TY - JOUR AU - Herlina, Idra AU - Anggraini, Yulistia AU - Safitra, Edwin Rizki PY - 2022/04/10 TI - Sintesis dan karakterisasi komposit polipropilena/silika berbasis abu ampas tebu JF - Journal of Science and Applicative Technology; Vol 6 No 1 (2022): Journal of Science and Applicative Technology June ChapterDO - 10.35472/jsat.v6i1.766 KW - N2 - Polypropylene/sugarcane bagasse silica (PP/SiO 2 ) composites have been synthesized. The sol gel method with 1 M NaOH was used to synthesize silica from bagasse ash. The results showed that the silica yield was 52.8%. The resulting silica was blended with polypropylene with a mass ratio variation of 1:5, 1:10, 1:15, 1:20, and 1:25 to obtain PP/SiO 2 composites. Composites in variations of 1:5 and 1:10 produce fragile plastic, whereas composites in variations 1:15, 1:20, and 1:25 produce strong and homogeneous plastic. The water resistance test showed that PP/SiO2 with variations of 1:15, 1:20,and 1:25 had good water resistance (> 94%), whereas variations of 1:5 and 1:10, the resistance to water dropped to 80-87%. FT-IR was used to characterize polypropylene, silica synthesized from bagasse ash, and PP/SiO 2 composites (1:25) to observe functional group changes. FT-IR analysis showed that silica was successfully synthesized from bagasse ash. This is indicated by a band that widened at a wavenumber of 3400-3600 cm -1 , which is characteristic of the O-H strain on water. This band is confirmed by a band with a wavenumber of 1660 cm -1 which is a bend in the O-H in a water molecule. Other silica characteristics can be seen in bands with wavenumbers of 1075 cm -1 and 950 cm -1 , which are strains of Si-O, and bands with a wavenumber of 460 cm -1 , which is a bend of Si-O. The spectra of polypropylene and PP/SiO 2 were also similar. The similarity between the polypropylene and PP/SiO 2 spectra indicates that SiO 2 spreads homogeneously in polypropylene. UR - https://journal.itera.ac.id/index.php/jsat/article/view/766