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All Journal Hydrogen: Jurnal Kependidikan Kimia TROPICAL BIOSCIENCE: Journal of Biological Science
Roza Ruspita
Universitas Islam Negeri Sultan Maulana Hasanuddin Banten
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry Education Immunology & microbiology

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Preparasi Matriks Alam Sekresi Kutu Lak Dengan Asam Adipat Pada Biokomposit Serat Rami Hestya Arinta Ayu Prianto; Roza Ruspita; Eli Rohaeti
Hydrogen: Jurnal Kependidikan Kimia Vol 7, No 2 (2019): Hydrogen: Jurnal Kependidikan Kimia
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (602.341 KB) | DOI: 10.33394/hjkk.v7i2.1759

Abstract

In this research, preparation of natural matrix from modified flea secretion (SKL) by the addition of adipic acid as matrix in biocomposites of ramie fiber have been carried out. This research was initiated by dissolving the chunks of flea secretion using ethanol with ratio 1:2 and heated at temperature 50oC. Flea secretion has modified by the addition of adipic acid in various concentration 5%, 10%, 15%, 20%, and 25%. Viscometry technique with viscometer ostwald was used for characterizing intrinsic viscosityof natural matrix. The optimum value of intrinsic viscosity were reached at concentration 5% of adipic acid that has 77,08 mg/l viscosity. Biocomposites were made by mixing ramie fibers and natural matrix SKL which have been modified by the addition of adipic acid with optimum concentration at 60:40ratio of fibers: matrix. Biocomposites were evaluated for mechanical properties with ASTM D638 type IV standard. Biocomposite sampel was formed specimens and tested with tensile tester. Biocomposite from ramie fibers and natural matrix SKL modified by adipic acid has a tensile strength 15,14 MPa and elastic modulus was 1519,15 MPa.
Analisis Perbandingan Morfologi Mimosa pudica L. dan Mimosa pigra L. di Desa Susukan, Kabupaten Serang, Banten SEPTIANI SEPTIANI; LILI HALIMAH; ROZA RUSPITA; LAKSMI PUSPITASARI
Tropical Bioscience: Journal of Biological Science Vol. 1 No. 2 (2021): Desember 2021
Publisher : Program Studi Biologi - Fakultas Sains - UIN Sultan Maulana Hasanuddin Banten

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32678/tropicalbiosci.v1i2.5317

Abstract

Putri malu merupakan tumbuhan liar yang banyak ditemukan di daerah lembap dan tropis. Di Desa Susukan, Kecamatan Tirtayasa, Kabupaten Serang, Banten terdapat dua jenis tanaman putri malu, yaitu Mimosa pigra L. dan Mimosa pudica L. Mimosa pigra belum dikenal secara umum. Penelitian ini bertujuan untuk membandingkan karakter morfologi M. pigra dan M. pudica. Metode penelitian yang digunakan adalah purposive sampling. Data yang diperoleh dianalisis secara deskriptif kualitatif. Hasil penelitian menunjukkan bahwa pada M. pigra tidak ditemukan buah. Batang dari kedua spesies memiliki penampang melintang yang berbentuk bulat, trikoma, dan duri sejati, tetapi warna, arah tumbuh, dan tinggi dari keduanya berbeda. Pada M. pigra, daun berwarna hijau, sedangkan pada M. pudica sedikit berwarna merah di bagian pinggir daun. Kecepatan mengatup daun M. pigra sekitar 03:62 detik, sedangkan pada M. pudica 02:13 detik. Pada M. pigra, bunga tumbuh di ketiak batang, sedangkan pada M. pudica tumbuh di ketiak daun. Kedua spesies memiliki bunga dengan warna merah muda. Namun pada M. pudica, bunga berwarna putih dan layu saat matahari terbenam.
Co-Authors Eli Rohaeti Hestya Arinta Ayu Prianto Laksmi Puspitasari LILI HALIMAH SEPTIANI SEPTIANI