<![CDATA[This research aims to optimize the properties of biofiber made from sisal fiber through modification with stearic acid. Sisal fiber is known to have high potential as a natural raw material, but its mechanical properties still need to be improved for wider industrial applications. The modification process is carried out by soaking the sisal fiber in a stearic acid solution with varying concentrations. Laboratory tests were carried out to evaluate the effectiveness of modifying the physical properties of sisal biofiber in the form of 1 cm short fiber fibers and 200 mesh sisal powder to determine the most effective modification between the two fiber sizes. Based on the results obtained, the highest cellulose, namely 64.7%, was obtained from the results of impregnation of the fiber. The lignin content decreased in impregnated sisal fiber to 9.2% from 12.48% without treatment. The results of NDF which produce cellulose and lignin levels are strengthened by SEM results on 4% sisal fiber. These results show that the sisal fiber without stearic acid treatment shows a greater distribution of lignin compared to the sisal fiber treated with 4% stearic acid.]]>
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