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All Journal Bio-Inoved : Jurnal Biologi-Inovasi Pendidikan JURNAL TEKNOLOGI TECHNOSCIENTIA
Helda Rahmawati
Tadris Kimia Program, Faculty of Tarbiyan and Teacher's Sciences, UIN Antasari Banjarmasin
Earth & Planetary Sciences Education Engineering

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SINTESIS KARBOKSIMETIL KITOSAN TERHADAP PENGARUH KONSENTRASI NATRIUM HIDROKSIA DAN RASIO KITOSAN DENGAN ASAM MONOKLORO ASETAT Rahmawati, Helda; Iskandar, Dodi
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 6 No 2 Februari 2014
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34151/technoscientia.v6i2.561

Abstract

This study aims to determine the effect of NaOH concentration and the ratio of monocloro acetic acid with chitosan used in the synthesis process to the degree of substitution and solubility in water. Preparation of carboxymethyl chitosan (CMCts) was carried out by various concentration of NaOH and ratio of monochloro acetic acid with chitosan. The concentration of NaOH used in the alkalination process were 10, 20, 30, 40, and 50% (w/v). The ratio of chitosan: monochloro acetic acid used for etherification were 1:0,5; 1:1; 1:1,5; and 1:2 (w/w). Etherification was carried out at a temperature of 60°C for 2 hours. The results showed that the NaOH concentration of 10-30% (w/v) increased the substitution degree and solubility of produced CMCts. But at concentrations above 30% (w/v) the substitution degree and solubility were decreased. The ratio of chitosan : monochloro acetic acid also affect to substitution degree and the solubility of synthesized CMCts. The higher amount of monochloro acetic acid added to chitosan, the higher is substitution degree and the solubility of carboxymethyl chitosan synthesized in water. The best result was obtained when the ratio of chitosan : monochloro acetic acid were 1:2 (w/w). Within this ratio a 92.05% of yield was resulted with a solubility of 28.05 g/L and a substitution degree of 0.72.
Development of introductory teaching materials for the collaborative science laboratory of culture, Islam and technology Suryandari Suryandari; Meyninda Destiara; Helda Rahmawati
BIO-INOVED : Jurnal Biologi-Inovasi Pendidikan Vol 4, No 2 (2022): June 2022
Publisher : Master Program of Biology Education, Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1248.88 KB) | DOI: 10.20527/bino.v4i2.12972

Abstract

The development of introductory teaching materials for the collaborative science of culture, Islam, and technology is research that produces innovative teaching materials as references for introductory laboratory courses and similar subjects. This study aims to develop teaching materials and validate products by material experts and media experts. The development of teaching materials is carried out in stages: (1) enrichment of teaching materials by laboratory introductory materials in the curriculum of biology, physics, and chemistry study programs, (2) collecting local potential data that can be included and explained in teaching materials according to laboratory introductory materials, (3) explore information related to Islam-science according to the phenomena presented, (4) innovate material content by presenting 3D augmented reality technology which has explained the use and installation of supporting applications, (5) validate teaching materials on material and media aspects, (6) implement teaching materials in the introductory laboratory learning process and or laboratory management in physics, chemistry and biology study programs. This development research stage is in line with the ADDIE model development research. The validation results obtained a percentage of 79% for material experts and 88% for media experts who both belong to the "strongly agree" category to be suitable for use by revising.Abstrak Pengembangan bahan ajar pengantar laboratorium sains kolaborasi budaya, islam dan teknologi merupakan penelitian yang menghasilkan produk bahan ajar inovatif sebagai referensi mata kuliah pengantar laboratorium dan mata kuliah sejenisnya. Penelitian ini bertujuan untuk mengembangkan bahan ajar dan menvalidaasi produk oleh ahli materi dan ahli media. Pengembangan bahan ajar dilakukan dengan tahapan: (1) pengayaan materi ajar sesuai dengan materi pengantar laboratorium pada kurikulum program studi tadris biologi, fisika dan kimia, (2) mengumpulkan data potensi local yang dapat dicantumkan dan dijelaskan pada bahan ajar menyesuaikan materi pengantar laboratorium, (3) menggali infomasi berkenaan dengan islam-sains sesuai pada fenomena yang disajikan, (4) melakukan inovasi konten materi dengan menyajikan tenologi augmentedr reality 3D yang telah dijelaskan penggunaan dan pemasangan aplikasi pendukung, (5) melakukan validasi bahan ajar pada aspek materi dan media, (6) mengimplementasikan bahan ajar dalam proses pembelajaran pengantar laboratorium dan atau manajemen laboratorium pada program studi tadris fisika, kimia dan biologi. Tahapan penelitian pengembangan ini selaras dengan penelitian pengembangan model ADDIE. Hasil validasi diperoleh persentase 79% pada ahli materi dan 88% pada ahli media yang sama-sama termasuk pada ketegori “sangat setuju” untuk layak digunakan dengan melakukan revisi.
Co-Authors Dodi Iskandar, Dodi Meyninda Destiara Suryandari Suryandari