Membrane Emulsification Using Oscillatory Motion

乳液在许多行业中发挥着重要作用，包括食品，制药，化妆品和燃料应用，对新型微粒材料和具有可调性能的核壳微胶囊的需求正在增长。这随着使用良性纳米颗粒的颗粒稳定乳液的出现而进一步增加，所述良性纳米颗粒提供几乎无限的稳定性和功能益处，而没有分子表面活性剂的可感知的健康和环境缺点。 膜乳化（ME）是近年来受到关注的一种新技术，因为它克服了传统高压或超声乳化中遇到的问题，例如低能量效率、严重磨损、差的液滴尺寸控制以及高温和剪切力上升（其损害易碎产品）。然而，其主要缺点是由液滴分离所需的高连续相流引起的相对低的分散相浓度。在许多情况下，这不能通过回收来减轻，因为回收可能会潜在地损坏先前形成的乳液液滴。 本研究的目的是开发新的能源效率的乳化技术的基础上结合振荡运动与优化的表面性能，以实现协同作用的预混合和振荡ME在混合振荡膜乳化（HOME）系统。另一个目的是证明所开发的设计用于生产生物活性乳剂和使用纳米颗粒进行颗粒稳定乳化的潜在益处。研究将包括振荡和表面性质对流型，传输机制，乳液性质和稳定性的影响的理论和实验研究。它还将包括使用商业膜以及具有特殊亲水/疏水涂层的微加工表面优化操作和设计参数。根据已发表的文献，这项研究可能被认为是加拿大ME的第一项研究，因此它提供了技术基础和HQP，以推动国家在该领域的领先地位。

Emulsions play important role in many industries including food, pharmaceuticals, cosmetics, and fuel applications, and demand is growing for novel micro-particle materials and core-shell microcapsules with tuned properties. This has further increased with emergence of particle-stabilized emulsions using benign nanoparticles that offer virtually infinite stability and functional benefits without the perceived health and environment drawbacks of molecular surfactants. Membrane emulsification (ME) is a new technique that received recent attention since it overcomes problems encountered in conventional high pressure or ultrasound emulsification such as low energy efficiency, sever abrasion, poor drop size control, and high temperature and shear rise that damage delicate products. Its main drawback however, is the relatively low dispersed phase concentration caused by high continuous phase flow needed for drop detachment. This, in many cases, cannot be mitigated by recycling since the latter can potentially damage previously formed emulsion droplets. This research proposal aims at developing novel energy efficient emulsification technology based on combining oscillatory motion with optimized surface properties to achieve synergy of premixing and oscillatory ME in a hybrid oscillatory membrane emulsification (HOME) system. Another objective is to demonstrate the potential benefits of the developed design for production of bioactive emulsions and in particle stabilized emulsification using nanoparticles. The research will include theoretical and experimental investigations of the effect of oscillation and surface properties on flow patterns, transfer mechanisms, and emulsion properties and stability. It will also include optimization of operating and design parameters using commercial membranes as well as micro-machined surfaces with special hydrophilic/ hydrophobic coating. Based on published literature, this research may be considered among the first in Canada in ME thus it provides technical foundations and HQP needed to advance the nation among the upfront leaders in this field.