisasi dan pengujian mekanik, biokomposit PVA/WP + CA (4) dengan 4 per hundred resin (phr) CA diidentifikasi sebagai komposisi optimum untuk aplikasi bioresin adhesive water-based.
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The use of bio-based materials is increasingly gaining attention in order to reduce environmental impact. One innovation is the development of biocomposites, which are combinations of polymer matrix with natural fillers. This study uses poly(vinyl alcohol) (PVA) as the matrix and Kalimantan gemor wood powder (WP) as the filler. The aim of this study is to analyze the influence of the type and composition of crosslinkers glutaraldehyde (GA), citric acid (CA), and boric acid (BA) on PVA/WP on the mechanical properties of the biocomposite for water-based bioresin adhesive applications. The study was conducted by mixing PVA/WP with the crosslinker, which was then dried in a mold. Microscopic testing and Scanning Electron Microscopy Energy Dispersive X-ray (SEM-EDX) revealed successful homogenization and uniformity in the biocomposite with crosslinkers. Fourier Transform Infrared Spectroscopy (FTIR) testing identified the main functional groups in the biocomposite with crosslinkers. X-Ray Diffraction (XRD) testing revealed a semi-crystalline structure dominated by amorphous phases in the biocomposite with the crosslinkers. Curing time testing resulted in the lowest value of 12.7 hours for PVA/WP + GA (6) sample. Water absorption testing resulted in the lowest value of 20.52% over 24 hours and 165% over 7 days for PVA/WP + CA sample. Shrinkage testing resulted in the lowest value of 13.51% for PVA/WP + CA sample. Shear strength testing resulted in the highest value of 11.91 MPa for PVA/WP + CA (4) sample. Tensile strength testing resulted in the highest value of 20.53 MPa for PVA/WP + CA (4) sample. Hardness testing resulted in the highest value of 71 Shore D for PVA/WP + CA (4) sample. Compressive testing resulted in the highest value of 73.1 MPa for PVA/WP + CA (4) sample. This indicates that the crosslinker successfully formed a stronger network between components, thereby enhancing the mechanical properties of the biocomposite. PVA/WP + CA (4) with 4 per hundred resin (phr) CA was identified as the optimal composition for water-based bioresin adhesive applications based on characterization and mechanical test results.
| Item Type: | Thesis (Masters) |
|---|---|
| Uncontrolled Keywords: | Biokomposit, bioresin, crosslinker, poly(vinyl alcohol), dan wood powder. ====================================================== Biocomposites, bioresin, crosslinker, poly(vinyl alcohol), and wood powder. |
| Subjects: | T Technology > TP Chemical technology > TP1140 Polymers T Technology > TP Chemical technology > TP1151 Special molding and casting processes T Technology > TS Manufactures > TS183 Manufacturing processes. Lean manufacturing. |
| Divisions: | Faculty of Industrial Technology and Systems Engineering (INDSYS) > Material & Metallurgical Engineering > 27101-(S2) Master Thesis |
| Depositing User: | Salamulloh Abdul Hadi |
| Date Deposited: | 31 Jul 2025 08:02 |
| Last Modified: | 31 Jul 2025 08:02 |
| URI: | http://repository.its.ac.id/id/eprint/125200 |
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