Temperature-Controlled Emulsion Formation via Phase Transition
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Solution Overview
Problem
Current methods for forming complex emulsions are limited by low yield, multi-step processes, and the need for solvent addition/extraction, which restricts precise control over droplet geometry and composition, particularly in applications like pharmaceuticals, medical diagnostics, and food manufacturing.
Innovation Solution
A method involving temperature adjustment to change the miscibility of components, allowing for one-step formation of multi-phase emulsions by making components miscible at one temperature and immiscible at another, enabling the creation of complex emulsions like Janus droplets and four-phase systems with controlled morphologies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If large-scale techniques using high-shear mixers and membranes are used, then productivity is improved, but manufacturing precision deteriorates due to compositional heterogeneity
Solution Approach 1:
The invention changes the physical parameter of temperature to control the miscibility of components. By heating the system above the upper consolute temperature, immiscible components become miscible, allowing homogeneous mixing. Upon cooling below this temperature, phase separation occurs to form the desired emulsion structure. This parameter change enables both high productivity and manufacturing precision.
Solution Approach 2:
The invention utilizes the phase transition phenomenon of liquid-liquid miscibility based on temperature. The system transitions from a miscible single-phase state at high temperature to an immiscible multi-phase state at low temperature. This phase transition mechanism allows for controlled emulsion formation with uniform composition while maintaining high fabrication throughput.
2Manufacturing precision
If multi-step processes with solvent addition and extraction are used, then manufacturing precision is improved, but productivity deteriorates due to process complexity
Solution Approach 1:
The invention merges multiple process steps into a single operation. Instead of separate steps for mixing, solvent addition, and extraction, the temperature-controlled miscibility approach combines these functions into one phase transition process. Heating miscibilizes components for uniform mixing, and cooling simultaneously creates the emulsion structure, eliminating the need for solvent extraction steps.
Solution Approach 2:
The invention uses temperature as a control parameter to achieve both mixing and emulsion formation in one step. By adjusting temperature above and below the consolute point, the system transitions between miscible and immiscible states, controlling droplet geometry and composition without requiring multiple process steps or solvent manipulation.
3Manufacturing precision
If microfluidic methods are used, then manufacturing precision is improved for small volumes, but productivity deteriorates due to limited scale
Solution Approach 1:
The invention creates a universal method that can operate at any scale. The temperature-controlled phase separation mechanism works equally well for microliter and liter-scale preparations. This eliminates the scale limitation of microfluidic devices while maintaining the ability to produce monodisperse droplets, as the phase transition occurs uniformly throughout the bulk system.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach allows for the facile and scalable fabrication of complex emulsions with controlled properties, enabling their use in various applications, including drug delivery, medical diagnostics, and food manufacturing, while avoiding the limitations of previous methods.
Implementation Method 1
the two or more components are substantially miscible at a first temperature, and wherein the two or more components are substantially immiscible at a second temperature
Data Source
AI summary
The present invention generally relates to compositions and methods for forming droplets and/or emulsions. In some embodiments, the compositions and methods comprise two or more components miscible at a first temperature and immiscible at a second temperature, dispersed in an outer phase.