Abstract:
Rubber plants come from Latin, namely Havea brasiliensis from Brazil.
This plant is the main source of the world's natural rubber plants. In order for
natural rubber to have a high economic value, natural rubber is modified. Cyclic
natural rubber is one form of natural rubber modified by heating using an acid
catalyst. Which aims to be able to change the characteristics or properties of
natural rubber better. This research is a laboratory experiment to produce new
material. Then determine the amount of Maleic Anhydride grafted on cyclic
natural rubber. There is addition of Maleic Anhydride with various
concentrations: 2, 4, 8, 16 phr. The degree of grafting is determined by the
titration method using NaOH. In addition to increasing the degree of grafting,
comonomer divinil benzen is added with variations: 0.5, 1 and 2 mol ratios. From
the results of this study, with the addition of Divinil Benzen the degree of
transplantation had a higher increase compared to without using a comonomer.
