Production of palm-based glycol ester via autocatalytic esterification


Citation

Noor Azeerah Abas, . and Rozita Yusoff, . and Haliza Abdul Aziz, . and Zainab Idris, . Production of palm-based glycol ester via autocatalytic esterification. pp. 117-123. ISSN 1511-2780

Abstract

The self-esterification of the lauric acid (LA) with diethylene glycol (DEG) to produce diethylene glycol dilaurate (DEG-DL) was conducted under atmospheric via conventional method. The effects of reaction temperature reactant molar ratio and stirring speed rate were studied. Results showed that the composition of DEG-DL was increased with the increase in reaction temperature and reactant molar ratio. The reaction rate was observed independent of stirring speed rate. A high conversion of LA (90) was obtained based on one-factor-at-time (OFAT) method of designing experiments. At the reaction temperature of 230C and molar ratio of LA: DEG was varied from 1:1 to 2:1 the composition of DEG-DL was increased from 50.1 to 97.2. Nuclear magnetic resonance (NMR) spectra confirmed a compound produced was DEG-DL based on structural result. The acid value of LA was reduced from 182 to 3.09 mg KOH g-1 LA. The autocatalytic esterification is a clean reaction as it omits the separation step of catalyst and solvents. The hydrophilic lipophilic balance (HLB) index calculated for DEG-DL was 7.5 and potentially functioned as a water-in-oil or oil-in-water emulsifier for cosmetic applications.


Download File

Full text available from:

Abstract

The self-esterification of the lauric acid (LA) with diethylene glycol (DEG) to produce diethylene glycol dilaurate (DEG-DL) was conducted under atmospheric via conventional method. The effects of reaction temperature reactant molar ratio and stirring speed rate were studied. Results showed that the composition of DEG-DL was increased with the increase in reaction temperature and reactant molar ratio. The reaction rate was observed independent of stirring speed rate. A high conversion of LA (90) was obtained based on one-factor-at-time (OFAT) method of designing experiments. At the reaction temperature of 230C and molar ratio of LA: DEG was varied from 1:1 to 2:1 the composition of DEG-DL was increased from 50.1 to 97.2. Nuclear magnetic resonance (NMR) spectra confirmed a compound produced was DEG-DL based on structural result. The acid value of LA was reduced from 182 to 3.09 mg KOH g-1 LA. The autocatalytic esterification is a clean reaction as it omits the separation step of catalyst and solvents. The hydrophilic lipophilic balance (HLB) index calculated for DEG-DL was 7.5 and potentially functioned as a water-in-oil or oil-in-water emulsifier for cosmetic applications.

Additional Metadata

[error in script]
Item Type: Article
AGROVOC Term: Palm oils
AGROVOC Term: Palm kernel oil
AGROVOC Term: Esters
AGROVOC Term: Chemical synthesis
AGROVOC Term: Esterification
AGROVOC Term: NMR spectroscopy
AGROVOC Term: Lauric acid
AGROVOC Term: Glycols
AGROVOC Term: Surfactants
AGROVOC Term: Temperature
Depositing User: Mr. AFANDI ABDUL MALEK
Last Modified: 24 Apr 2025 00:54
URI: http://webagris.upm.edu.my/id/eprint/8954

Actions (login required)

View Item View Item