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Abstrak :
Untuk mendapatkan bahan yang cocok, dafam upaya mengaiasi terjadinya set-off pada hasil cetak intaglio, diperoleh bahan additive yang dibuai dari campuran bahan wax, yaitu wax poliethilen (wax PE), wax politetrafluorethilen ( wax PTFF ) dan wax carnauba. Wax PE dan wax PTFE yang digunakan sudah berupa campuran yang disebut dengan wax polifluo. Dalam proses pembuatan - nya wax polifluo di dicampur dengan wax carnauba dengan perbandingan 97 % dan 3 %. Selanjutnya campuran wax ini ditambah dengan solvent dengan perbandingan 70 % wax dan 30 % solvent, kemudian dipanaskan sambil diaduk sampai lemperatur 120"C, kemudian didinginkan perlahan-lahan sampai temperatur kamar. Bahan additive yang dibuai ini disebut anti set-off. Dalam proses cetak intaglio, tinta yang digunakan ditambah dengan bahan additive (anti set-off) ini, sebanyak 4 %, agar hasil cetak intaglio yang didapal tidak mengalami set-off.

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To obtain the suitable material for solving set-off problem in intaglio printing, it was obtained the additive which made trom mixed waxs are polyethylene wax ( PE wax ), poiyielrafluorcthylene wax ( P'f IE wax ) and canmuba wax. PF wax and PTFE wax which using have already mixed, which called polyfluo wax. In it's production, polyfluo wax was mixed with carnauba wax in 97 % compared with 3 %, this mixed was added with solvent in 70 % wax compared with 3 % of solvent and stir up which it's heating in 120°C, then cooling off until reach the room temperature, this additive called anti set-off. In proses of intaglio printing, the ink which used was added by 4 % of this additive to obtain the result of intaglio printing without set-off problem.

Abstrak :
The effect of carnauba wax consentration to pharmacotechnical characteristics on the granules and tablets that made by hot melt granulation method have been studied. Formula I? V with composition : 10, 20, 30, 40, and 50% w/w carnauba wax, propranolol hydrochloride 60 mg/tablet and lactose to the 340 mg was mixed and melted, and than sieved to the mesh 16 siever. The granules were evaluated and lubricated by 1% magnesium stearat and 2% talcum. Then it were compressed into tablet which each weight was 350 mg and the tablets were evaluated. The results showed that hot melt granulatin form granules and tablets that acceptable pharmacotechnical properties.

Abstrak :
Pada penelitian ini, modifikasi permukaan bunga mawar (Rosa x odorata) menjadi superhidrofobik telah berhasil dilakukan dengan metode coating menggunakan material coating Polydimethylsiloxane/Carnauba wax. Polydimethylsiloxane (PDMS) digunakan untuk menurunkan energi permukaan pada bunga mawar dan carnauba wax digunakan untuk memberikan kekasaran permukaan pada bunga mawar. Hasil modifikasi permukaan bunga mawar dengan proses coating dikarakterisasi menggunakan Spektroskopi ATR-FTIR, SEM-EDX, dan Spektrofotometer UV-Vis. Hasil karakterisasi berdasarkan spektra ATR-FTIR menunjukkan puncak spesifik PDMS pada bilangan gelombang 1017,08 cm-1 dan 1095,26 cm-1 yang mengindikasikan ikatan Si-O-Si. Pengujian sifat superhidrofobik dilakukan dengan pengukuran sudut kontak air pada permukaan bunga mawar yang menghasilkan sudut kontak air tertinggi sebesar 165.4o pada konsentrasi optimum 1% PDMS dengan 9 kali pelapisan. Uji stabilitas fisik menunjukkan bahwa bunga mawar yang telah dimodifikasi permukaannya memiliki kestabilan yang lebih baik dibandingkan dengan bunga mawar yang belum dimodifikasi permukaannya.

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In this research, the surface modification of rose flower (Rosa x odorata) to be superhydrophobic was successfully carried out through the coating method using a Polydimethylsiloxane/Carnauba wax coating material. Polydimethylsiloxane (PDMS) used as a material to lower surface energy in roses and carnauba wax used to provide surface roughness to roses. The results of surface modification of roses through the coating process and uncoated roses were characterized using FTIR Spectroscopy, SEM-EDX, and UV-Vis Spectrophotometer. The results of characterization based on ATR-FTIR spectra show PDMS specific peak at 1017,08 cm-1 and 1095,26 cm-1 indicating Si-O-Si bond. Superhydrophobicity was determined by measuring water contact angle on the surface of the rose flower. The highest contact angle was reached by coating the surface 9 times with 1% PDMS, which was determined as the optimum concentration. The physical stability test of roses showed that the surface of the modified roses was more stable than the roses that was not modified