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Palm oleic acid based alkyds: effect of the fatty acid content on the polyesterification kinetics

The kinetic behavior of polyesterification of the alkyd resins synthesized using glycerol and phthalic anhydride modified with oleic acid from the palm oil at temperatures between 120 and 240 °C was studied. Three alkyds having oleic acid contents of 28, 40, and 65 were prepared by employing fatty...

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Main Authors: Ataei, S., Yahya, Rosiyah, Gan, S.N.
Format: Article
Published: Springer 2011
Subjects:
QD Chemistry
Online Access:http://eprints.um.edu.my/6738/
https://doi.org/10.1007/s10924-011-0303-7
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spelling my.um.eprints.67382020-01-23T00:38:20Z http://eprints.um.edu.my/6738/ Palm oleic acid based alkyds: effect of the fatty acid content on the polyesterification kinetics Ataei, S. Yahya, Rosiyah Gan, S.N. QD Chemistry The kinetic behavior of polyesterification of the alkyd resins synthesized using glycerol and phthalic anhydride modified with oleic acid from the palm oil at temperatures between 120 and 240 °C was studied. Three alkyds having oleic acid contents of 28, 40, and 65 were prepared by employing fatty acid method. The extent of the polyesterification reaction and average degree of polymerization were monitored by determining the acid number of the aliquot of the reaction mixture at various intervals of time and by measuring the volume of water evolved. Kinetic studies revealed that initial reaction rates followed a second-order kinetics up to certain limit and thereafter deviations were observed. The extent of reaction varied from 77.4 to 86.3 before deviation for all the three samples and exhibited a considerable degree of conversion. The second-order rate constants calculated from the linear part were found to be of the order of 10 -5 g (mg KOH) -1 min -1. Molecular weight of the alkyd samples was determined by GPC; number average molecular weight of the alkyds ranged from 980 to 2,070. Springer 2011 Article PeerReviewed Ataei, S. and Yahya, Rosiyah and Gan, S.N. (2011) Palm oleic acid based alkyds: effect of the fatty acid content on the polyesterification kinetics. Journal of Polymers and the Environment, 19 (2). pp. 540-545. ISSN 1566-2543 https://doi.org/10.1007/s10924-011-0303-7 doi:10.1007/s10924-011-0303-7
institution Universiti Malaya
building UM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaya
content_source UM Research Repository
url_provider http://eprints.um.edu.my/
topic QD Chemistry
spellingShingle QD Chemistry
Ataei, S.
Yahya, Rosiyah
Gan, S.N.
Palm oleic acid based alkyds: effect of the fatty acid content on the polyesterification kinetics
description The kinetic behavior of polyesterification of the alkyd resins synthesized using glycerol and phthalic anhydride modified with oleic acid from the palm oil at temperatures between 120 and 240 °C was studied. Three alkyds having oleic acid contents of 28, 40, and 65 were prepared by employing fatty acid method. The extent of the polyesterification reaction and average degree of polymerization were monitored by determining the acid number of the aliquot of the reaction mixture at various intervals of time and by measuring the volume of water evolved. Kinetic studies revealed that initial reaction rates followed a second-order kinetics up to certain limit and thereafter deviations were observed. The extent of reaction varied from 77.4 to 86.3 before deviation for all the three samples and exhibited a considerable degree of conversion. The second-order rate constants calculated from the linear part were found to be of the order of 10 -5 g (mg KOH) -1 min -1. Molecular weight of the alkyd samples was determined by GPC; number average molecular weight of the alkyds ranged from 980 to 2,070.
format Article
author Ataei, S.
Yahya, Rosiyah
Gan, S.N.
author_facet Ataei, S.
Yahya, Rosiyah
Gan, S.N.
author_sort Ataei, S.
title Palm oleic acid based alkyds: effect of the fatty acid content on the polyesterification kinetics
title_short Palm oleic acid based alkyds: effect of the fatty acid content on the polyesterification kinetics
title_full Palm oleic acid based alkyds: effect of the fatty acid content on the polyesterification kinetics
title_fullStr Palm oleic acid based alkyds: effect of the fatty acid content on the polyesterification kinetics
title_full_unstemmed Palm oleic acid based alkyds: effect of the fatty acid content on the polyesterification kinetics
title_sort palm oleic acid based alkyds: effect of the fatty acid content on the polyesterification kinetics
publisher Springer
publishDate 2011
url http://eprints.um.edu.my/6738/
https://doi.org/10.1007/s10924-011-0303-7
_version_ 1657488173147619328
score 13.211869

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