Kinetics of Isothermal Crystallization of Hydrogenated Castor Oil-in-Water Emulsions

被引：1

作者：

Yang, Dingzheng ^{[1
]}

Hrymak, Andrew N. ^{[2
]}

Kedzior, Stephanie ^{[3
]}

机构：

[1] McMaster Univ, Dept Chem Engn, Hamilton, ON L8S 4L7, Canada

[2] Univ Western Ontario, Dept Chem & Biochem Engn, London, ON N6A 5B9, Canada

[3] Univ Waterloo, Dept Nanotechnol Engn, Waterloo, ON N2L 3G1, Canada

来源：

JOURNAL OF THE AMERICAN OIL CHEMISTS SOCIETY | 2013年 / 90卷 / 11期

基金：

加拿大自然科学与工程研究理事会;

关键词：

DSC; Microscopy; Hydrogenated castor oil; Emulsion; Crystallization kinetics; Morphology; Avrami model; DIFFERENTIAL SCANNING CALORIMETRY; CRYSTAL MORPHOLOGY;

D O I：

10.1007/s11746-013-2318-9

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Kinetics of isothermal crystallization of hydrogenated castor oil in water emulsions exhibiting multiple crystal morphologies have been studied experimentally by DSC and polarized light microscopy. The induction time of nucleation increases with the increase of the isothermal temperature under which crystallization occurred. Crystal growth has been observed by microscopy showing that both crystal morphologies, fibers and rosettes, grow linearly at the initial stage of crystallization and then slow down to reach a plateau value. The Avrami model, which has been widely used in kinetics studies of triacylglycerol systems, was employed to fit experimental results at different isothermal temperatures. It was found that experimental trends could be captured by introducing the volume fraction of each type of morphology into three-dimensional and one-dimensional full Avrami models.

引用

页码：1743 / 1750

页数：8

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