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All Journal PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL)
Amalia Puspita Rengganis
Program Studi Magister Pendidikan Fisika Pascasarjana Universitas Negeri Semarang Jl. Kelud Utara III, Kota Semarang, 50237
Electrical & Electronics Engineering Energy Physics Other

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FABRIKASI TINTA SPIDOL WHITEBOARD BERBAHAN DASAR PIGMEN ORGANIK DARI ENDAPAN MINUMAN KOPI Amalia Puspita Rengganis; Sulhadi Sulhadi; Teguh Darsono; Dhamar Putra Fajar
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Vol 6 (2017): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2017
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (650.941 KB) | DOI: 10.21009/03.SNF2017.02.MPS.17

Abstract

The ground of coffee drink does not have a high use value. An attempt has been made to utilize the coffee drink as an organic pigment for the whiteboard marker ink. Making organic pigment was done by reducing the particle size of coffee beverage using ball milling and screen mesh. The process of making the ink is by mixing the ingredients of ink such as Arabic gum, aquades, alcohol, and PEG on organic pigments. The process of making the ink is done by variation of arabic gum binder composition from 1 gram up to 3.5 grams. Based on the test result, the addition of arabic gum mass will increase the viscosity and level of ink adhesion. While in the transmittance test, the addition of arabic gum mass will decrease the intensity value of light transmitted by ink Keywords: Ink, Organic Pigment, Ground of Coffee.
Co-Authors Dhamar Putra Fajar Sulhadi Sulhadi Teguh Darsono