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All Journal Jurnal Tanaman Industri dan Penyegar Jurnal Penelitian Karet
Emil Budianto
Departemen Kimia, Fakultas MIPA, Universitas Indonesia
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Education Industrial & Manufacturing Engineering

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Pengaruh Rasio Karet Alam Terdeproteinisasi dengan Monomer Vinil terhadap Karakteristik Karet Alam Termoplastik Santi Puspitasari; Emil Budianto; Dadi Rusadi Maspanger
Jurnal Tanaman Industri dan Penyegar Vol 3, No 1 (2016): Jurnal Tanaman Industri dan Penyegar
Publisher : Pusat Penelitian dan Pengembangan Perkebunan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jtidp.v3n1.2016.p1-10

Abstract

Chemical modification of natural rubber latex by emulsion graft copolymerization with thermoplastic monomer produces thermoplastic natural rubber (TPNR). Ratio composition of natural rubber to thermoplastic monomer determines the TPNR properties. TPNR has good mechanical properties of natural rubber and high processability of plastic material thus enhancing its application in industry. The research, which was conducted at research laboratory of Indonesian Rubber Research Institute, from June to December 2014, aimed to study the effect of the ratio of deproteinized natural rubber (DPNR) latex to vinyl monomer (VM: methyl methacrylate and styrene) on physical and mechanical properties of TPNR produced from batch graft copolymerization. Batch graft copolymerization was conducted at certain ratios of DPNR latex with methyl methacrylate and styrene (70:30; 60:40; and 50:50) at (65°C, 5 hours), and subsequently at (70°C, 1 hour). The result showed that batch technique tend to cause the formation of homopolymer vinyl which also affected the TPNR properties. Visually, the TPNR had white color, hard and brittle texture yet easier to process as shown by low time and energy consumption during compounding. The ratio of DPNR to VM at 70:30 was regarded as the optimum ratio for its balanced properties between elastomeric material of DPNR and thermoplastic material of VM.
KARAKTERISASI KARET SIKLO BERBASIS LATEKS KARET ALAM BERBOBOT MOLEKUL RENDAH Adi Cifriadi; Emil Budianto; Ary Achyar Alfa
Jurnal Penelitian Karet JPK : Volume 29, Nomor 1, Tahun 2011
Publisher : Pusat Penelitian Karet - PT. Riset Perkebunan Nusantara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22302/ppk.jpk.v29i1.110

Abstract

Untuk mengembangkan penggunaan karet siklo berbasis lateks karet alam, penelitian karakterisasi karet siklo yang berasal dari lateks karet alam dan lateks karet alam berbobot molekul rendah telah dilakukan. Penelitian dilakukan dalam dua tahap. Tahap pertama dilakukan penelitian tentang degradasi lateks karet alam menggunakan kombinasi bahan pendegradasi H2O2 dan NaNO2 untuk menghasilkan lateks karet alam berbobot molekul  rendah. Tahap kedua dipelajari karakteristik karet siklo dari siklisasi lateks karet alam dan lateks karet alam berbobot molekul rendah. Hasil penelitian menunjukkan bahwa degradasi lateks karet alam pada temperatur reaksi sebesar 70oC dengan bahan pendegradasi H2O2 1 bsk dan NaNO2 3 bsk selama 8 jam waktu reaksi dapat menghasilkan lateks karet alam yang memiliki bobot molekul rendah. Karet siklo dari siklisasi lateks karet alam berbobot molekul rendah memiliki daya rekatan lebih baik pada substrat karet-logam dan logam-logam.  How to Cite : Cifriadi, A., Budianto, E., & Alfa, A. A. (2016). Karakterisasi karet siklo berbasis lateks karet alam berbobot molekul rendah. Jurnal Penelitian Karet, 29(1), 35-48. Retrieved from http://ejournal.puslitkaret.co.id/index.php/jpk/article/view/110
Co-Authors Adi Cifriadi Ary Achyar Alfa Dadi Rusadi Maspanger Santi Puspitasari