Liquid Coacervate Particles Phase Separation Fabrication
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current methods for fabricating hierarchical multi-phase structures are limited by scalability, size control, ease of fabrication, and morphological diversity, particularly in microfluidic and bulk techniques for liquid-liquid and gel systems.
Innovation Solution
A method involving the stimulation of droplets to induce phase separation points, forming coacervate domains within droplets, which can be stabilized to create nano- to microscale liquid coacervate particles or coated substrates, using techniques like mechanical agitation, sonication, or microfluidics, and incorporating polymers such as elastin-like polypeptides for controlled phase separation and self-assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If microfluidic techniques are used for fabrication of hierarchical liquid-liquid and gel systems, then control over layering of distinct phases is improved, but scalability and fabrication throughput deteriorate
Solution Approach 1:
The patent replaces complex microfluidic mechanical systems with a simpler chemical approach using bulk solution mixing and phase separation. By using immiscible liquid phases and controlling interfacial tension through surfactants, the invention achieves phase separation without requiring sophisticated microfluidic devices, thereby improving scalability while maintaining phase control.
Solution Approach 2:
The invention controls phase separation and structure formation by adjusting key parameters such as surfactant concentration, oil-to-water ratio, and phase separation temperature. These parameter changes enable control over droplet size, coacervate formation, and hierarchical structure development in bulk systems, achieving precision comparable to microfluidic methods but with much higher throughput.
2Adaptability or versatility
If layer-by-layer deposition is used for assembly of multi-phase compartments, then morphological diversity is improved, but device complexity and fabrication difficulty worsen
Solution Approach 1:
The patent employs self-assembly mechanisms where amphiphilic molecules and block copolymers spontaneously organize into hierarchical structures at liquid-liquid interfaces. This self-service approach eliminates the need for complex external assembly devices, as the system automatically generates diverse morphologies including droplets, coacervates, and core-shell structures through thermodynamic driving forces.
Solution Approach 2:
The invention uses composite material systems combining surfactants, block copolymers, and immiscible liquid phases to generate morphological diversity. By varying the composition and properties of these composite materials, a wide range of structures can be formed without requiring complex deposition equipment, thereby achieving versatility with simpler fabrication.
3Productivity
If bulk techniques are used for fabrication of multi-phase structures, then scalability is improved, but control over particle size and morphology deteriorates
Solution Approach 1:
The patent introduces surfactants and block copolymers as intermediary substances that mediate between the bulk phase and individual droplets. These intermediaries adsorb at liquid-liquid interfaces, controlling droplet coalescence and stabilizing specific size ranges. This enables bulk fabrication processes to produce monodisperse particles with controlled morphology, bridging the gap between scalability and precision.
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
Enables the programmable self-assembly of hierarchical liquid compartments with precise control over phase transitions and surface interactions, facilitating the formation of diverse structures suitable for drug delivery, bioanalytical systems, and tissue engineering.
Implementation Method 1
stimulating a population of droplets including a solution of one or a mixture of components, wherein the stimulation induces a phase separation point of a first component
Implementation Method 2
the population of droplets are formed using one or a combination of mechanical agitation, sonication, or microfluidics
Implementation Method 3
stabilizing includes formation of cross-links by one or a combination of covalent coordination, ionic interaction, disulfide bonds, or hydrogen bonds
Data Source
AI summary
Nano- to microscale liquid coacervate particles are provided. The liquid coacervate particles are produced by a process including stimulating a population of liquid droplets containing one or a mixture of components to induce a phase separation point of a first component, and maintaining stimulation at the phase separation point to form a coacervate domain of the first component within each of the droplets to form the liquid coacervate particles. The self-assembled nano, meso, micro and macro liquid coacervate particles and related coated substrates can have utility in drug delivery, bioanalytical systems, controlled cell culture, tissue engineering, biomanufacturing and drug discovery.