APLIKASI EKSTRAK DAUN JATI (Tectona grandis) SEBAGAI FILM KACA NON PERMANEN

Deska Lismawenning Puspitarum; Agus Yulianto; - Sulhadi

Deska Lismawenning Puspitarum Fisika, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Negeri Semarang
Agus Yulianto Fisika, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Negeri Semarang
- Sulhadi Fisika, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Negeri Semarang

Keywords: Teak leaves, Carotenoid

Abstract

Utilization of natural resources of teak leaves had been done succesfully have carotenoids to naturally dye coating on the glass using spray technique, topical, and bags. Dye solution is mixed with teak leaf extract Polivynil Alcohol (PVA), then homogenizing or the resulting mixture by filtered manually with filter T100. Characterization with CCD microscope MS-804 is used to observed the film coating on the glass surface. Characterization results indicate that the solution of teak leaf extract solution and PVA could be homogenized. Characterization using luxmeter showed that composition with the same PVA concentration 5 grams and composition of different teak leaf extract were 25 grams, 50 grams, 75 grams, 100 grams, 125 grams, 150 grams, 175 grams, and 200 grams of a spray technique obtained light intensity of 2 lux, 2 lux, 2 lux, 2 lux, 1.5 lux, 1.5 lux, 2 lux, and 1.5 lux. Light intensity of techniques topical and immersion results are not much different with spray techniques. It is showed that the more the composition of the extract and the lower the value of the intensity. Characterization of the adhesive layer of dye on the glass with the number concentration of PVA coating was made stronger. Dye layer on the glass could be removed with ethanol if expected to replace with other natural dyes

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