POTENSI PENGGUNAAN KARET ALAM TERMOPLASTIK (COPOLYMER NR-VYNIL MONOMER) UNTUK ALTERNATIF MODIFIER ASPAL KARET: I. PEMBUATAN KARET ALAM TERMOPLASTIK DARI KARET ALAM DAN MONOMER VINIL SECARA KOPOLIMERISASI CANGKOK EMULSI

Authors

  • Santi Puspitasari Indonesian Rubber Research Institute
  • Emil Budianto
  • Dadi Rusadi Maspanger

DOI:

https://doi.org/10.22302/ppk.jpk.v39i2.787

Keywords:

aspal, emulsi, karet alam, kopolimerisasi cangkok, termoplastik

Abstract

Aspal karet merupakan salah satu bentuk aspal modifikasi polimer. Umumnya, aspal modifikasi polimer dibuat dengan mencampurkan modifier termoplastik elastomer sintetik jenis stirena butadiene stirena (SBS) ke dalam aspal. SBS berpotensi digantikan oleh karet alam termoplastik (Thermoplastic Natural Rubber, TPNR). Di Indonesia, pengembangan aspal karet skala lapangan telah diinisasi sejak 2016 namun belum menggunakan TPNR. Riset ini bertujuan untuk mempelajari karakteristik TPNR yang dibuat melalui kopolimerisasi cangkok emulsi karet alam protein rendah (DPNR) dengan kombinasi monomer vinil (MV) stirena (ST) dan metil metakrilat (MMA). Komposisi DPNR/MV diatur pada 60/40 bagian, sedangkan rasio kombinasi MV ditetapkan sebesar 1:2; 1:1; 2:1. Urutan penambahan MV diatur MMA dahulu diikuti ST, dan sebaliknya. Hasil eksperimen menunjukkan bahwa TPNR atau kopolimer cangkok yang disintesis dari DPNR dengan penambahan ST diikuti MMA pada rasio 2:1 (kopoli (DPNR/ST-MMA 2:1)) memiliki sifat yang paling mendekati SBS sehingga berpotensi digunakan sebagai alternatif modifier dalam pembuatan aspal karet.

References

Al-Ani, T. M. A. (2009). Modification of asphalt mixture performance by rubber silicone additive. Anbar Journal of Engineering Science, 2(1), 71-81.

Arayapranee, W., Prasassarakich, P. & Rempel, G. L. (2002). Synthesis of graft copolymers from natural rubber using cumene hydroperoxide redox initiator. J. Appl. Polym. Sci, 83, 2993-3001.

Arayapranee, W., Prasassarakich, P., & Rempel, G. L. (2003). Process variables and their effects on grafting reactions of styrene and methyl methacrylate onto natural rubber. Journal of Applied Polymer Science, 89, 63 – 74.

Arayapranee, W. & Rempel, G. L. (2008). Morphology and mechanical properties of natural rubber and styrene-grafted natural rubber latex compounds. J. Appl. Polym. Sci, 109, 1395 – 1402.

Behnood, A. & Gharehveran, M. M. (2019). Morphology, rheology, and physical properties of polymer-modified asphalt binders. European Polymer Journal, 112, 766-791.

Charmondusit, K., Kiatkamjornwong, S., & Prasessarakich, P. (1998). Grafting of methyl methacrylate and styrene onto natural rubber. J. Sci. Chula. Univ, 23 (2), 167 – 181.

Che Man, S. H., Hashim, A. S., & Akil, H. Md. (2008). Properties of styrene-methyl methacrylate grafted DPNR latex at different monomer concentration. J. Appl. Polym. Sci, 109, 9 – 15.

Chen, M., Geng, J., Xia, C., He, L., & Liu, Z. (2021). A review of phase structure of SBS modified asphalt: Affecting factors, analytical methods, phase models and improvements. Construction and Building Materials, 294, 123610.

Dai, S., Li., S., Xu, G., & Chen, C. (2020). Direct synthesis of polar functionalized polyethylene thermoplastic elastomer. Macromolecules, 53(7), 2539-2546.

