Kurniawan, Moch Ardhi (2019) Pengaruh Penambahan Kalsium Karbonat (CaCO3) Terhadap Karakteristik Bioplastik Pati Biji Nangka Dengan Pemlastis Gliserol. Sarjana thesis, Universitas Brawijaya.
Abstract
Bioplastik merupakan plastik ramah lingkungan yang mudah terdegradasi oleh mikroorganisme. Pembuatan bioplastik banyak menggunakan pemlastis dan pati sebagai bahan utama. Bij nangka yang jumlahnya melimpah, tetapi hanya dibuang sebagai limbah dapat diekstrak untuk pembuatan pati. Penelitian ini bertujuan untuk mengetahui pengaruh penambahan Kalsium Karbonat (CaCO3) sebagai penguat terhadap karakteristik bioplastik pati biji nangka dengan pemlastis gliserol. Bioplastik dibuat dengan metode cetak tuang dengan pati seberat 5 gram dan variasi penambahan CaCO3 sebesar 0%, 5%, 6%, 7%, 8%, 9%, 10%, dan 11% dari massa pati. Hasil uji kuat tarik tertinggi didapatkan dari penambahan CaCO3 6% sebesar 30,58 MPa. Nilai elongasi tertinggi didapatkan dari penambahan CaCO3 11% sebesar 20,84%. Pada pengujian ketahanan air, semakin besar penambahan CaCO3 semakin besar juga penyerapan airnya. Penambahan CaCO3 11% memiliki penyerapan air paling tinggi sebesar 49,948%. Penambahan CaCO3 yang semakin besar mempercepat proses degradasi sampel bioplastik. Bioplastik dengan kandungan CaCO3 11% memiliki persen kehilangan massa paling besar yaitu 38,64% dengan waktu penyimpanan 28 hari.
English Abstract
Bioplastics are environmentally friendly plastics that are easily degraded by microorganisms. Many bioplastics use plasticizers and starch as the main ingredients. Jackfruit seeds are abundant, but are only discarded as waste can be extracted to make starch. This study aims to determine the effect of adding Calcium Carbonate (CaCO3) as a reinforcement to the characteristics of bioplastics of jackfruit seed starch with glycerol plasticizer. Bioplastics are made with cast molding methods with 5 grams of starch and variations in the addition of CaCO3 are 0%, 5%, 6%, 7%, 8%, 9%, 10%, and 11% of the starch mass. The highest tensile strength test results obtained from the addition of 6% CaCO3 of 30.58 MPa. The highest elongation value is obtained from the addition of 11% CaCO3 by 20.84%. In testing water resistance, the greater the addition of CaCO3 the greater the absorption of water. Addition of CaCO3 11% has the highest water absorption of 49.948%. The increasing addition of CaCO3 accelerates the degradation process of bioplastic samples. Bioplastics with a CaCO3 content of 11% have the highest percentage of mass loss of 38.64% with a storage time of 28 days.
Other obstract
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| Item Type: | Thesis (Sarjana) |
|---|---|
| Identification Number: | SKR/MIPA/2019/134/051910837 |
| Uncontrolled Keywords: | Bioplastik, kalsium karbonat (CaCO3), pati biji nangka, gliserol, Bioplastics, calcium carbonate (CaCO3), jackfruit seeds starch, glycerol |
| Subjects: | 500 Natural sciences and mathematics > 546 Inorganic chemistry > 546.6 Groups 8, 9 ,10, 11, 12, 13, 14 > 546.68 Group 14 > 546.681 Carbon |
| Divisions: | Fakultas Matematika dan Ilmu Pengetahuan Alam > Fisika |
| Depositing User: | Budi Wahyono Wahyono |
| Date Deposited: | 05 Aug 2020 08:02 |
| Last Modified: | 05 Aug 2020 08:02 |
| URI: | http://repository.ub.ac.id/id/eprint/178507 |
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