Low-Field High-Resolution PFG-NMR to Predict the Size Distribution of Inner Droplets in Double Emulsions
Low-Field High-Resolution PFG-NMR to Predict the Size Distribution of Inner Droplets in Double Emulsions
复制标题
低场高分辨率 PFG-NMR 预测双乳液中内部液滴的尺寸分布
DOI：
10.1002/ejlt.202000193
复制
发表时间：
2020
影响因子：
2.7
通讯作者：
Khadem B
中科院分区：
文献类型：
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作者：
Khadem B
在双重乳液中，内部和外部液滴尺寸分布（DSD）决定了双重乳液的质量，因此必须进行测量。低场高分辨率脉冲场梯度核磁共振用于测量水包油包水双重乳液中的内部DSD。高斯相位分布的方法是采用两个正常分布的混合预测双峰内液滴。这种方法可以预测的膨胀的内部液滴在存储过程中的双重乳液，从而验证了一个现象学的人口平衡模型估计内部液滴溶胀。只有一小部分的内部液滴被发现在存储过程中膨胀，由于在拉普拉斯压力的差异，从而导致形成的双峰尺寸分布的内部droplets.Practical Applications：这种方法是有用的预测双重乳液在存储过程中的演变，在广泛的应用，如食品和医药产品。
In double emulsions, the inner and outer droplet size distribution (DSD) determines the quality of the double emulsion and is therefore essential to be measured. Low‐field high‐resolution pulsed‐field gradient nuclear magnetic resonance is used to measure the inner DSD in water‐in‐oil‐in‐water double emulsions. The Gaussian phase distribution approach is employed with a mixture of two normal distributions to predict bimodal inner droplets. This approach allows the prediction of the swelling of inner droplet during storage of double emulsions, and thus to validate a phenomenological population balance model estimating inner droplet swelling. Only a fraction of the inner droplets are found to swell during storage, due to differences in the Laplace pressure, thus leading to the formation of a bimodal size distribution of the inner droplets.Practical Applications: This methodology is useful to predict the evolution of double emulsions during storage, in a wide range of applications, such as food and pharmaceutical products.