Lubricity of bio-based lubricant derived from different chemically modified fatty acid methyl ester by Mohd Zulkifli, Nurin Wahidah, Nor Azman, Siti Safiyah, Kalam, Md. Abul, Hassan, Masjuki, Yunus, Robiah, Gulzar, Mubashir

“…The trimethylolpropane (TMP) and pentaerythritol ester (PE) were produced from palm oil methyl ester; they are biodegradable and have high lubricity properties. Two different conditions of lubrication were investigated. …”
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Biobased lubricants: harnessing the richness of agriculture resources by Yunus, Robiah

“…Target applications include polymer, lubricant, solvent, adhesive, herbicide, and pharmaceutical industries. …”
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Rysoil™ - high performance synthetic lubricants from palm oil by Yunus, Robiah

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The effect of temperature on tribological properties of chemically modified bio-based lubricant by Mohd Zulkifli, Nurin Wahidah, Md. Abul Kalam, Hassan, Masjuki, Al Mahmud, Khandakar, Yunus, Robiah

“…Vegetable oil has several characteristics that provide advantages for use as lubricant. This includes a high viscosity index, high flash point, high biodegradability, and friction and wear reduction properties. …”

Nonionic polyol esters as thinner and lubricity enhancer for synthetic-based drilling fluids by Kania, Dina, Yunus, Robiah, Omar, Rozita, Abdul Rashid, Suraya, Jan, Badrul Mohamed, Arsanjani, Niloofar

“…This study evaluates the performance of polyol esters as thinners and lubricity enhancers in invert emulsion synthetic-based drilling mud (SBM). …”

Temperature effect on tribological properties of polyol ester-based environmentally adapted lubricant by Mohamad Aziz, Nur Atiqah, Yunus, Robiah, Rashid, Umer, Mohd Zulkifli, Nurin Wahidah

“…The production of pentaerythritol ester (PE) as food grade lubricant base oil was investigated. The properties of formulated lubricant (AWCI) and neopentyl glycol ester (NPGE) were tested – density, viscosity, total acid number, flash point, copper strip corrosion and NOACK. …”
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Nonionic polyol esters as thinner and lubricity enhancer for synthetic-based drilling fluids by Kania, Dina, Yunus, Robiah, Omar, Rozita, Abdul Rashid, Suraya, Mohamed Jan, Badrul, Arsanjanid, Niloofar

“…This study evaluates the performance of polyol esters as thinners and lubricity enhancers in invert emulsion synthetic-based drilling mud (SBM). …”
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Palm oil derived trimethylolpropane triesters synthetic lubricants and usage in industrial metalworking fluid by Chang, Teck Sin, Yunus, Robiah, Rashid, Umer, Choong, Thomas Shean Yaw, Awang Biak, Dayang Radiah, Muhammad Syam, Azhari

“…Trimethylolpropane triesters are biodegradable synthetic lubricant base oil alternative to mineral oils, polyalphaolefins and diesters. …”

AW/EP behavior of WS2 nanoparticles added to vegetable oil-based lubricant by Gulzar, Mubashir, Hassan, Masjuki, Kalam, Md. Abul, Munusamy, Mahendra Varman, Mufti, Riaz Ahmad, Zahid, Rehan, Yunus, Robiah

“…Improvement in the anti-wear (AW) and extreme pressure (EP) ability of chemically modified jatropha oil (CMJO) by adding nanoparticles was experimentally evaluated. Nano-lubricants were synthesized by adding 1 wt% tungsten disulfide (WS2) nanoparticles to CMJO. …”
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Wear prevention characteristics of a palm oil-based TMP (trimethylolpropane) ester as an engine lubricant by Zulkifli, Nurin Wahidah Mohd, Kalam, Md. Abul, Masjuki, Haji Hassan, Shahabuddin, M., Yunus, Robiah

“…Three different regimes of lubrications are investigated, which hydrodynamic, elasto hydrodynamic and boundary lubrications. …”

Wear prevention characteristics of a palm oil-based TMP (trimethylolpropane) ester as an engine lubricant by Mohd Zulkifli, Nurin Wahidah, Kalam, Md. Abul, Hassan, Masjuki, Ahmmad, Md Shahabuddin, Yunus, Robiah

