Nanang Rahmat Wijaya, Tamrin, Eddiyanto, Joddy Arya Laksmono
The purpose of this study was to improve the performance of asphalts as an adhesive in a mixture of asphaltrubber by using compatibilizer material, graft copolymer natural rubber with glycidyl methacrylate (GMA) (NR-g-GMA). It was carried out the grafting process using Hake's internal mixer through a melting process in the presence of dicumyl peroxide (DCP). The grafting degree of GMA on natural rubber was determined through acid-base titration and FTIR analysis. The next process was mixed amount of asphalts (100 phr) and NR-g-GMA (5 phr) in an external mixer at 180oC, 600 rpm, for 90 minutes. The mixed asphalts-rubber was characterized its physical properties (penetration, softening point and ductility) and rheology test to determine its resistance of modified asphalts at high temperatures and its crack resistance at low temperatures. FTIR analysis of NR-GMA showed the carbonyl functional group C=O at a wave number of 1730 cm-1 indicating the presence of GMA on NR. The penetration, softening point, and ductility test met the bitumen standards. The rheological test showed that the addition of grafted natural rubber with GMA was able to increase the rutting resistance at high temperature and the crack resistance at high temperature. © 2022 American Institute of Physics Inc.. All rights reserved.
Department of Chemistry, Faculty of Mathematic and Natural Science, Universitas Sumatera Utara, Jln. Bioteknologi Kampus USU, Medan, 20215, Indonesia; Department of Chemistry, Faculty of Mathematic and Natural Science, State University of Medan, Jl. Willem Iskandar, Pasar V, Medan, 20221, Indonesia; Research Center for Chemistry - Lipi, Kawasan PUSPIPTEK Serpong, Tangerang Selatan, Banten, 15314, Indonesia
