Caffeine Crystallization Induction Time Measurements Using Laser Scattering Technique and Correlation to Surface Tension in Water and Ethanol

›› 2010, Vol. 18 ›› Issue (5): 767-769.

• SEPARATION SCIENCE AND ENGINEERING • Previous Articles Next Articles

Caffeine Crystallization Induction Time Measurements Using Laser Scattering Technique and Correlation to Surface Tension in Water and Ethanol

HAN Jiabin^1,2, WANG Jingkang¹

1. School of Chemical Engineering & Technology, Tianjin University, Tianjin 300072, China;
2. Earth and Environmental Science Division, Los Alamos National Laboratory, Los Alamos, New Mexico, USA

Received:2010-01-05 Revised:2010-07-14 Online:2010-10-28 Published:2010-10-28

Caffeine Crystallization Induction Time Measurements Using Laser Scattering Technique and Correlation to Surface Tension in Water and Ethanol

韩佳宾^1,2, 王静康¹

1. School of Chemical Engineering & Technology, Tianjin University, Tianjin 300072, China;
2. Earth and Environmental Science Division, Los Alamos National Laboratory, Los Alamos, New Mexico, USA

通讯作者: HAN Jiabin,E-mail:jhan@lanl.gov;jiabin.han@gmail.com

Abstract

Abstract: Caffeine nucleation induction times were measured at 30℃ and 40℃ in water and ethanol solvents employing laser light absorption technique. Supersaturation concentrations and liquid/solid phase surface tensions were calculated from crystallization induction times using classic homogeneous nucleation theory. Induction time and surface tension decreased at higher temperature.

Key words: caffeine, induction time, crystallization, surface tension

摘要： Caffeine nucleation induction times were measured at 30℃ and 40℃ in water and ethanol solvents employing laser light absorption technique. Supersaturation concentrations and liquid/solid phase surface tensions were calculated from crystallization induction times using classic homogeneous nucleation theory. Induction time and surface tension decreased at higher temperature.

关键词: caffeine, induction time, crystallization, surface tension

HAN Jiabin, WANG Jingkang. Caffeine Crystallization Induction Time Measurements Using Laser Scattering Technique and Correlation to Surface Tension in Water and Ethanol[J]. , 2010, 18(5): 767-769.

韩佳宾, 王静康. Caffeine Crystallization Induction Time Measurements Using Laser Scattering Technique and Correlation to Surface Tension in Water and Ethanol[J]. , 2010, 18(5): 767-769.

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Caffeine Crystallization Induction Time Measurements Using Laser Scattering Technique and Correlation to Surface Tension in Water and Ethanol

Caffeine Crystallization Induction Time Measurements Using Laser Scattering Technique and Correlation to Surface Tension in Water and Ethanol

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