Optimization On The Nanoparticle Suspension For Better Dispersion In Liquid Phase

Mohd Nawi, Al Alif Elmi (2016) Optimization On The Nanoparticle Suspension For Better Dispersion In Liquid Phase. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

This study focused on applying the Design of Experiment (DOE) method to investigate the effect of difference surfactant agent for better dispersion of solid nanoparticles inside the liquid phase. The nanoparticles have agglomeration problem when its added in the lubricant as an additive. Occurrence of agglomeration towards nanoparticles can produce the sedimentation of nanoparticle inside the oil. This condition can affect the stability of the nano-oil. An experimental procedure was conducted to identify the effect of difference dispersion agent homogenize the conventional engine oil SAE 15W40 grade added with nanoparticles as Nano-oil sample. Difference surfactant agent were used which are sodium cholate, oleic acid and Sodium Benzene Dodecyl Sulphonate (SDBS) for the homogenize process. The absorbance value of the nano-oil was measured using UV-spectrometer as quantitative results. The samples also was be observed periodically by capturing the image of the Nano-oil as a qualitative result. The nanoparticles that were used are hexagonal boron nitride (hBN), alumina (Al2O3), and graphite. The outcome of this study was demonstrated that suspension in the conventional engine oil SAE 15W40 with the addition of hBN nanoparticles by mixed SDBS agent was stable over the period of 58 days. This condition was strengthened by comparing the absorbance values and the gradient on the nano-oil with the mixtures of hBN nanoparticle and SDBS agent is greater compared to others sample whereby indicates sample with the addition of SDBS agent gives more stability dispersion through the hBN nanoparticles inside the oil.

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