Effect of Hybrid Filler Oil Palm Boiler Ash – Bentonite on Thermal Characteristics of Natural Rubber Compounds

Abstract

The concept of hybrid fillers by combining several types of fillers, especially with the inclusion of nanoscale filler particles, has attracted the attention of many researchers. The addition of filler to the rubber compound can improve the thermal properties. This study aims to analyze the effect of filler hybrid oil palm boiler ash (OPBA) –bentonite on thermal characteristics natural rubber compounds. The coprecipitation method was used in preparing OPBA, and CTAB surfactant was added in bentonite preparation. Meanwhile, compound preparation was carried out by inserting SIR 20 into an open mill machine. Characterization was done by XRD, FTIR, SEM, mechanical and thermal properties. In general, the compounds did not show a change in peak position. Peaks of 2Ө = 44o and 64o. Bonds at 2849–2917 cm-1 were associated with asymmetric methyl stretching vibrations. The peaks of 1000–650 cm-1 showed C = C-H bending. The compound morphology shows torn lines with branching. Furthermore, in gen-eral, the mechanical properties of the compound increased with the addition of OPBA/bentonite filler. Differential Scanning Calorimetry compound data showed an increase in the number of peaks in the sample with 10 wt% filler.