The synthesis of galactomannan maleic esters has been conducted by esterification of galactomannan palm seed (Arenga pinnata Merr.) with maleic anhydride using NaHCO3 as catalyst assisted by microwave irradiation. Extraction of galactomannan from palm seeds was carried out using water and ethanol as solvent followed by drying resulting galactomannan of 4.3%. The esterification was performed under microwave irradiation with power of 10P for 3, 5, 7, 9 and 11 minutes. The formation of a galactomannan ester was indicated by the appearance of a peak at a wavenumber of 1722 cm-1 which showed the presence of a C=O ester group. The titration method was used to determine the degree of substitution of the ester formed. The highest degree of substitution was 2.47 which obtained after 9 minutes irradiation. The scanning electron microscopy (SEM) analysis shows changes in surface morphology from bumpy fused fiber in galactomannan to sided coarse grains which indicates that an esterification reaction has occurred in galactomannan.
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24 May 2023
THE 2ND INTERNATIONAL CONFERENCE ON CHEMICAL SCIENCE AND TECHNOLOGY INNOVATION (ICOCSTI 2021): A chemical breakthrough for science technology innovation
24 November 2021
Medan, Indonesia
Research Article|
May 24 2023
Synthesis of galactomannan maleic ester from galactomannan Arenga pinnata Merr with maleic anhydride using microwave method and sodium hydrogen carbonate Available to Purchase
Juliati Br. Tarigan;
Juliati Br. Tarigan
a)
Department of Chemistry, Universitas Sumatera Utara
, Medan 20155, Indonesia
a)Corresponding author: [email protected]
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Anggi Modesly Panjaitan
Anggi Modesly Panjaitan
Department of Chemistry, Universitas Sumatera Utara
, Medan 20155, Indonesia
Search for other works by this author on:
Juliati Br. Tarigan
a)
Department of Chemistry, Universitas Sumatera Utara
, Medan 20155, Indonesia
Anggi Modesly Panjaitan
Department of Chemistry, Universitas Sumatera Utara
, Medan 20155, Indonesia
a)Corresponding author: [email protected]
AIP Conf. Proc. 2626, 060002 (2023)
Citation
Juliati Br. Tarigan, Anggi Modesly Panjaitan; Synthesis of galactomannan maleic ester from galactomannan Arenga pinnata Merr with maleic anhydride using microwave method and sodium hydrogen carbonate. AIP Conf. Proc. 24 May 2023; 2626 (1): 060002. https://doi.org/10.1063/5.0149710
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