Simarmata, Nurmaya J. (2013) KARAKTERISASI KARET ALAM SIKLO (CYCLO NATURAL RUBBER) YANG DIBUAT DARI KARET SIR 20 DENGAN KATALIS P2O5. Undergraduate thesis, UNIMED.
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Abstract
Penelitian ini bertujuan untuk mengetahui karakter CNR( Karet alam Siklis) yang diperoleh dari reaksi siklisasi antara SIR 20 dengan katalis P2O5. Metode yang digunakan dalam penelitian ini adalah metode siklisasi, yaitu Karet SIR 20 yang telah dilarutkan dalam toluene, akan direfluks selama 5 jam, suhu 110oC dengan bantuan katalis P2O5. Setelah diefluks CNR akan dikeringkan dalam oven selama 24 jam dengan suhu 50oC. Hasil penelitian menunjukan bahwa warna karet SIR 20 yang semula hitam akan berubah menjadi kecoklatan. Karakterisasi melalui analisa spektroskopi inframerah menunjukan adanya tiga ciri khas karet siklo, yakni munculnya puncak pada 2.931 cm-1, 1.450 cm-1, 759 cm-1, dan menghilangnya puncak 837 cm-1. Munculnya puncak kuat pada wilayah 2.700-3.000 cm-1, 1.450 cm-1, munculnya puncak baru pada 880 cm-1, serta ditandai dengan menghilangnya puncak 836 cm-1. puncak 2.931 cm-1 menunjukkan telah terjadi reaksi siklisasi.
Item Type: | Thesis (Undergraduate) | ||||||
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Call Number: | 547.842 6 Sim k | ||||||
Keywords: | Polimer; Karet; Sintesis; Siklo; Alam | ||||||
Subjects: | Q Science > QD Chemistry | ||||||
Divisions: | Fakultas Matematika dan Ilmu Pengetahuan Alam > Kimia | ||||||
Depositing User: | Mr Muhammad Iqbal | ||||||
Date Deposited: | 08 Apr 2016 08:34 | ||||||
URI: | http://digilib.unimed.ac.id/id/eprint/10439 |
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