乳液中结晶与溶解的超声监测

• 作 者: 郝乃澜
• 出 处: 应用声学
• 发表日期: 1993年01期
• 关键词: 膨胀测定法 悬浮粒子 超声声速 超声监测 声衰减 液滴 电子自旋共振 脉冲回波法 相变动力学 集中参数系统

许多油-水乳液的性质与分散相的固、液态有关。例如,食品乳液中液滴与悬浮粒子之间小分子的分布和聚集受到分散相阶段的强烈影响。有许多技术被用来监测乳液的结晶过程,它们包括:膨胀测定法、宽带核磁共振、X射线衍射、各种热学分析法及电子自旋共振。本文所描述方法的原理是测量乳液中的超声声速和声衰减。该方法与其它现有方法相比,具有成本低、

The nature of many oil-in-water emulsions is related to the solid and liquid phases of the dispersed phase. For example, the distribution and aggregation of small molecules between droplets and suspended particles in food emulsions is strongly influenced by the phase of the dispersed phase. There are many techniques that can be used to monitor the crystallization of emulsions. These include: swelling assays, broadband NMR, X-ray diffraction, various thermal analyzes, and electron spin resonance. The principle of the method described here is to measure the ultrasonic velocity of sound and sound attenuation in the emulsion. Compared with other existing methods, the method has the advantages of low cost,