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PENGARUH MASSA GLISEROL TERHADAP TITIK LELEH PLASTIK BIODEGRADABLE DARI PATI UBI KAYU (THE GLYCEROL MASS EFFECT TOWARD MELTING POINT OF BIODEGRADABLE PLASTIC FROM WOOD CASSAVA STARCH) PRASETYO R, TRI Prasetyo
Unesa Journal of Chemistry Volume 2, Number 1, 2013
Publisher : Unesa Journal of Chemistry

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Abstract

Abstrak. Plastik biodegradable berbahan pati ubi kayu dan serat batang ubi kayu telah di buatdengan penambahan gliserol. Dalam penelitian ini bertujuan untuk mengetahui pengaruhpenambahan massa gliserol terhadap titik leleh plastik biodegradable. Pengujian titik leleh dilakukandengan menggunakan alat Melting block. Sejumlah kecil sampel digerus sehalus mungkin. Sampeldimasukkan kedalam pipa kapiler hingga serbuk sampel yang ada di pipa kapiler setinggi 0,5 cm laludi masukkan dalam melting block. Data yang dihasilkan dalam penelitian ini menunjukkan bahwatitik leleh tertinggi dihasilkan dari pati tanpa penambahan gliserol yaitu sebesar 221,670C. hal ini dikuatkan dengan pengujian FTIR pada masing-masing sampel plastik sehingga menunjukkan titikmaksimum kandungan gugus OH berada pada film plastik dengan tanpa penambahan gliserol yaitusebesar 3130 cm-1.Kata Kunci: Pati ubi Kayu, Gliserol, Titik Leleh, plastik biodegradabelAbstract. Biodegradable plastic from cassava starch and cassava stem fibers have been made withthe addition of glycerol. This study has aim to determine the effect of adding glycerol to the meltingpoint of the mass of biodegradable plastic. Tests were performed by using Melting block tool. A smallamount of samples was crushed as smooth as possible. Samples were added into the capillary tubeuntil the sample powder in the capillary tube reached 0.5 cm then included in the melting block. Thedata generated in this study showed that the highest melting point of the starch produced without theaddition of glycerol in the amount of 221.670 C. This was reinforced by FTIR testing on each plasticsample that show the point of maximum plastic content of OH groups were in plastic film without theaddition of glycerol, that was 3130 cm-1.Keywords : Wood cassava starch, glycerol, melting point,Biodegradable plastic