CD Skripsi

Depolimerisasi Lateks Karet Alam SecaraKimia Menjadi Liquid Natural Rubber (Lnr) Menggunakan Katalis Cocl2 Dengan Variasi Kadar Nano2 Dan Waktu Reaksi

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ABSTRACT
Increase in derivative products from natural rubber latex with the
depolymerization process to low molecular weight Liquid Natural Rubber (LNR).
The use of CoCl2 and NaNO2 catalysts as degradation agents is believed to
increase the efficiency of the depolymerization process. The purpose of this
research is to synthesize LNR from natural rubber latex and determine the effect
of NaNO2 levels and chemical depolymerization reaction time of natural rubber
on the formation of molecular weight of Liquid Natural Rubber (LNR) products.
The method used to produce LNR consists of several stages. The initial stage is
the centrifugation of natural rubber latex which is the basic material in producing
LNR. Then the main process is chemical depolymerization of natural rubber latex
by the addition of degradation agents such as hydrogen peroxide, sodium nitrite
and the cobalt diclloride catalyst, which ends with the purification stage. The
chemical depolymerization process uses a variation of reaction time which is 7, 8
and 9 hours as well as variations in the content of NaNO2 degrading agents which
is 2, 3, 4 bsk (weight per hundred rubbers). The LNR results obtained will then be
analyzed using FTIR and GPC analysis tools. The results of this study found that
the reaction time of 8 hours gave the results of the LNR product that has the most
perfect shape because at temperatures below 100 oC can be poured until it flows
without the help of any media. So that the lowest molecular weight obtained is at
4 bsk NaNO2 degradation levels of 126,448 g/mol. By using the chemical
depolymerization process also undergoes the formation of functional groups such
as carbonyl and hydroxyl groups.
Keywords: depolymerization, dry rubber concentration, gel permeation
chromatography, natural rubber latex, reaction time

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Ketersediaan

Informasi Detail

Judul Seri

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No. Panggil

07 02. 120 (0002)

Penerbit

Pekanbaru : Universitas Riau – Fakultas Teknik – Kimia., 2020

Deskripsi Fisik

ix, 79 hlm.; ill.: 29 cm

Bahasa

Indonesia

ISBN/ISSN

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Klasifikasi

07 02. 120 (0002)

Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

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Subjek

TEKNIK KIMIA

Info Detail Spesifik

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Pernyataan Tanggungjawab

Daus

Versi lain/terkait

Lampiran Berkas

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