E. Eddiyanto, B. Nainggolan, M. Sipayung
Modification of natural rubber by graft copolymerization with reactive monomer, maleate anhydride (MA) is of a technique that aims to change its chemical properties of the polymer. In this research, the graft copolymerization process was conducted in various amount of MA, type and amount of peroxides in FTIR test results showed the appearance of peak absorption at the wave number of 1710-cm cluster C=O carbonyl from MA that is graphed in natural rubber. Based on the comparison of ir analysis of peroxide concentration used i.e. (0.01, 0.05 and 0.1) molar ratio obtained the largest carbonyl index at DCP concentration of 0.05 mr similarly, the comparison of IR analysis results of MA concentration variations (3, 6, 9, 12) phr shows the largest carbonyl index that appears in the C=O absorption area is in the KA-g-MA sample with a MA variation of 12 phr with Carbonyl index = 45.81. The degree of MA grafting on natural rubber structures increased with the increasingly of MA concentration. The DSC describes that the presence of MA in the solution mixture does not change the shape of the crystallinity and melting point of each solution blend significantly. © 2022 American Institute of Physics Inc.. All rights reserved.
Chemistry Departement, Faculty of Mathematics and Natural Sciences, Universitas Negeri Medan, Jl. W. Iskandar Psr V Medan Estate , Sumatera Utara, 20371, Indonesia