Faibunchan, P., Pichaiyut, S., Chueangchayaphan, W., Kummerlowe, C., Venneman, N., & Nakason, C. (2019). Influence type of natural rubber on properties of green biodegradable thermoplastic natural rubber based on poly(butylene succinate). Polymer for Advanced Technologies, 30(4), 1010-1026.

Kalkornsurapranee, E., Koedthip, D., Songtipya, P., Prodpran, T., John, J., Nakaramontri, Y., & Songtipya, L. (2020). Influence of modified natural rubber as compatibilizer o the properties of flexible food contact materials based on NR/PBAT blends. Material and Design, 196, 109143.

Lim, J. W., Hassan, A. & Bakar, A. A. (2002). Effect of methyl – methacrylate – grafted – natural rubber – 49 on mechanical properties of filled calcium carbonate unplasticised PVC. Eprints.utm.my diakses tanggal 8 September 2014.

Malithong, S., & Thongpin, C. (2010). The modification of asphalt emulsion using pre-vulcanized natural rubber rubber latex for highway application. Advanced Material Research, 93-94, 639-642

Mashaan, N.S., Ali, A.H., Koting, S., & Karim, M.R. (2013). Performance evaluation of crumb rubber modified stone mastic asphalt pavement in Malaysia. Advances in Material Science and Engineering, 2013, p.8

Matsusaka, N., Suzuki, T., & Okubo, M. (2013). Effect of partitioning of monomer and emulsifier in aqueous media on particle formation in emulsion homopolimerization of hydrophobic and hydrophilic monomers with a nonionic emulsifier. Polymer Journal, 45, 153-159.

Mohod, M. V., & Kadam, K. N. (2016). A comparative study on rigid and flexible pavement: A review. IOSR Journal of Mechanical and Civil Engineering, 13(3), 84-88.

Nakason, C., Kaesaman, A., & Yimwan, N. (2003). Preparation of graft copolymers from deproteinized and high ammonia concentrated natural rubber latices with methyl methacrylate. Journal of Applied Polymer Science, 87, 68 – 75.

Nampitch, T., & Buakaew, P. (2006). The effect of curing parameters on the mechanical properties of styrene-NR elastomers containing natural rubber graft polystyrene. Kasetsart. J. (Nat. Sci), 40, 7 – 16.

Shafii, M.A., Rahman, M.Y.A., & Ahmad, J. (2011). Polymer modified asphalt emulsion. International Journal of Civil & Environmental Engineering, 11(6), 43-49.

Shaffie, M., Ahmad, J., Arshad, A.K., Kamarun, D., & Kamaruddin, F. (2015). Stripping performance and volumetric properties evaluation of hot mix asphalt (HMA) mix design using natural rubber latex polymer modified binder (NRMB). Proceedings of the International Civil and Infrastructure Engineering 2014 (p. 873-884). Singapore: Springer

Shanks, R., & Kong, I. (2012). Thermoplastic elastomer. Thermoplastic Elastomer, Prof. Adel El-Sonbati (Ed.). www.interchopen.com diakses tanggal 16 Januari 2014

Sood, A. (2004). Particle size distribution control in emulsion polymerization. Journal of Applied Polymer Science, 92, 2884-2902.

Xavier, T., Samuel, J. & Kurian, T. (2003). Thermoplastic ionomers based on “styrene grafted natural rubber”. International Journal of Polymeric Materials, 52, 251 – 264

Yamamoto, K., Sawada, T. & Kawahara, S. (2007). Graft copolymerization of acrylonitrile onto surface of natural rubber particles using deproteinized natural rubber latex. Kobunshi Ronbunshu, 64(3), 155 – 160

Ying, G., & Rongji, C. (2010). Interaction theory of asphalt and rubber. Journal of Wuhan University of Technology-Mater. Sci. Ed, 25(5), 853-855

Downloads

Published

2022-06-27

Issue

Section

Original Research Article