Penambahan Nanoselulosa Sekam Padi Terhadap Kekasaran Permukaan Basis Gigi Tiruan Resin Akrilik Polimerisasi Panas
DOI:
https://doi.org/10.18196/di.v10i2.12309Keywords:
Kekasaran Permukaan, Nanoselulosa, Resin Akrilik Polimerisasi Panas, Sekam PadiAbstract
Basis gigi tiruan adalah bagian yang berkontak langsung dengan jaringan lunak rongga mulut. Bahan basis gigi tiruan yang paling umum digunakan yaitu resin akrilik polimerisasi panas. Bahan ini masih memiliki kekurangan yaitu sifat mekanis rendah, meninggalkan monomer sisa dan adanya porositas yang berpengaruh terhadap kekasaran permukaan. Nanoselulosa sekam padi memiliki potensi sebagai alternatif untuk memperbaiki sifat bahan resin akrilik polimerisasi panas. Nanoselulosa memiliki keunggulan diantaranya memiliki luas permukaan yang tinggi sehingga dapat digunakan sebagai reinforcing nanofiller pada material komposit seperti resin akrilik. Tujuan penelitian ini adalah untuk mengetahui pengaruh penambahan nanoselulosa sekam padi terhadap kekasaran permukaan pada resin akrilik polimerisasi panas. Jenis penelitian ini adalah eksperimental laboratoris dengan post-test only control group design. Sampel penelitian terdiri dari 6 kelompok, masing-masing kelompok terdiri dari 8 sampel. Kelompok K1, K2, K3, K4, K5 dan K0 berturut-turut merupakan kelompok dengan penambahan nanoselulosa 1%, 2%, 3%, 4%, 5% serta kontrol (tanpa nanoselulosa). Hasil penelitian menunjukkan semua kelompok dengan penambahan nanoselulosa memiliki nilai kekasaran permukaan lebih tinggi dibanding kelompok kontrol. Penambahan nanoselulosa 5% (K5) memiliki nilai kekasaran permukaan tertinggi yaitu 0,3242 ± 0.0066µm kemudian diikuti berturut-turut oleh kelompok K4, K3, K2, K1 dan kelompok kontrol (K0) memiliki nilai kekasaran permukaan terendah yaitu 0.1558 ± 0.0023µm. Hasil uji SEM pada setiap kelompok menunjukkan terdapat aglomerasi dan ukuran porus yang bervariasi. Kesimpulan penelitian ini adalah penambahan nanoselulosa sekam padi tidak lebih baik dari kelompok kontrol dan dapat meningkatan kekasaran permukaan basis gigi tiruan resin akrilik polimerisasi panas.
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