PEMANFAATAN MINYAK BIJI RAMI (LINSEED OIL) DAN GLISEROL BY-PRODUCT BIODIESEL UNTUK PEMBUATAN VERNIS ALAMI
Abstract: Varnish is coating
material that is produced by using polymer. Actually natural varnish is produced by manufacturing
natural polymer like gondorukem. The research is to study about optimizing of reactant composition as the ratio of OH/COOH
and operation temperature in the process of making natural varnish from
gondorukem, linseed oil and glycerol by-product biodiesel using the alcoholysis
method.
The reaction is done in the reactor using agitator. The reaction consists
of two steps, 1). the forming of monoglyceride, 2). the forming of varnish.
Both steps of reaction is done at the same temperature (200oC, 220oC, 240oC and
260oC). Reactant ratio is used as equivalent ratio OH/COOH: 1,1; 1,2; and 1,3.
We analyze free glycerol concentration in the first step reaction and acid value in the second step reaction. The
best result is obtained in ratio 1,2 and operation temperature 260oC.
Key word: natural varnish,
alcoholysis, equivalent ratio OH/COOH, linseed oil, glycerol by-product
biodiesel
Penulis: Sri Sutanti, Sari
Purnavita, Herman Yoseph Sriyana
Kode Jurnal: jpkimiadd130358
