| dc.description.abstract | Synthesis of cardanyl methyl ether was carried out through an etherification
reaction between cardanol isolated from the shell of cashew nuts (Anacardium
occidentale L.) and methyl iodide. Cardanol isolation was carried out by adding
acetone, Ca(OH)2, 25% NH4OH, n-hexane: ethyl acetate (98:2), washing with 2.5%
NaOH, 5% HCl, distilled water and then adding anhydrous Na2SO4. The yield of
cardanol was 74.39 g (74.39% of the initial weight of CNSL) with a characteristic acid
number of 1.2863 mgKOH/g, iodine number of 215.6535 g I2/100 g, viscosity of 38.7
Cp, density of 0.8266 g/m, pH 6.14. Cardanyl methyl ether was synthesized by adding
K2CO3, acetone and methyl iodide with a reflux time of 8 hours. The parameters used
in this study were reflux time variations (7 hours, 8 hours, 9 hours) and yielded 7,646
g; 12,084 g; 5,276 g cardanyl methyl ether. The obtained Cardanol and Cardanyl
methyl ether were analyzed by FT-IR and GC-MS spectrophotometer. FT-IR analysis
showed the formation of cardanol and cardanyl methyl ether which was characterized
by the difference in the peaks of the stretching vibrations of the C-O group and the
stretching vibrations of the C-O-C groups at wave numbers 1300-1000 cm-1 whereas
in the isolated CNSL cardanol was characterized by the presence of stretching
vibrations of the C-O group in wave number 1162.9 cm-1
, whereas in cardanyl methyl
ether it is characterized by the presence of stretching vibrations of the C-O group at
wave numbers 1162.9-1259.8 cm-1
and stretching vibrations of the C-O-C group at
wave numbers 1043.6-1148.0 cm-1
. GC-MS analysis showed that the proportion of
cardanol obtained was 63.28%, and the proportion of cardanyl methyl ether with
variations in reflux time (7 hours, 8 hours, 9 hours) was obtained at 30.18%, 30.29%
and 22.09 %. The results of the analysis showed that the maximum proportion of
cardanyl methyl ether was obtained under the molar reaction conditions of cardanol:
methyl iodide (1:3), K2CO3 17.3 g, acetone 50 mL, with reflux time of 8 hours | en_US |
