Investigation on the effect of monoglyceride concentration on palm oil-based ALKYD resin preparation

Astimar Abdul Aziz, . and Zawawi Ibrahim, . and Muhammad Remanul Islam, . and Rosli Mohd Yunus, . and Md. Maksudur Rahman Khan, . and Ong Huei Ruey, . and Ridzuan Ramli, . and Hong Chi Shein, . and Rohaya Mohamed Halim, . Investigation on the effect of monoglyceride concentration on palm oil-based ALKYD resin preparation. pp. 299-306. ISSN 1511-2780

Alcoholysis and esterification are useful methods to prepare polyalkyds from vegetable oils. Reaction parameters and different concentration of raw materials have showed a significant role on the properties of the formulated polyalkyds. The formation of monoglyceride (MG) and diglyceride (DG) during the synthesis and their ratio may have a significant role on the properties of the polyalkyds. The goal of the present article was to investigate the effect of MG to DG ratio on alkyd resin synthesised from palm oil by alcoholysispolyesterification reactions catalysed by homo-hetero catalytic system. Different ratios of MG:DG were obtained from alcoholysis reaction by taking samples at different reaction times. The formation of the alkyd resin was confirmed by Fourier transform infrared spectroscopy (FTIR) with the presence of ester group (C-O-C). The molecular weight (Mw) of alkyd resin was determined by gel permeation chromatography (GPC). The alkyd resin prepared at higher MG:DG ratio exhibited higher initial rate of polyesterification reaction with higher Mw. In addition the film of alkyd resin prepared from higher MG:DG ratio presented better pencil hardness and chemical resistivity.

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Abstract

Alcoholysis and esterification are useful methods to prepare polyalkyds from vegetable oils. Reaction parameters and different concentration of raw materials have showed a significant role on the properties of the formulated polyalkyds. The formation of monoglyceride (MG) and diglyceride (DG) during the synthesis and their ratio may have a significant role on the properties of the polyalkyds. The goal of the present article was to investigate the effect of MG to DG ratio on alkyd resin synthesised from palm oil by alcoholysispolyesterification reactions catalysed by homo-hetero catalytic system. Different ratios of MG:DG were obtained from alcoholysis reaction by taking samples at different reaction times. The formation of the alkyd resin was confirmed by Fourier transform infrared spectroscopy (FTIR) with the presence of ester group (C-O-C). The molecular weight (Mw) of alkyd resin was determined by gel permeation chromatography (GPC). The alkyd resin prepared at higher MG:DG ratio exhibited higher initial rate of polyesterification reaction with higher Mw. In addition the film of alkyd resin prepared from higher MG:DG ratio presented better pencil hardness and chemical resistivity.

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Item Type:	Article
AGROVOC Term:	Palm oils
AGROVOC Term:	Vegetable oils
AGROVOC Term:	Mono and diglycerides
AGROVOC Term:	Esterification
AGROVOC Term:	Chemical synthesis
AGROVOC Term:	Esters
AGROVOC Term:	Chemical resistance
AGROVOC Term:	Coating materials
Depositing User:	Mr. AFANDI ABDUL MALEK
Last Modified:	24 Apr 2025 00:55
URI:	http://webagris.upm.edu.my/id/eprint/9946

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