Influence of Shear Flow on the Crystallization of Organic Melt Emulsions – A Rheo‐NMR Investigation,Chemical Engineering & Technology

当前位置： X-MOL 学术 › Chem. Eng. Technol. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Influence of Shear Flow on the Crystallization of Organic Melt Emulsions – A Rheo‐NMR Investigation
Chemical Engineering & Technology ( IF 1.8 ) Pub Date : 2020-05-27 , DOI: 10.1002/ceat.202000193
Gina Kaysan ₁ , Burkard Spiegel ₁ , Gisela Guthausen ₂ , Matthias Kind ₁

Affiliation

There is a need to better understand the influence of shear flow on the crystallization of a molten oil phase in an oil/water emulsion due to its high relevance for industrial processes. The present study focuses on the influence of laminar shear flow on the crystallization kinetics of polydisperse n ‐hexadecane‐in‐water emulsions. The investigation was carried out by rheo‐nuclear magnetic resonance (NMR) spectroscopy in a Taylor‐Couette geometry. An accelerating impact of the shear rate on the overall crystallization kinetics was verified. This effect stems from an increase of the collision frequency of already crystallized droplets with not yet crystallized droplets. Nevertheless, the collision efficiency decreased with higher shear rate.

中文翻译：

剪切流对有机熔体乳液结晶的影响——流变核磁共振研究

由于剪切流与工业过程的高度相关性，因此需要更好地了解剪切流对油/水乳液中熔融油相结晶的影响。本研究的重点是层流剪切流对多分散水包正十六烷乳液结晶动力学的影响。该研究是通过流变核磁共振 (NMR) 光谱在 Taylor-Couette 几何中进行的。证实了剪切速率对整体结晶动力学的加速影响。这种效应源于已经结晶的液滴与尚未结晶的液滴碰撞频率的增加。然而，碰撞效率随着剪切速率的增加而降低。

更新日期：2020-05-27

点击分享查看原文

点击收藏

公开下载

阅读更多本刊最新论文本刊介绍/投稿指南11