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Thermal Behavior of the Divalent Metal Soaps of Flax, Hemp, and Safflower Seed Oils     
Yazarlar
Dr. Öğr. Üyesi Senem YETGİN Dr. Öğr. Üyesi Senem YETGİN
Kastamonu Üniversitesi, Türkiye
Theresa Egbuchunam
Özet
This study investigated the thermal behavior of metal (barium, calcium, and zinc) soaps of flaxseed (FSO), hemp seed (HSO), and safflower (SFO) oils. The soaps were prepared by metathesis in an alcohol solution and characterized using the infrared (IR) spectroscopic technique, thermal methods, scanning electron microscopy (SEM), and energy-dispersive spectroscopy (EDS) measurements. Features that are characteristic of specific compounds were observed from the IR graphs. The thermal behavior of the soaps was examined by simultaneous thermogravimetry, differential thermal analysis, and derivative thermogravimetry (TGA, DTA, and DTG, respectively), and it was found that degradation of the metal soaps was a multistep process: melting followed by decomposition. The percentage mass loss at various temperatures and residual mass at 600 °C were used as the indicators of the thermal stability of the metal soaps. The results showed that metal soaps obtained from different vegetable oils with the same metal ion showed differences, as did metal soaps obtained with the same vegetable oil but with different metal ions. The barium soap of SFO appeared to be more thermally stable than the other divalent metal soaps. The metal soaps show an irregular morphology with somewhat elongated plate-like structures, possibly from various multistructural groups in the soap matrix.
Anahtar Kelimeler
Makale Türü Özgün Makale
Makale Alt Türü SSCI, AHCI, SCI, SCI-Exp dergilerinde yayımlanan tam makale
Dergi Adı INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
Dergi ISSN 0888-5885
Dergi Tarandığı Indeksler SCI-Expanded
Dergi Grubu Q1
Makale Dili İngilizce
Basım Tarihi 12-2022
Cilt No 61
Sayı 48
Sayfalar 17707 / 17714
Doi Numarası 10.1021/acs.iecr.2c02076
Makale Linki https://pubs.acs.org/doi/10.1021/acs.iecr.2c02076