Abstract

Methyl ester sulphonates (MES) have been considered as an alternative green surfactant for the detergent market. Investigation on the purification of methyl ester sulphonates (MES) with various carbon chains of C12, C14, C16 and C16–18 derived from palm methyl ester is of great interest. These MES powders have been repeatedly crystallized with ethanol and the purity of MES has increased to a maximum of 99% active content and 96% crystallinity index without changing the structure. These crystallized MES with high active content have 1.0% to 2.3% moisture content and retained its di-salt content in the range of 5%. The crystallized MES C16 and C16–18 attained excellent flow characteristics. Morphology, structural and its crystallinity analyses showed that the crystals MES had good solubility properties, stable crystal structure (β polymorphic) and triclinic lateral structure when it is in high active content. The brittleness of MES crystals increased from a β’ to a β subcell. Crystal with high brittleness has the potential to ease production of powder, which leads to a reduction in the cost of production and improves efficiency.

Highlights

  • Methyl esters without any further modification are used as diesel substitute or biodiesel

  • Methyl ester sulphonates (MES) Powder study was to investigate the feasibility of employing the crystallization process with ethanol as the solvent, to produce crystallized powder of various with, 97%

  • The signal for carbon directly attached to the ester group (–OCH3 –) is observed at peak 52.96 to 53.06 ppm and the carbon (C=O) appears at peak 170.52 to 170.59 ppm. Both Fourier Transform—Infrared spectroscopy (FTIR) and Nuclear Magnetic Resonance Analysis (NMR) results are in good agreement with the results obtained from the literature and prove that all are MES products [23]

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Summary

Introduction

Methyl esters without any further modification are used as diesel substitute or biodiesel. MES C12process and C14with based on palm study was to investigate the feasibility of employing crystallization ethanol as oil the are not commercially available; MPOB has the capability to produce the middle cut solvent, to produce crystallized MES powder of various carbons with 97% to 99% active contentwith and active contents of 68% andfor. Active content had been obtained through grinding, crystallization and drying processes Processes were to eliminate moisture content and increase active content but retain the di-salt content The solvent crystallization process can increase product stability, which can have a positive influence in reducing manufacturing costs.

Structural Conformation of Crystallized MES Powder
Surface Morphology
Flow Behavior
Solubility
Melting Point
Preparation of Crystallized MES Powder
MES Specifications
Active Content
Fourier Transform—Infrared Analysis
Scanning Electron Microscopy Analysis
Particle Size Distribution Analysis
Flow behavior
X-ray Diffraction
Conclusions
Patents
Full Text
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