Study on the application of ionic liquids in bio-based lubricant for a sustainable machining process

Many factors tend to influence the increased demand in recent years, including stateof- the-art of effective and environmentally friendly metalworking fluids (MWFs). Bio-based lubricants from vegetable oils are highly biodegradable, non-toxic, pose good lubricating properties and low production c...

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Main Author:	Abdul Sani, Amiril Sahab
Format:	Thesis
Language:	English English English
Published:	2018
Subjects:	QD Chemistry
Online Access:	http://eprints.uthm.edu.my/159/1/24p%20AMIRIL%20SAHAB%20ABDUL%20SANI.pdf http://eprints.uthm.edu.my/159/2/AMIRIL%20SAHAB%20ABDUL%20SANI%20COPYRIGHT%20DECLARATION.pdf http://eprints.uthm.edu.my/159/3/AMIRIL%20SAHAB%20ABDUL%20SANI%20WATERMARK.pdf
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spelling	my-uthm-ep.1592021-07-06T07:21:57Z Study on the application of ionic liquids in bio-based lubricant for a sustainable machining process 2018-10 Abdul Sani, Amiril Sahab QD Chemistry Many factors tend to influence the increased demand in recent years, including stateof- the-art of effective and environmentally friendly metalworking fluids (MWFs). Bio-based lubricants from vegetable oils are highly biodegradable, non-toxic, pose good lubricating properties and low production costs. They have been widely perceived as a potential to reduce or replace the high dependency on the applications of petroleum-based MWFs. However, the inconsistent chemical composition and low thermal and oxidative stabilities of the natural oils leaves significant uncertainties about the overall sustainability performance of the bio-based MWFs. In this study, with the objective of achieving machining sustainability, a novel chemically modified Jatropha-based trimethylolpropane ester (MJO) was refined by mixing it with ionic liquids (ILs) additives. Two biocompatible and oil-miscible ILs; [P6,6,6,14][(iC8)2PO2] (PIL) and [N1,8,8,8][NTf2] (AIL) were mixed in the MJO at 1, 5, and 10 % weight concentrations. The newly refined mixtures are validated for their physicochemical and tribological properties as well as when being applied for minimum quantity lubrication (MQL) machining (orthogonal and oblique) of AISI 1045 steel. Results showed that, the lubrication performance of MJO+AIL10% and MJO+PIL1% outperformed the other lubricant samples used herein. With improved physicochemical and tribological performances, e.g. corrosion inhibition, friction and wear reduction, smooth surface finish and high machining efficiency, they recorded improvement in machining forces up to 12 %, cutting temperature up to 10 %, surface roughness by 7% and increased cutting tool life up to 50 % compared to the commercial synthetic ester-based MWF. A machining sustainability index evaluation was applied to the MQL machining scenario and based on results, MJO+PIL1% obtained the highest score for minimum lubricant’s cost, minimal energy consumption, or the best sustainability performance (4.08/5) and seconded by MJO+AIL10% (4.06). These novel bio-based MWFs provide another alternative to the world dominating mineral oil-based lubricants for “greener” and more sustainable working environment. 2018-10 Thesis http://eprints.uthm.edu.my/159/ http://eprints.uthm.edu.my/159/1/24p%20AMIRIL%20SAHAB%20ABDUL%20SANI.pdf text en public http://eprints.uthm.edu.my/159/2/AMIRIL%20SAHAB%20ABDUL%20SANI%20COPYRIGHT%20DECLARATION.pdf text en staffonly http://eprints.uthm.edu.my/159/3/AMIRIL%20SAHAB%20ABDUL%20SANI%20WATERMARK.pdf text en validuser phd doctoral Universiti Tun Hussein Onn Malaysia Fakulti Kejuruteraan Mekanikal dan Pembuatan
institution	Universiti Tun Hussein Onn Malaysia
collection	UTHM Institutional Repository
language	English English English
topic	QD Chemistry
spellingShingle	QD Chemistry Abdul Sani, Amiril Sahab Study on the application of ionic liquids in bio-based lubricant for a sustainable machining process
description	Many factors tend to influence the increased demand in recent years, including stateof- the-art of effective and environmentally friendly metalworking fluids (MWFs). Bio-based lubricants from vegetable oils are highly biodegradable, non-toxic, pose good lubricating properties and low production costs. They have been widely perceived as a potential to reduce or replace the high dependency on the applications of petroleum-based MWFs. However, the inconsistent chemical composition and low thermal and oxidative stabilities of the natural oils leaves significant uncertainties about the overall sustainability performance of the bio-based MWFs. In this study, with the objective of achieving machining sustainability, a novel chemically modified Jatropha-based trimethylolpropane ester (MJO) was refined by mixing it with ionic liquids (ILs) additives. Two biocompatible and oil-miscible ILs; [P6,6,6,14][(iC8)2PO2] (PIL) and [N1,8,8,8][NTf2] (AIL) were mixed in the MJO at 1, 5, and 10 % weight concentrations. The newly refined mixtures are validated for their physicochemical and tribological properties as well as when being applied for minimum quantity lubrication (MQL) machining (orthogonal and oblique) of AISI 1045 steel. Results showed that, the lubrication performance of MJO+AIL10% and MJO+PIL1% outperformed the other lubricant samples used herein. With improved physicochemical and tribological performances, e.g. corrosion inhibition, friction and wear reduction, smooth surface finish and high machining efficiency, they recorded improvement in machining forces up to 12 %, cutting temperature up to 10 %, surface roughness by 7% and increased cutting tool life up to 50 % compared to the commercial synthetic ester-based MWF. A machining sustainability index evaluation was applied to the MQL machining scenario and based on results, MJO+PIL1% obtained the highest score for minimum lubricant’s cost, minimal energy consumption, or the best sustainability performance (4.08/5) and seconded by MJO+AIL10% (4.06). These novel bio-based MWFs provide another alternative to the world dominating mineral oil-based lubricants for “greener” and more sustainable working environment.
format	Thesis
qualification_name	Doctor of Philosophy (PhD.)
qualification_level	Doctorate
author	Abdul Sani, Amiril Sahab
author_facet	Abdul Sani, Amiril Sahab
author_sort	Abdul Sani, Amiril Sahab
title	Study on the application of ionic liquids in bio-based lubricant for a sustainable machining process
title_short	Study on the application of ionic liquids in bio-based lubricant for a sustainable machining process
title_full	Study on the application of ionic liquids in bio-based lubricant for a sustainable machining process
title_fullStr	Study on the application of ionic liquids in bio-based lubricant for a sustainable machining process
title_full_unstemmed	Study on the application of ionic liquids in bio-based lubricant for a sustainable machining process
title_sort	study on the application of ionic liquids in bio-based lubricant for a sustainable machining process
granting_institution	Universiti Tun Hussein Onn Malaysia
granting_department	Fakulti Kejuruteraan Mekanikal dan Pembuatan
publishDate	2018
url	http://eprints.uthm.edu.my/159/1/24p%20AMIRIL%20SAHAB%20ABDUL%20SANI.pdf http://eprints.uthm.edu.my/159/2/AMIRIL%20SAHAB%20ABDUL%20SANI%20COPYRIGHT%20DECLARATION.pdf http://eprints.uthm.edu.my/159/3/AMIRIL%20SAHAB%20ABDUL%20SANI%20WATERMARK.pdf
_version_	1747830543025700864

Study on the application of ionic liquids in bio-based lubricant for a sustainable machining process

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