Kinetic Study on the Isothermal and Nonisothermal Crystallization of Monoglyceride Organogels
The isothermal and nonisothermal crystallization kinetics of monoglyceride (MAG) organogels were studied by pulsed nuclear magnetic resonance (pNMR) and differential scanning calorimetry (DSC), respectively. The Avrami equation was used to describe the isothermal crystallization kinetics and experim...
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| Format: | Article |
| Language: | English |
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Wiley
2014-01-01
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| Series: | The Scientific World Journal |
| Online Access: | http://dx.doi.org/10.1155/2014/149753 |
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| author | Zong Meng Lijun Yang Wenxin Geng Yubo Yao Xingguo Wang Yuanfa Liu |
| author_facet | Zong Meng Lijun Yang Wenxin Geng Yubo Yao Xingguo Wang Yuanfa Liu |
| author_sort | Zong Meng |
| collection | DOAJ |
| description | The isothermal and nonisothermal crystallization kinetics of monoglyceride (MAG) organogels were studied by pulsed nuclear magnetic resonance (pNMR) and differential scanning calorimetry (DSC), respectively. The Avrami equation was used to describe the isothermal crystallization kinetics and experimental data fitted the equation fairly well. Results showed that the crystal growth of MAG organogels was a rod-like growth of instantaneous nuclei at higher degrees of supercooling and a plate-like form with high nucleation rate at lower degrees of supercooling. The exothermic peak in nonisothermal DSC curves for the MAG organogels became wider and shifted to lower temperature when the cooling rate increased, and nonisothermal crystallization was analyzed by Mo equation. Results indicated that at the same crystallization time, to get a higher degree of relative crystallinity, a higher cooling rate was necessary. The activation energy of nonisothermal crystallization was calculated as 739.59 kJ/mol according to the Kissinger method. Therefore, as the results of the isothermal and nonisothermal crystallization kinetics for the MAG organogels obtained, the crystallization rate, crystal nucleation, and growth during the crystallization process could be preliminarily monitored through temperature and cooling rate regulation, which laid the foundation for the real industrial manufacture and application of the MAG organogels. |
| format | Article |
| id | doaj-art-b054f07a35d7445b83b4d81440198236 |
| institution | Kabale University |
| issn | 2356-6140 1537-744X |
| language | English |
| publishDate | 2014-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | The Scientific World Journal |
| spelling | doaj-art-b054f07a35d7445b83b4d814401982362025-02-03T01:12:55ZengWileyThe Scientific World Journal2356-61401537-744X2014-01-01201410.1155/2014/149753149753Kinetic Study on the Isothermal and Nonisothermal Crystallization of Monoglyceride OrganogelsZong Meng0Lijun Yang1Wenxin Geng2Yubo Yao3Xingguo Wang4Yuanfa Liu5State Key Laboratory of Food Science and Technology, Synergetic Innovation Center of Food Safety and Nutrition, School of Food Science and Technology, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, ChinaState Key Laboratory of Food Science and Technology, Synergetic Innovation Center of Food Safety and Nutrition, School of Food Science and Technology, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, ChinaState Key Laboratory of Food Science and Technology, Synergetic Innovation Center of Food Safety and Nutrition, School of Food Science and Technology, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, ChinaPatent Examination Cooperation Center of the Patent Office, No. 3 Building, No. 11 Gaoliangqiaoxie Street, Haidian District, Beijing 100081, ChinaState Key Laboratory of Food Science and Technology, Synergetic Innovation Center of Food Safety and Nutrition, School of Food Science and Technology, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, ChinaState Key Laboratory of Food Science and Technology, Synergetic Innovation Center of Food Safety and Nutrition, School of Food Science and Technology, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, ChinaThe isothermal and nonisothermal crystallization kinetics of monoglyceride (MAG) organogels were studied by pulsed nuclear magnetic resonance (pNMR) and differential scanning calorimetry (DSC), respectively. The Avrami equation was used to describe the isothermal crystallization kinetics and experimental data fitted the equation fairly well. Results showed that the crystal growth of MAG organogels was a rod-like growth of instantaneous nuclei at higher degrees of supercooling and a plate-like form with high nucleation rate at lower degrees of supercooling. The exothermic peak in nonisothermal DSC curves for the MAG organogels became wider and shifted to lower temperature when the cooling rate increased, and nonisothermal crystallization was analyzed by Mo equation. Results indicated that at the same crystallization time, to get a higher degree of relative crystallinity, a higher cooling rate was necessary. The activation energy of nonisothermal crystallization was calculated as 739.59 kJ/mol according to the Kissinger method. Therefore, as the results of the isothermal and nonisothermal crystallization kinetics for the MAG organogels obtained, the crystallization rate, crystal nucleation, and growth during the crystallization process could be preliminarily monitored through temperature and cooling rate regulation, which laid the foundation for the real industrial manufacture and application of the MAG organogels.http://dx.doi.org/10.1155/2014/149753 |
| spellingShingle | Zong Meng Lijun Yang Wenxin Geng Yubo Yao Xingguo Wang Yuanfa Liu Kinetic Study on the Isothermal and Nonisothermal Crystallization of Monoglyceride Organogels The Scientific World Journal |
| title | Kinetic Study on the Isothermal and Nonisothermal Crystallization of Monoglyceride Organogels |
| title_full | Kinetic Study on the Isothermal and Nonisothermal Crystallization of Monoglyceride Organogels |
| title_fullStr | Kinetic Study on the Isothermal and Nonisothermal Crystallization of Monoglyceride Organogels |
| title_full_unstemmed | Kinetic Study on the Isothermal and Nonisothermal Crystallization of Monoglyceride Organogels |
| title_short | Kinetic Study on the Isothermal and Nonisothermal Crystallization of Monoglyceride Organogels |
| title_sort | kinetic study on the isothermal and nonisothermal crystallization of monoglyceride organogels |
| url | http://dx.doi.org/10.1155/2014/149753 |
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