“…Three different regimes of lubrications are investigated, which hydrodynamic, elasto hydrodynamic and boundary lubrications. …”
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Effect of additives on lubrication properties of palm oil-based trimethylolpropane ester for hydraulic fluid application by Alias, Nor Halaliza, Yunus, Robiah, Idris, Azni

“…The objective of this research is to study the lubrication properties of the formulated TMPE (TMPE + 1.0% of Additive A), namely the pour point (PP) test, wear and friction test and filterability test. …”
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The feasibility study of CaCO3 derived from cockleshell as nanoparticle in chemically modified lubricant by Zainal, Nurul Adzlin, Mohd Zulkifli, Nurin Wahidah, Yusof, Mahshuri, Hassan, Masjuki, Yunus, Robiah

“…The tribological properties of the CaCO3 nanoparticles as an additive in bio-based lubricant were evaluated with a four-ball tester. The bio-based lubricant is a mixture of PAO and 5% palm oil-based TMP ester. …”
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Study on effect of hydroxyl group on lubrication properties of palm based trimetylolpropane esters: Development of synthesis method by Abu Bakar, Anita, Yunus, Robiah, Abdullah, Luqman Chuah, Ahmadun, Fakhru'l-Razi

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Performance evaluation of polyol esters from palm oil as a lubricant for bentonite suspension drilling fluid by Kania, Dina, Yunus, Robiah, Omar, Rozita, Abdul Rashid, Suraya, Mohamed Jan, Badrul

“…PEE showed the best performance as it produced the highest lubricity and the lowest effect on the suspension texture. …”
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Utilization of MATLAB to Simulate Kinetics of Transesterification of Palm Oil-Based Methyl Esters with Trimethylolpropane for Biodegradable Synthetic Lubricant Synthesis by Abd Hamid, Hamidah, Yunus, Robiah, Choong, Thomas Shean Yaw

“…This paper presents the simulation work on kinetic study for the transesterification reaction between palm oil-based methyl ester with trimethylolpropane to produce biodegradable lubricant base oil. The reaction mechanism involves three stepwise reversible series-parallel elementary reactions. …”
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Lubricity performance of non-ionic surfactants in high-solid drilling fluids: a perspective from quantum chemical calculations and filtration properties by Kania, Dina, Yunus, Robiah, Omar, Rozita, Abdul Rashid, Suraya, Mohamed Jan, Badrul, Aulia, Akmal

“…High solid contaminants can have an impact on mud lubricity and can contribute to thicker a mud cake. …”

Tribological compatibility analysis of conventional lubricant additives with palm trimethylolpropane ester (TMP) and tetrahedral amorphous diamond-like carbon coating (ta-C) by Zahid, Rehan, Mufti, Riaz Ahmad, Gulzar, Mubashir, Masjuki, Haji Hassan, Alabdulkarem, Abdullah, Varman, Mahendra, Kalam, Md. Abul, Zulkifli, Nurin Wahidah Mohd, Yunus, Robiah

“…Modern industrial applications involve rigorous operating conditions due to which lubricant either slips out of the contact or its thin layer resides between the interacting surfaces. …”

Palm oil based trimethylolropane esters. by Yunus, Robiah, Ahmadun, Fakhru'l-Razi, Ooi, Tian Lye

“…Biodegradable polyol esters derived from branced polyol have been developed for various biodegradable lubricant applications. These fluids have excellent thermal stability, better lubricity, low volatility and resits hydrolysis better than other esters. …”

Tribological characteristics comparison of formulated palm trimethylolpropane ester and polyalphaolefin for cam/tappet interface of direct acting valve train system by Zahid, Rehan, Hassan, Masjuki, Alabdulkarem, Abdullah, Varman, Mahendra, Kalam, Md. Abul, Mufti, Riaz Ahmad, Mohd Zulkifli, Nurin Wahidah, Gulzar, Mubashir, Bhutta, Muhammad Usman, Ali, Mian Ashfaq, Yunus, Robiah

“…To prove the suitability of TMP for applications involving boundary-lubrication regime such as cam/tappet interface of direct acting valve train system, a logical step forward is to investigate their compatibility with conventional lubricant additives. …”
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