CD Skripsi

Analisis Sifat Tribologi Biolubricant Ester Sintetik Minyak Sawit- Trimetilolpropana Terhadap Peningkatan Zat Aditif Nanoselulosa Nata De Coco Dan Span 60

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ABSTRACT
The growing demand for environmentally friendly and sustainable lubricants has driven the development of biolubricants derived from vegetable oils as alternatives to conventional mineral-based lubricants, which are known to be toxic and non-biodegradable. Indonesia holds significant potential for producing palm oil-based biolubricants due to its abundant palm oil resources. However, crude palm oil cannot be directly utilized as a lubricant because of its low oxidative stability, which makes it prone to thermal and chemical degradation during operation. To address this issue, a chemical modification through a transesterification process is required to produce palm oil–trimethylolpropane synthetic ester (TMP ester), which exhibits improved oxidative stability and enhanced lubrication properties. This study aims to evaluate the tribological properties of TMP ester-based biolubricants with the addition of nanocellulose derived from nata de coco (NDC) and the surfactant Sorbitan Monostearate (Span 60). Three different concentrations of Span 60 (0.6%, 0.9%, and 1.2% by weight) were combined with 0.9% NDC, and the resulting formulations were tested using a Four-Ball Tribometer in accordance with ASTM D-4172 standards. The evaluated parameters include dispersion stability, kinematic viscosity, and coefficient of friction (COF). The results show that the combination of NDC and Span 60 additives significantly enhances the lubricant’s tribological performance. The optimal formulation comprising 97.9% TMP ester, 0.9% NDC, and 1.2% Span 60 achieved a COF of 0.063847, representing an 18.15% reduction compared to pure TMP ester, along with improved viscosity stability. These findings demonstrate that the appropriate incorporation of nanocellulose and Span 60 can effectively improve the performance of palm-based ester lubricants, thereby supporting the development of efficient and environmentally sustainable biolubricants.
Keywords: biolubricant, palm oil-TMP ester, nata de coco, Span 60, tribology, Four-Ball Tribometer, coefficient of friction

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Ketersediaan

Informasi Detail

Judul Seri

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No. Panggil

2007114597

Penerbit

Pekanbaru : Universitas Riau – F.TEKNIK – mesin., 2025

Deskripsi Fisik

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Bahasa

Indonesia

ISBN/ISSN

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Klasifikasi

2007114597

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 MESIN

Info Detail Spesifik

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Pernyataan Tanggungjawab

daus

Versi lain/terkait

Lampiran Berkas

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