• Vol 6, No 7 (2015)
  • Chemical Engineering

The Effect of Styrene Monomer in the Graft Copolymerization of Arcylonitrile onto Deproteinized Natural Rubber

Tuti Indah Sari, Asep Handaya Saputra, Setijo Bismo, Dadi R. Maspanger, Adi Cifriadi

Corresponding email: tuti.indah@ui.ac.id


Published at : 30 Dec 2015
IJtech : IJtech Vol 6, No 7 (2015)
DOI : https://doi.org/10.14716/ijtech.v6i7.1266

Cite this article as:

Sari, T.I., Saputra, A.H., Bismo, S., Maspanger, D.R., Cifriadi, A., 2015. The Effect of Styrene Monomer in the Graft Copolymerization of Arcylonitrile onto Deproteinized Natural Rubber. International Journal of Technology. Volume 6(7), pp. 1164-1173

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Tuti Indah Sari Department of Chemical Engineering, Faculty of Engineering, Universitas Indonesia, Kampus Baru UI Depok, Depok 16424, Indonesia
Asep Handaya Saputra Department of Chemical Engineering, Faculty of Engineering, Universitas Indonesia, Kampus Baru UI Depok, Depok 16424, Indonesia
Setijo Bismo Department of Chemical Engineering, Faculty of Engineering, Universitas Indonesia, Kampus Baru UI Depok, Depok 16424, Indonesia
Dadi R. Maspanger Indonesian Rubber Research Institute, Jl. Salak 16151 Bogor, Indonesia
Adi Cifriadi Indonesian Rubber Research Institute, Jl. Salak 16151 Bogor, Indonesia
Email to Corresponding Author

Abstract
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Graft copolymerization of an acrylonitrile monomer onto Deproteinized Natural Rubber (DPNR) is an important process in the modification of Natural Rubber (NR) to increase its oil resistance. However, coagulation at the beginning of the process was a problem causing a copolymerization foil to occur. The presence of a styrene monomer is therefore expected to improve the emulsion condition so that coagulation can be prevented in the early reaction step. For comparison purposes, the processes with and without styrene were investigated. The influence of the concentration of styrene as well as the ratio of the DPNR:monomer on the stabilization process were also observed. The results showed that the addition of styrene could improve the stabilization process as proven by Fourier Transform Infrared Spectroscopy (FTIR). The presence of the functional group of CºN at FTIR proved the production of the polyacrylonitrile in the mixture. The investigation showed that the concentration of styrene monomer, which led to the emulsion stability, is up to 1.5 wt% concentration of styrene at the ratio of DPNR:monomer (M) of 70:30 wt%.

Acrylonitrile, Emulsion stability, Graft copolymerization, Styrene

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